Source: https://de.scribd.com/document/166673427/CCANZ-CP-01-2011
Timestamp: 2019-11-19 20:13:31
Document Index: 456896981

Matched Legal Cases: ['art 1', 'art 2', 'art 3', 'art 4', 'art 2', 'art 2', 'art 2', 'art 1', 'art 2', 'art 1', 'art 3']

CCANZ-CP 01 2011 | Wall | Masonry
speichernCCANZ-CP 01 2011 für später speichern
Approx Quants 2.docx
USAID_EmergencyShelterAssistanceInEarthquakeAffectedAreaOfBaghlanProvinceAfghanistan
PM-BOQ-WBSl
116 180802 1349484948 Pam Revised Ubbl Fire Reuirement Seminar Penang 2018
WeathertightConcreteandConcreteMasonryConstruction
CCANZCP01:2011
CodeofPracticeforWeathertight ConcreteandConcreteMasonryConstruction
Cement&ConcreteAssociationofNewZealand
Cement&ConcreteAssociationofNewZealand2011
CCANZ CP 01:2011
CCANZ CP 01:2011 - Code of Practice for Weathertight Concrete and Concrete Masonry Construction
Weathertightness solutions for: Concrete slab on ground, Concrete and concrete masonry wall systems, Concrete flat roofs and decks, and Concrete to timber construction junctions.
This Code of Practice (CCANZ CP 01:2011) has been developed by the Cement & Concrete Association of New Zealand, working in association with other industry groups, with the intention of being cited as a means of compliance with the New Zealand Building Code (NZBC) Clause E2 - External Moisture. It makes concrete easier to use for those wishing to benefit from its weathertight credentials. The Code of Practice covers the weathertightness of the building envelope for concrete slabs on ground, concrete walls (masonry, insitu and precast concrete) and associated methods of insulation (internal, external and integral), concrete flat roofs and decks, and concrete to timber construction junctions. Outbuildings such as detached garages are not covered by this Code of Practice. For ease of use, the format adopted for this document is similar to that used for NZBC Clause E2, Acceptable Solution 1 (E2/AS1). However, the detail drawings are considerably larger than the Figures in E2/AS1 and have accordingly been placed at the end of this document rather than embedded in the text.
This Code of Practice was prepared in 2011 by: Cement & Concrete Association of New Zealand With assistance of CCANZ CP 01 work group members: Bannan Construction Building Research Association of New Zealand Department of Building and Housing Firth Industries New Zealand Concrete Masonry Association Solid Concrete Solutions Sto New Zealand WILCO Precast Ltd. Wilton Joubert Civil Engineers, and Window Association of New Zealand. The contribution of time and expertise from all those involved is gratefully acknowledged. Cover image: Firth Showhome designed by David Ponting
The copyright of this document is the property of the Cement & Concrete Association of New Zealand (CCANZ). Published June 2011 by CCANZ, PO Box 448, Wellington 6140, New Zealand Phone 644 499 8820, fax 644 488 7760, website www.ccanz.org.nz
1.0.1 1.1.1 1.1.2 1.1.2.1 1.1.3 1.1.4 Interpretation Building type Walls Wall weathertightness systems Floors Roofs and decks Outbuildings Retaining walls Construction included
Construction excluded 1.2.1 1.2.2
Provisions for snow Qualifications
Specific design criteria for weathertightness Materials Maintenance 2.3.1 Regular maintenance
General 3.1.1 3.1.2 3.1.3 3.1.4 3.1.4.1 3.1.4.2 3.1.5 3.1.5.1 3.1.5.2 3.1.5.3 3.1.5.4 3.1.6 3.1.7 External seals Air seals Control joints Pipes and service penetrations Pipes and cables Service boxes Windows and doors Scope Weathertight treatment of openings Jamb/ head membrane Sill membrane Flashings Fixings Design criteria Materials Substrate finish Mortar joints Grouting
Concrete masonry wall construction 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5
3.2.6 3.2.7 3.2.7.1 3.2.7.2 3.2.7.3 3.2.8 3.2.8.1 3.2.8.2 3.2.8.3 3.2.9 3.2.9.1 3.2.9.2 3.2.9.3 3.2.9.4 3.2.9.5 3.2.9.6 3.2.9.7 3.2.9.8 3.2.9.9 3.3 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.3.5.1 3.3.5.2 3.3.5.3 3.3.6 3.3.6.1 3.3.6.2 3.3.6.3 3.3.7 3.3.7.1 3.3.7.2 3.3.7.3 3.4 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 3.4.5.1 3.4.5.2 3.4.5.3 3.4.5.4 Control joints
Construction type A1 & A3 - Concrete masonry wall construction - internal insulation and integral insulation Footing detail Wall details Roof details Construction type A2 - Concrete masonry wall construction - external insulation - EIFS Footing detail Wall details Roof details Construction type A4 -Masonry veneer on drained cavity concrete masonry wall construction Limitations General Installation Control joints Windows and doors Ground clearances, ventilation and drainage of veneer Footing detail Wall details Roof details Design criteria Materials Substrate finish Control joints Construction type B1 - Insitu concrete wall construction - internal insulation Footing detail Wall details Roof details Construction type B2 - Insitu concrete wall construction - external insulation - EIFS Footing detail Wall details Roof details Construction type B3 - Insitu concrete wall construction - integral insulation Footing detail Wall details Roof details Design criteria Materials Substrate finish Control joints Construction type C1 - Precast concrete wall construction - internal insulation Footing detail Wall details Roof details Precast panel to panel joints
Insitu concrete wall construction
3.4.6 3.4.6.1 3.4.6.2 3.4.6.3 3.4.7 3.4.7.1 3.4.7.2 3.4.7.3
Construction type C2 - Precast concrete wall construction external insulation - EIFS Footing detail Wall details Roof details Construction type C3 - Precast concrete wall construction integral insulation Footing detail Wall details Roof details
Wall weathertightness systems
EIFS system - external insulation 4.1.1 4.1.2 4.1.3 4.1.3.1 4.1.3.2 4.1.3.3 4.1.3.4 4.1.3.5 4.1.3.6 4.1.4 4.1.5 4.1.6 4.1.7 Limitations General Materials Polystyrene board Fibreglass reinforcing mesh Base coat plaster Finish coat Openings and penetrations Decorative mouldings Movement joints EIFS/floor slab junction Parapets and balustrades Fixings Plaster types Movement control joints Membrane for plaster Pigmented acrylic coating Pigmented elastomeric high build acrylic coating Permeability test Acceptable clear coating systems Apparent Volume of Permeable Voids (AVPV) test requirements
Plaster system 4.2.1 4.2.2 4.2.3
Pigmented coating system 4.3.1 4.3.2
Clear coating system 4.4.1 4.4.2
Watertight concrete 4.5.1
Required properties of flashing materials 5.1.1 5.1.2 5.1.3 5.1.4 Durability requirements Environmental requirements Specific conditions of use Surrounding materials
5.2.1 5.2.2 5.3 Fixings uPVC flashings Metallic flashings
Limitations Design criteria Substrate finish External roof insulation 6.4.1 6.5.1 6.5.2 Vapour control layer EPDM and butyl rubber roof membranes Bituminous roof membranes Roof membrane
Roof and deck drainage Additional deck requirements Control joints Junctions Penetrations 6.10.1 Parapets 6.11.1 6.11.2 Capping materials Metal cappings Handrails
Design criteria Wall footing details Finished floor level Damp-proof membranes (DPM) 7.4.1 Wall footings in poorly drained sites Protection of timber Control joints
Maximum acceptable moisture Measuring moisture content in concrete
1 2 3a 3b 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30a 30b 31 32 33 34a 34b
Wall/ Footing - Slab on Ground Wall/ Footing - Slab on Ground Wall/ Footing - Slab on Ground (Weathertightness 4.2, 4.3) Wall/ Footing - Slab on Ground (Weathertightness 4.4) Wall/ Footing - Slab on Ground Wall/ Footing - Slab on Ground Wall/ Footing - Slab on Ground Wall/ Upper Floor Slab Wall/ Upper Floor Slab Wall/ Upper Floor Slab Wall/ Upper Floor Slab Window - Head, Sill, Jamb Window - Head, Sill, Jamb Window - Head, Sill, Jamb Window - Head, Sill, Jamb Window - Head, Sill, Jamb Door/ Threshold at Deck Door/ Threshold at Deck Wall/ Pitched Roof - Apron Wall/ Pitched Roof - Apron Wall/ Pitched Roof - Apron Wall/ Pitched Roof - Apron Wall/ Pitched Roof - Eaves Wall/ Pitched Roof - Eaves Wall/ Pitched Roof - Eaves Wall/ Pitched Roof - Eaves Wall/ Pitched Roof - Verge Wall/ Pitched Roof - Verge Wall/ Pitched Roof - Verge Wall/ Pitched Roof - Verge Flat Roof, general built up Flat Roof, general built up Parapet with Profiled capping Parapet with integral capping, Option A Parapet with integral capping, Option B Parapet with Profiled capping, Option A Parapet with Profiled capping, Option B
masonry, insitu insitu, precast masonry masonry insitu, precast insitu, precast masonry masonry, insitu, precast masonry, insitu, precast insitu, precast masonry masonry, insitu, precast masonry wall insitu, precast insitu, precast masonry masonry, insitu, precast masonry, insitu, precast masonry, insitu, precast masonry, insitu, precast insitu, precast masonry masonry, insitu, precast masonry, insitu, precast insitu, precast masonry masonry, insitu, precast masonry, insitu, precast insitu, precast masonry internal external (EIFS) masonry, insitu, precast masonry, insitu, precast masonry, insitu, precast masonry, insitu, precast masonry, insitu, precast
external (EIFS) external (EIFS) internal, integral internal, integral internal integral cavity external (EIFS) internal integral cavity external (EIFS) internal, integral internal integral cavity external (EIFS) internal external (EIFS) internal integral cavity external (EIFS) internal integral cavity external (EIFS) internal integral cavity
external (EIFS) external (EIFS) external (EIFS) internal internal
Detail drawings (continued)
35 36a 36b 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57a 57b 58a 58b 59 60 61 62 63 64 65 66 67 68 69 70 Parapet of Insitu or Precast Wall Parapet with profiled capping, Option A Parapet with profiled capping, Option B Parapet with integral capping Parapet with Profiled capping Roof Gully Roof Gully Roof Exit, AOV Roof Exit, AOV Roof/ Deck at Wall Roof/ Deck at Wall Roof/ Deck at Wall Roof/ Deck at Wall Roof/ Deck at Wall Roof/ Deck at Wall Roof/ Deck at Wall Roof/ Deck at Wall Decking options Decking options Wall Penetration Wall Penetration Wall Penetration Wall Penetration Wall/ Service Box in EIFS Wall/ Service Box in EIFS Wall/ Service Box in internal insulation Wall/ Service Box in internal insulation Wall/ Service Box in integral insulation Wall/ Service Box in cavity wall Wall adj. other Wall Type, horizontal Wall adj. other Wall Type, horizontal Wall adj. other Wall Type, horizontal Wall adj. other Wall Type, horizontal Wall adj. other Wall Type, vertical Wall adj. other Wall Type, vertical Wall adj. other Wall Type, vertical Wall adj. other Wall Type, vertical a, b, c, d, e, f Mortar joints Control Joints general
insitu, precast insitu, precast insitu, precast insitu, precast masonry
internal integral integral integral cavity external (EIFS) Internal/ none external (EIFS) internal/ none
masonry, insitu, precast masonry, insitu, precast insitu, precast masonry masonry, insitu, precast masonry, insitu, precast insitu, precast masonry
ext. roof/ ext. wall ext. roof/ intn. wall ext. roof/ intg. wall ext. roof /cavity wall intn. roof/ ext. wall intn. roof/ intn. wall intn. roof/ intg. wall intn. roof /cavity wall external (EIFS) internal
masonry, insitu, precast masonry, insitu, precast insitu, precast masonry masonry insitu, precast masonry insitu, precast insitu, precast masonry masonry, insitu, precast masonry, insitu, precast insitu, precast masonry masonry, insitu, precast masonry, insitu, precast insitu, precast masonry masonry, insitu, precast
external (EIFS) internal integral cavity external (EIFS) external (EIFS) internal internal integral cavity external (EIFS) internal integral cavity external (EIFS) internal integral cavity
Table 1: Table 2: Table 3: Section references of acceptable wall weathertight systems Concrete masonry ground floor rebate requirement Acceptable weathertight plaster systems
1.1.2.1 3.2.7.2 4.2
Figure A: Vertical control joint 3.2.9.4
This Code of Practice is intended as a means of compliance with the New Zealand Building Code (NZBC) Clause E2 External Moisture. It covers the weathertightness of the building envelope for: Concrete slab on ground, Concrete and concrete masonry wall systems, Concrete flat roofs and decks, and Concrete to timber construction junctions.
COMMENT: Details of the junctions between concrete walls and timber walls, and of the junctions between concrete walls and timber roofs are provided in Section 3. Weathertightness details for timber roofs and timber walls are not covered by this Code of Practice. Weathertightness details for timber roofs can be found in NZBC E2/AS1.
1.0.1 Interpretation
Instructions or specifications that must be followed to achieve compliance with this Code of Practice are given in the main text of this document. Verbs such shall and require are used to help make this clear. Notes shown under 'COMMENT' throughout this document are for guidance purposes only and do not form part of mandatory requirements of this Code of Practice. Verbs such as "should", "may" and "recommend" are used to indicate that these are recommended practices or advice rather than compliance requirements.
The scope of this Code of Practice is limited to the materials, and processes contained herein, for buildings within the scope of section 1.1.1.
1.1.1 Building type
The building type shall be as per the following limitations: a) Buildings shall comply with importance levels 1 & 2 of AS/NZS 1170, b) Buildings shall be built on good ground as defined in NZS 4229, but with liquefaction and lateral spread added to the list of excluded ground, c) The building configuration shall comply with NZS 4229, 1.1.3 (e) but with a total maximum floor area of 1000m for single storey buildings, and d) The slope of the finished concrete roof and deck membrane shall be no less than 1.5.
1.1.2 Walls
This Code of Practice covers three types of concrete walls: A Concrete masonry construction as specified in section 3.2, B Insitu concrete construction as specified in section 3.3, and C Precast concrete construction as specified in section 3.4. Weathertightness requirements for walls shall be as specified in Table 1 and in section 4. This Code of Practice also provides weathertightness details for four alternative positions for the wall insulation: 1. On the inner face of the wall, or 2. On the outside face of the wall (EIFS systems), or 3. Integral within the wall itself, or 4. Within a ventilated cavity. Only the EIFS insulation forms part of the weathertightness system. Insulation in other positions (ie, internal, integral or cavity) is shown for illustrative purposes only and is not part of the weathertightness system. Thermal insulation is determined from the requirements of NZBC Clause H1 and Clause E3 which are outside the scope of this Code of Practice. The wall construction types shall be designated as: A1 - Concrete masonry - Internal insulation A2 - Concrete masonry - EIFS A3 - Concrete masonry - Integral insulation A4 - Concrete masonry - Masonry veneer B1 - Insitu concrete - Internal insulation B2 - Insitu concrete - EIFS B3 - Insitu concrete - Integral insulation C1 - Precast concrete - Internal insulation C2 - Precast concrete EIFS, and C3 - Precast concrete - Integral insulation. Junction details for these wall construction types shall be as specified in section 3 for: a) Concrete walls to flat concrete roofs/ decks, b) Concrete walls to concrete slab on ground, c) Openings and penetrations in concrete walls, d) Concrete walls to timber walls, and e) Concrete walls to timber roofs.
COMMENT: Junction details for concrete slab on ground to timber walls are given in NZBC E2/AS1.
CCANZ 01:2011 CCANZ CP CP 01:2011
1.1.2.1 Wall weathertightness systems
Exterior finishes for wall construction types as specified in section 1.1.2 shall be as shown in Table 1.
Section references of acceptable wall weathertightness systems Plaster Systems Polymer Polymer based modified Plaster Cement Plaster 3 coat Solid Plaster Masonry Veneer1 Coating Systems Pigmented Pigmented Clear Standard or Acrylic Coating2 Elastomeric (80m) high build Acrylic (180m)
A1/ A3
Weathertightness EIFS System
Watertight Concrete3
B1/ B3
C1/ C3
KEY TO TABLE: 1. Masonry veneer on concrete masonry construction requires a clear cavity of at least 40 mm. 2. Acceptability of clear coatings is specified in section 4.4.2. 3. Watertight concrete, as specified in section 4.5, will meet NZBC Clause E2 without the need for a coating. 4. n/a stands for not acceptable. EDITORS COMMENT: The wording Standard or has been included into the CP-01, Table 1 with amendment of 15 Nov 2012.
1.1.3 Floors
The scope of this Code of Practice limits floors to those that are concrete slabs on ground. Footings and foundation walls and concrete slabs on ground shall comply with NZS 4229 Sections 6 and 7, or be specifically designed by a chartered professional structural engineer. Weathertightness details for slabs on ground and footings shall be as specified in section 7.
COMMENT: Suspended floors do not influence the weathertightness system, provided the external wall surface is continuous.
1.1.4 Roofs and decks
The scope of this Code of Practice limits concrete flat roofs and decks to those specified in section 6. Concrete roofs and decks shall be designed in accordance with AS/NZS 1170 and NZS 3101 and constructed in accordance with NZS 3109. Weathertightness details shall be as specified in section 6.0. Openings and penetrations through concrete roofs (roof exits, gullies) shall be completed in accordance with section 6.10. NZBC E2/AS1 provides weathertight details for timber roof constructions. These can be used with the wall construction covered by this Code of Practice. Roof junction details at the eaves and verge connections to concrete walls are specified in section 3.0.
Further limitations which are specific to construction systems are given in the relevant sections that follow.
Outbuildings, such as detached garages, are outside the scope of this Code of Practice.
COMMENT: An attached garage that is integral within the weathertightness envelope of the building is included within the scope of this Code of Practice. While details contained in this Code of Practice may be used for outbuildings, the requirements may be in excess of the minimum required by the New Zealand Building Code.
Retaining walls, including those used in a basement, are not covered in this Code of Practice.
COMMENT: Such walls are subject to a solution based on NZS 4229 or to specific design.
This Code of Practice does not allow for excessive build-up of snow melt water when the open ground snow load Sg, as defined in AS/NZS 1170, exceeds 1.0 kPa.
COMMENT: Such a situation requires specific design. Hidden gutters, parapets and skylights are examples of features within a roof design that are likely to cause a build-up of snow.
COMMENT: An understanding of the proper methods of design and installation and the importance of the correct construction sequence is essential if an NZBC-compliant building is to be achieved. Adequate training of those installing particular products and claddings is therefore highly recommended. The design, installation and alteration of claddings will be 'restricted building work' under the licensed building practitioners scheme, due to take effect in 2012. Until then, the use of licensed designers, builders and installers is optional. It is important that product suppliers, manufacturers and New Zealand agents (for imported products) ensure that those handling and applying their products be adequately qualified to do so, and that site managers oversee the correct integration of adjoining building elements to achieve a complete weathertight system.
Specific design criteria for weathertightness
Concrete requires weathertight protection comprising either an EIFS, a plaster system, a coating system, a veneer, membranes or to be made of watertight concrete. Concrete shall be designed to prevent cracking in service in accordance with NZS 3101 Part 1 section 2.4.4.1(c) and section 2.4.4.8 and NZS 3101 Part 2 section C2.4.4.
COMMENT: Weathertightness issues will involve not only the concrete and concrete masonry system itself, but also joints and connections with other cladding materials. Acceptable details are shown in this Code of Practice. However, where specialist fixings and flashings form part of the weathertightness envelope, these need supporting documentation or testing to demonstrate compliance with NZBC E2.
Materials used to construct the building envelope shall: a) For concrete and concrete masonry, comply with the durability provisions of NZS 3101 and NZS 4210 respectively, and b) Comply with NZBC E2/AS1 Table 20 in respect of their end use, location and environment, and comply with NZBC E2/AS1 Tables 21 and 22 in respect of their compatibility with adjoining materials. c) All materials must comply with NZBC B2.
Maintenance shall be carried out as necessary to achieve the required durability of materials, connections, flashings and other components; particularly at junctions.
COMMENT: Concrete and plaster are generally regarded as long-life materials traditionally requiring less maintenance than other cladding materials. Nevertheless, regular inspection and maintenance of associated flashings and fixings, weathertight coatings and waterproof membranes needs to be carried out.
2.3.1 Regular maintenance
Regular maintenance of a building shall entail: a) Washing exterior surfaces to remove dirt and mould at least once in a year, b) Inspecting surfaces and junctions at least once in a year, and repairing or replacing items as necessary, c) Repairing cracks and surface defects, and recoating as necessary, d) Inspecting sealants annually for loss of integrity or adhesion with the joint surfaces and replacing sealants as necessary, e) Maintaining paint coatings by recoating at least every 10 years, f) Inspecting clear sealers annually and recoating, if necessary, but at least every 5 years,and g) Maintaining required clearances (as shown in the details in section 9) between wall claddings and: i) ground surface, ii) paving surface, iii) deck membranes, and iv) roof membranes.
COMMENT: The frequency of regular maintenance depends on the degree of exposure and the robustness of the building facade system including the integrity of any coating. The maintenance interval for concrete or concrete masonry systems can range from three months to one year. Washing by rain removes most accumulated atmospheric contaminants, but sheltered areas, such as walls directly below eaves, are protected from the direct effects of rain and require regular manual washing. Some heavily textured surfaces will not be as effectively washed by rain as smoother surfaces, so may require more regular manual washing. However, it is important that high pressure water is not directed at sensitive junctions such as joinery, window surrounds and flashings. Great care should be taken to avoid water being driven into joints and potentially dislodging seals. The repair of cracks to concrete and plaster may require specialist advice to ascertain the cause of cracking and the appropriate repair methodology.
This Code of Practice is subject to the limitations of section 1.1.2. Wall construction shall comply with the provisions of sections 3.1.1 to 3.1.10 and, depending on the wall type, either 3.2 or 3.3 or 3.4. Insitu and precast concrete walls require weathertight protection comprising either an EIFS, a plaster system, a coating system or to be made of watertight concrete. Concrete masonry walls require weathertight protection comprising an EIFS, a plaster system, a coating system or a masonry veneer. A weathertightness system as specified in section 4 shall be used, subject to the limitations of section 1.1.2.1. The external wall shall be inspected (eg, visual and touch tests) to ensure concrete surfaces are clean and free of contaminants, eg curing agents, before applying the weathertightness system.
COMMENT: The Detail drawings show alternative positions for insulation, which reflects the different details used in the industry. Only EIFS insulation forms part of the weathertightness system and must be used as specified in section 4.1. Insulation in other positions (i.e. internal, integral or cavity) is show for illustrative purposes only and is not part of the weathertightness system. The details and associated materials common to all systems which contribute to weathertight performance of the cladding system as a whole are given. Specific floor, wall, window, door, and roof details are also given for each of the three wall construction types.
3.1.1 External seals
COMMENT: Sealants have an important role in preventing moisture ingress at joints and wall penetrations and openings.
External seals shall have a 2:1 width to depth ratio and shall be: a) Type F, Class 20LM or 25LM of ISO 11600, or b) Low modulus Type II Class A of Federal Specification TT-S-00230C. The sealant shall be chosen based on: i) Suitability for the particular application and environmental exposure, ii) The differential movement in the adjoining materials under the extremes of thermal and moisture movement, and iii) Compatibility with adjacent materials to which it adheres.
COMMENT: There are a number of generic types of sealant, and advice should be sought from the manufacturer on the best type for a particular application. Some sealant types such as acid-cure silicones are not suitable for cement- based alkaline substrates. Sealants also function as a flexible gap filler for flashings and joinery. As sealants have a limited life (typically 20 years maximum) good joint detailing allowing free drainage to the exterior, for instance, will provide some additional back-up protection against water entry.
There shall be no internal air pockets or gaps in the sealant and it shall contact both sides of the joint. The contact surfaces shall be free of contaminates. PEF backing rods complying with ASTM C1330 are required in addition where specified in the Details in section 9.
3.1.2 Air seals
Window, door and service penetrations through walls shall be provided with flexible water resistant air seals to minimise the risk of airflows carrying water into the building wall. The air seal shall be: a) Provided between the concrete or concrete masonry opening and the reveal or window frame, b) Installed over a closed cell polyethylene foam (PEF) backing rod complying with ASTM C1330, and c) Made of: i) self-expanding polyurethane foam, or ii) sealant complying with: a. Type F, Class 20LM or 25LM of ISO 11600, or b. Low modulus Type II Class A of Federal Specification TT-S-00230C.
COMMENT: Care should be taken when using self-expanding polyurethane foam as there is a danger of over-filling due to the foam expanding up to 20 times its original volume.
3.1.3 Control joints
This Code of Practice does not allow for horizontal control joints, except for a precast construction joint at eaves level on a gable end, as shown in Detail 69d, and with no vertical joint above draining into this horizontal joint. Vertical control joints shall be provided at a maximum 6 metre centres for all construction types. Control joints shall be positioned and designed to accommodate differential movements in the substrate whilst ensuring that the wall remains weathertight. Joints in the substrate shall be reflected through into the EIFS, plaster or coating. Control joints shall be detailed as shown in Details 69a to 69f. Junction Details 18 to 29 and 61 to 68 shall be used where concrete or concrete masonry abuts light-weight construction (i.e. timber frame or steel frame).
3.1.4 Pipes and service penetrations
3.1.4.1 Pipes and cables
Pipes and service penetrations shall be made weathertight by using a sealant on the exterior and interior that is either: a) Type F, Class 20LM or 25LM of ISO 11600, or b) Low modulus Type II Class A of Federal Specification TT-S-00230C. Pipes shall slope down to the exterior to facilitate drainage to the outside. Details for flashing pipe services shall be as shown in Details 53 to 56. Where cables penetrate the weathertightness system, a sleeve or conduit shall be provided and all wires that pass through a conduit shall be sealed into position inside the conduit.
COMMENT: Service penetrations through the wall should be kept to a minimum. Where practical, service pipes should be taken through the floor.
3.1.4.2 Service boxes
Details for installation of a service box, e.g. a meter box, shall be as shown in Details 57 to 60. A waterproof membrane as specified in section 3.1.5.3 shall be applied around the head, the jambs and the back of the wall setout.
A waterproof membrane as specified in section 3.1.5.4 shall be applied across the entire sill and shall be extended up the jambs and the back of the setout for at least 40mm.
COMMENT: Waterproofing the sides of service box openings is important as service boxes cannot be assumed to be waterproof.
3.1.5 Windows and doors
Windows and doors shall comply with the requirements of NZS 4211. Window and door openings shall be made weathertight with a waterproof membrane bonded to the concrete before installation. For concrete masonry construction, rebated blocks for heads and jambs and rebated sloped sill blocks for windows shall be used. Window details specific to particular wall constructions shall be as given in Details 11 to 15. Door details shall be as given in Details 16 and 17. Windows shall be mechanically fixed. After installation, the flange forming the window or door facing shall have a minimum 10mm overlap over the surrounding weathertightness system. However, a minimum of 8 mm effective overlap on the sill shall be permitted where necessary to allow for on-site tolerances. Windows and door openings shall: a) Deflect water away from the window/ door to wall joint by overhangs and drip edges in plaster or mouldings, b) Allow any water that does get into the window/ door frame to drain back out, generally through the open sill joint along the bottom edge, c) Allow air through this unsealed joint to aid drying and equalise air pressures thus minimising water entry, and d) Be provided with air seals on the inside edges of openings to restrict the passage of moist air through joints.
3.1.5.1 Scope
This Code of Practice limits windows and doors to: a) Windows that are fixed hinged (i.e. hinges are fixed to an immovable frame, as compared to a bifold or sliding window) or stayed and that have frame sizes of no more than 5000 mm x 5000 mm, and b) Doors that are fixed hinged and that have frame sizes of no more than 5000 mm x 5000 mm.
COMMENT: Certain aluminium joinery sections (bi-fold and sliding doors and windows) will not be able to use the sill details included in this Code of Practice and achieve the required window facing cover and sill support with a sill tray. The sill details in these cases should be subject to specific design.
3.1.5.2 Weathertight treatment of openings
A waterproof membrane as specified in section 3.1.5.3 shall be applied around the head and the jambs of the window opening as shown in Details 11 to 15. A waterproof membrane as specified in section 3.1.5.4 shall be applied across the entire sill and shall be extended up the jambs for at least 40mm.
COMMENT: The waterproof membrane and weatherproof coatings carry out a critical role in preventing the entry of moisture through the opening into the building.
3.1.5.3 Jamb/ head membrane
The head and jambs membrane shall consist of a liquid membrane that complies with AS/NZS 4858. Bituminous coatings shall not be used around windows as they inhibit the adhesion to concrete.
3.1.5.4 Sill membrane
The sill membrane shall consist either of: a) A liquid membrane that complies with AS/NZS 4858, or b) A bonded sheet membrane that complies with AS/NZS 4858, or c) A flashing tape which complies with ICBO Acceptance Criteria AC148 sections 3.2 and 4, which is compatible with the concrete substrate and finish, and which is applied to primed concrete surfaces, or d) A damp-proof course (DPC). Sills shall be made weathertight by applying the sill membrane continuously across the concrete sill for the entire opening width of the window. Bituminous coatings shall not be used around windows as they inhibit the adhesion to concrete.
3.1.6 Flashings
Flashings shall comply with section 5.0. Profiled metal roof flashings shall be provided at the apron on a sloped roof as shown in Details 18 to 21 and shall run up beneath the metal over-flashing or compression seal. Over-flashings shall be chased and sealed into the wall with a sealant complying with section 3.1.1.
COMMENT: A metal capping may be used to cap a parapet (see Details 31, 34a & b, 36a & b and 38) and should be clipped to a proprietary metal bracket.
3.1.7 Fixings
The attachment of fixings shall be designed so as not to compromise the integrity of the weathertightness system. Attachment of fixings into horizontal or inclined surfaces shall be avoided. The use of a metal over-flashing will provide additional weathertightness protection as shown in Detail 35.
3.2 Concrete masonry wall construction
3.2.1 Design criteria
Concrete masonry walls shall be fully or partially filled, including concrete masonry veneer walls. Concrete masonry walls, including concrete masonry veneer walls, shall comply with NZS 4229 and NZS 4210. Cover requirements for reinforcement shall be as specified in NZS 4210 Appendix 2E.
Concrete masonry materials including blocks, grout and mortar shall comply with NZS 4210 and AS/NZS 4455.
3.2.3 Substrate finish
All maximum tolerances shall be in strict accordance with NZS 4210, 2.7.1.4 Table 2.2: i.e. no more than 3 mm surface alignment deviation over a 1200 mm radius. The interstorey floors should be poured within the block structure, leaving the outer block shell continuous (i.e. over the concrete slab edge) to avoid cracking in the exterior face of the wall. The moisture content of the wall including joints shall be below 70% relative humidity before applying the weathertight system.
COMMENT: The concrete block installation, including reinforcement and concrete infill, must follow the project specifications and the block manufacturers technical data. In particular, the blocks must be laid true in both vertical and horizontal planes with all joinery and service openings correctly formed and waterproofed.
3.2.4 Mortar joints
COMMENT: The mortar quality and workmanship are important to the weathertight performance of concrete masonry.
Mortar depth of horizontal and vertical joints shall be the full thickness of the face shell.
COMMENT: Face shell describes the thickness of the shell of the masonry block.
Mortar shall meet the requirements of NZS 4210 and shall achieve a compressive strength of 12.5 MPa. Mortar joints shall be compressed by tooling in accordance with NZS 4210 and Detail 70. The mortar joint shall be tooled after the initial water loss, once the mortar is thumbnail hard. The depth of the vertical mortar joint shall match that of the horizontal joints.
COMMENT: Flush joints may be used where plaster or EIFS is to be applied to the concrete masonry, but they should still be tooled first.
3.2.5 Grouting
The masonry block cells and cavities shall be cleaned to remove mortar droppings and debris from the joints before grouting. Grouting shall comply with the requirements of NZS 4210. Grout filling shall be in accordance with NZS 4210 clause 2.11.6 (b) using one of the three methods described.
COMMENT: NZS 4210 requires the grout to have a spread of 450 mm to 530 mm and a minimum specified strength of either: a) 25MPa at 28 days for buildings located in the NZS 3604 Zone D, or b) 17.5MPa at 28 days in all other cases.
3.2.6 Control joints
COMMENT: Typical control joints are shown in Detail 69a & b. The use of horizontal control joints is outside the scope of this Code of Practice.
Vertical control joints in concrete masonry shall be placed at a maximum of 6 metre centres in accordance with NZS 4229 section 13.1.1. Apart from bond beam and lintel reinforcement, horizontal reinforcement shall be discontinuous across the control joint, with a short length of de-bonded steel placed across the joint as shown in NZS 4229 Figure 13.2. Vertical control joints shall also be provided at: a) Changes in wall height exceeding 600 mm, b) Wall intersections, and c) At one side of all wall openings. Cells on either side of control joints shall be fully grouted and reinforced in accordance with NZS 4210 and NZS 4229.
3.2.7 Construction type A1 and A3 - Concrete masonry wall construction - internal insulation and integral insulation
Details in sections 3.2.7.1 to 3.2.7.3 shall be used for concrete masonry wall construction types A1 and A3.
COMMENT: The details referred to in the following text have been drawn based on concrete masonry wall construction with internal insulation. The details for concrete masonry wall construction with integral insulation are similar except that the position of the insulation is moved into the masonry block wall.
3.2.7.1 Footing detail
Footings shall be constructed as shown in Details 3a & 3b: Wall/ Footing Junction - Slab on ground. These details include a 45 mm - 100 mm deep rebate (100 mm represents a half-block height) below finished floor concrete slab level to take the base block of the wall. Rebates shall be provided as specified in Table 2.
COMMENT: The inclusion of a rebate is as an additional weatherproofing measure to reduce the risk of water entry to floor level.
CCANZ 01:2011 CCANZ CPCP 01:2011
Concrete Masonry Ground Floor Rebate Requirement Concrete Masonry Weathertightness System: Pigmented Standard or Elastomeric high build acrylic (180m) (4.3.2)
EIFS (4.1)
Plaster systems (4.2)
Clear Sealer (4.4)
Residential fully filled block wall partially filled block wall NR NR NR R NR R R R
KEY TO TABLE: R = Rebate required, NR = No rebate required COMMENT: It is acceptable to provide a rebate also where Table 2 says NR: it is just not mandatory. EDITORS COMMENT: The wording Standard or has been included into the CP-01, Table 2 with amendment of 15 Nov 2012.
3.2.7.2 Wall details
Detail 8 Detail 12 Details 44, 48 Detail 54 Detail 58a Detail 62 Detail 66 Detail 70 Masonry Wall/ Upper Floor Slab Junction Window - Head, Sill, Jamb Roof/Deck at Wall Junction Wall Penetration Wall/ Service Box Masonry Wall adjoining other Wall Type Masonry Wall/ Timber Wall Upper Floor Junction Mortar Joints
3.2.7.3 Roof details
Detail 19 Detail 23 Detail 27 Details 34a & b Wall/ Pitched Roof - Apron Junction Wall/ Pitched Roof - Eaves Junction Wall/ Pitched Roof - Verge Detail Parapet
3.2.8 Construction type A2 - Concrete masonry wall construction - external insulation - EIFS
Details in sections 3.2.8.1 to 3.2.8.3 shall be used for concrete masonry wall construction type A2.
COMMENT: A description of EIFS is given in section 4.1.
Wall/ Footing Junction - Slab on Ground
3.2.8.2 Wall details
Detail 7 Detail 11 Details 43, 47 Detail 53 Detail 57a Detail 61 Detail 65 Wall/ Upper Floor Slab Junction Window - Head, Sill, Jamb Roof/ Deck at Wall Junction Wall Penetration Wall/ Service Box Masonry Wall adjoining other Wall Type Masonry Wall/ Timber Wall Upper Floor Junction
3.2.8.3 Roof details
Detail 18 Detail 22 Detail 26 Details 31, 32, 33 Wall/ Pitched Roof - Apron Junction Wall/ Pitched Roof - Eaves Junction Wall/ Pitched Roof - Verge Junction Parapet
3.2.9 Construction type A4 - Masonry veneer on drained cavity concrete masonry wall construction
Details in sections 3.2.9.7 to 3.2.9.9 shall be used for concrete masonry wall construction type A4.
3.2.9.1 Limitations
This Code of Practice limits veneer construction to: a) Concrete or clay brick veneer tied to concrete masonry construction with a minimum clear ventilated cavity of 40 mm, or b) Concrete block veneer tied to concrete masonry construction with a minimum clear ventilated cavity of 40 mm.
COMMENT: The use of natural stone bricks or blocks as a masonry veneer is outside the scope of this Code of Practice and may require specific design.
Masonry veneer construction with a minimum 40 mm clear ventilated cavity is deemed to be weathertight. Insulation used in a drained cavity shall resist absorbing moisture. The water absorption, measured in accordance with ASTM D2842, shall be equal to or less than 2.5% by volume.
COMMENT: Brick or block-layers recognised under the licensed building practitioners scheme are recommended for the installation of masonry veneer.
3.2.9.3 Installation
Masonry veneer on concrete masonry, of the types specified in section 3.2.9.1, shall be deemed to comply with this Code of Practice if: a) The installation complies with SNZ HB 4236 and NZS 4229, b) The masonry veneer cavity is ventilated and drained from the bottom as detailed in SNZ HB 4236, and c) Control joints are included in accordance with section 3.2.9.4.
3.2.9.4 Control joints
Control joints shall be formed as shown in Figure A and using an external seal as specified in section 3.1.1. Control joints in clay brick veneers shall be included at locations specified by the brick manufacturer. Control joints in concrete brick veneers shall be included as specified in the New Zealand Concrete Masonry Manual and in any other locations specified by the manufacturer.
COMMENT: Cracks are cosmetic and not likely to cause a moisture problem because of the presence of the cavity. Manufacturers can provide additional information on control joints.
3.2.9.5 Windows and doors
Window details for masonry veneer shall be constructed as shown in Detail 15. Openings shall be as specified in section 3.1.5.2.
3.2.9.6 Ground clearances, ventilation and drainage of veneer
Clearances to ground levels at the bottom of masonry veneer shall be in accordance with Detail 6. Vents shall be installed at the top, and drain holes provided at 1000 mm /m through the bottom bed joint of the masonry veneer in accordance with SNZ HB 4236 and NZS 3604.
3.2.9.7 Footing detail
Detail 6 Masonry Veneer Wall/ Footing Junction - Slab on ground
3.2.9.8 Wall details
Detail 10 Detail 15 Details 46, 50 Detail 56 Detail 60 Detail 64 Detail 68 Masonry Veneer Wall/ Upper Floor Slab Window - Head, Sill, Jamb Roof/ Deck at Masonry Veneer Wall Junction Masonry Veneer Wall Penetration Wall/ Service Box Masonry Veneer Wall adjoining other Wall Type Masonry Veneer Wall/ Timber Wall Upper Floor Junction
Masonry Veneer Wall/ Pitched Roof - Apron Junction Masonry Veneer Wall/ Pitched Roof - Eaves Junction Masonry Veneer Wall/ Pitched Roof - Verge Junction Parapet
3.2.9.9 Roof details
Detail 21 Detail 25 Detail 29 Detail 38
3.3 Insitu concrete wall construction
3.3.1 Design criteria
Insitu concrete construction shall be designed in accordance with AS/NZS 1170, NZS 3101 and section 2.1 of this Code of Practice, and constructed in accordance with NZS 3109.
All concrete shall be produced in accordance with NZS 3104. Concrete supply shall: a) For watertight concrete, comply with NZS 3104 for 'special concrete' and shall have a specified 28 day concrete strength of 50 MPa and meet the performance requirement for watertightness, and b) For all other concrete, comply with NZS 3104 for 'normal concrete' and shall have a minimum specified 28 day concrete strength of 25 MPa. Concrete shall either be certified by the New Zealand Ready Mixed Concrete Association (NZRMCA) Plant Audit Scheme or by a Chartered Professional Engineer confirming the concrete complies with NZS 3104. Reinforcement shall comply with AS/NZS 4671. The reinforcement cover shall comply with NZS 3101 section 3 to meet NZBC B2 durability provisions.
3.3.3 Substrate finish
The exterior face of the concrete wall shall: a) For EIFS and plaster systems as specified in sections 4.1 and 4.2, be finished to a minimum F4 standard in accordance with NZS 3114, and b) For coating and clear sealer systems as specified in sections 4.3 and 4.4, be finished to a minimum F5 standard in accordance with NZS 3114. At least 28 days shall be allowed after concrete placement as per AS/NZS 2311 for curing and stabilisation to take place before commencing the weathertight system. The moisture content of the wall shall be below 70% relative humidity before applying the weathertight system. The substrate design needs to detail adequate reinforcement to prevent cracking in service.
COMMENT: Particular attention should be paid to vibration and curing in and around edges of the wall. A comprehensive reference guide, New Zealand Guide to Concrete Construction, is available from www.ccanz.org.nz. It is important that all insitu concrete work has close quality control.
3.3.4 Control joints
Vertical control joints shall be placed at a maximum of 6 metre centres as shown in Details 69e & 69f.
3.3.5 Construction type B1 - Insitu concrete wall construction - internal insulation
Details in sections 3.3.5.1 to 3.3.5.3 shall be used for insitu concrete wall construction type B1.
3.3.5.1 Footing detail
Detail 4 Wall/ Footing Junction - Slab on ground
3.3.5.2 Wall details
Detail 8 Detail 13 Details 44, 48 Detail 54 Detail 58b Detail 62 Detail 66 Wall/ Upper Floor Slab Window - Head, Sill, Jamb Roof/Deck at Wall Junction Wall Penetration Wall/ Service Box Concrete Wall adjoining other Wall Type Concrete Wall/Timber Wall Upper Floor Junction
3.3.5.3 Roof details
Detail 19 Detail 23 Detail 27 Details 34a & b, 35 Wall/ Pitched Roof - Apron Junction Wall/ Pitched Roof - Eaves Junction Wall/ Pitched Roof - Verge Junction Parapet
3.3.6 Construction type B2 - Insitu concrete wall construction - external insulation - EIFS
Details in sections 3.3.6.1 to 3.3.6.3 shall be used for insitu concrete wall construction type B2.
3.3.6.1 Footing detail
Detail 1 and 2 Wall/ Footing Junction - Slab on ground
3.3.6.2 Wall details
Detail 7 Detail 11 Details 43, 47 Detail 53 Detail 57b Detail 61 Detail 65 Wall/ Upper Floor Slab Junction Window - Head, Sill, Jamb Roof/ Deck at Wall Junction Wall Penetration Wall/ Service Box Concrete Wall adjoining other Wall junction Concrete Wall/ Timber Wall Upper Floor Junction
3.3.6.3 Roof details
3.3.7 Construction type B3 - Insitu concrete wall construction - integral insulation
Details in sections 3.3.7.1 to 3.3.7.3 shall be used for insitu concrete wall construction type B3.
3.3.7.1 Footing detail
Detail 5 Wall/ Footing Junction - Slab on ground
3.3.7.2 Wall details
Detail 9 Detail 14 Details 45, 49 Detail 55 Detail 59 Detail 63 Detail 67 Wall/ Upper Floor Slab Junction Window - Head, Sill, Jamb Roof/Deck at Wall Junction Wall Penetration Concrete Wall/ Service Box Concrete Wall adjoining other Wall Type Concrete Wall/ Timber Wall Upper Floor Junction
3.3.7.3 Roof details
Detail 20 Detail 24 Detail 28 Details 36a &b, 37 Wall/ Pitched Roof - Apron Junction Wall/ Pitched Roof - Eaves Junction Wall/ Pitched Roof - Verge Junction Parapet
3.4 Precast concrete wall construction
COMMENT: Panels with integral insulation may also be called composite panel construction or sandwich panel construction.
3.4.1 Design criteria
Precast concrete walls shall be designed in accordance with AS/NZS 1170, NZS 3101 and section 2.1 of this Code of Practice, and constructed in accordance with NZS 3109. Tilt up construction shall be designed and constructed in accordance with the CCANZ Tilt Up Technical Manual TM 34.
COMMENT: The construction of concrete walls to provide weathertightness requires close quality control. Particular attention should be paid to vibration and curing in and around edges of the panel, to ensure that the joints are sound for adherence of the sealant.
All concrete shall be produced in accordance with NZS 3104. Concrete supply shall: a) For watertight concrete, comply with NZS 3104 for 'special concrete' and shall have a specified 28 day concrete strength of 50 MPa and meet the performance requirement for watertightness, and b) For all other concrete, comply with NZS 3104 for 'normal concrete' and shall have a minimum specified 28 day concrete strength of 25 MPa. Concrete shall either be certified by the New Zealand Ready Mixed Concrete Association (NZRMCA) Plant Audit Scheme or by a Chartered Professional Engineer confirming the concrete complies with NZS 3104. Reinforcement shall comply with AS/NZS 4671.The reinforcement cover shall comply NZS 3101 section 3 to meet NZBC B2 durability provisions.
3.4.3 Substrate finish
The exterior face of the concrete wall shall: a) For EIFS and plaster systems as specified in sections 4.1 and 4.2, be finished to a minimum F4 standard in accordance with NZS 3114, and b) For coating and clear sealer systems as specified in sections 4.3 and 4.4, be finished to a minimum F5 standard in accordance with NZS 3114. At least 28 days shall be allowed after concrete placement as per AS/NZS 2311 for curing and stabilization to take place before commencing the weathertight system. The moisture content of the wall shall be below 70% relative humidity before applying the weathertight system. The substrate design needs to detail adequate reinforcement to prevent cracking in service.
3.4.4 Control joints
Control joints shall be placed at a maximum of 6 metre centres as shown in Details 69a, c & d.
3.4.5 Construction type C1 - Precast concrete wall construction - internal insulation
Details in sections 3.4.4.1 to 3.4.4.3 shall be used for precast concrete wall construction type C1.
3.4.5.1 Footing detail
3.4.5.2 Wall details
Detail 8 Detail 13 Detail 44 Detail 54 Detail 58b Detail 62 Detail 66 Wall/ Upper Floor Slab Junction Window - Head, Sill, Jamb Roof/ Deck at Wall Junction Wall Penetration Wall/ Service Box Concrete Wall adjoining other Wall Type Concrete Wall/ Timber Wall Upper Floor Junction
Wall/ Pitched Roof - Apron Junction Wall/ Pitched Roof - Eaves junction Wall/ Pitched Roof - Verge Junction Parapet
3.4.5.3 Roof details
Detail 19 Detail 23 Detail 27 Details 34a &b, 35
3.4.5.4 Precast panel to panel joints
Detail 69b Detail 69c Detail 69d Vertical control joint; plastered wall, horizontal section Vertical control joint; precast wall, horizontal section Horizontal panel joint; precast wall, vertical section
3.4.6 Construction type C2 - Precast concrete wall construction - external insulation - EIFS
Details in sections 3.4.5.1 to 3.4.5.3 shall be used for precast concrete wall construction type C2.
3.4.6.1 Footing detail
Detail 2 Wall/ Footing Junction - Slab on ground
3.4.6.2 Wall details
Detail 7 Detail 11 Details 43, 47 Detail 53 Detail 57b Detail 61 Detail 65 Wall/ Upper Floor Slab Junction Window - Head, Sill, Jamb Roof/ Deck at Wall Junction Wall Penetration Wall/ Service Box Concrete Wall adjoining other Wall Type Wall/ Timber Wall Upper Floor Junction
3.4.6.3 Roof details
3.4.7 Construction type C3 - Precast concrete wall construction - integral insulation
Details in sections 3.4.6.1 to 3.4.6.3 shall be used for precast concrete wall construction type C3.
3.4.7.1 Footing detail
Wall/ Upper Floor Slab Window - Head, Sill, Jamb Roof/ Deck at Wall Junction Wall Penetration Wall/ Service Box Wall adjoining other Wall Type Wall/ Timber Wall Upper Floor Junction
3.4.7.2 Wall details
Detail 9 Detail 14 Details 45, 49 Detail 55 Detail 59 Detail 63 Detail 67 -
3.4.7.3 Roof details
This section provides specifications for the following five weathertightness systems: 1. EIFS (Exterior Insulation and Finish System) (see section 4.1), 2. Plaster system (see section 4.2), 3. Pigmented coating system (see section 4.3), 4. Clear coating system (see section 4.4), and 5. Watertight concrete (see section 4.5).
4.1 EIFS system external insulation
This section specifies Exterior Insulation and Finish Systems (EIFS) applied directly to either: a) A Concrete Masonry Wall type A2, or b) An Insitu Concrete Wall type B2, or c) A Precast Concrete Wall type C2.
EIFS shall be: a) Designed and tested as a total system, to meet NZBC E2, b) Supplied by a single supplier who takes responsibility for the system as a whole encompassing the durability, weathertight detailing and overall weathertightness, and c) Not fixed: i) so as to form a horizontal surface, or ii) in such a way as to allow water to pond.
COMMENT: It is recommended that installation and finishing of EIFS is carried out by trained applicators who are approved by the New Zealand supplier of the system.
EIFS shall comprise: a) A polystyrene rigid insulation board, b) A polymer-modified cement-based base plaster or a polymer-based base plaster, reinforced with fibreglass mesh, and c) A polymer-modified cement finishing plaster system or polymer-based finishing plaster system in one or more coats.
4.1.3.1 Polystyrene board
Polystyrene boards shall be either: a) Expanded polystyrene (EPS) complying with AS 1366: Part 3, Class H or Class S, or b) Extruded polystyrene (XPS) that complies with AS 1366: Part 4.
COMMENT: The minimum board thickness will be determined by structural and thermal requirements. For some EIFS, polystyrene boards are available with the base coat plaster factory-applied.
The polystyrene boards shall be mechanically fixed at no greater than 600 mm centres and adhered to the wall using a cement-based mineral adhesive coat, tested for bond strength between polystyrene and concrete or masonry substrate, in accordance with ASTM E2134-01(2006). The concrete or masonry wall shall be free of contaminates prior to application of the adhesive.
4.1.3.2 Fibreglass reinforcing mesh
The entire exterior surface of the polystyrene sheet (including corners) shall be continuously reinforced with an alkaliresistant fibreglass mesh, which shall: 2 a) Weigh no less than 150 grams per m , b) Have an aperture size from a minimum 3 mm x 3 mm to a maximum of 6 mm x 6 mm square, c) Comply with the requirements of EIMA 101.91 test No. 6.3 and ASTM E2098, d) Be tested for alkali resistance by 28 days immersion in 5% sodium hydroxide with no visual degradation at the end of the test, and e) Overlap at mesh to mesh joints for at least 75 mm.
4.1.3.3 Base coat plaster
The base coat plaster shall: a) Be at least 3 mm thick and form a flat plane surface and be either: i) polymer-modified cement-based plaster, or ii) polymer based plaster, b) Be reinforced with an alkali-resistant fibreglass mesh as specified in section 4.1.3.2, c) Cover the mesh by at least 1.0 mm, d) Be applied out of direct sunlight at temperatures between 5C and 30C, and with the expectation that the temperature will be within that range for the following 24 hours, and e) Have a bond strength with the polystyrene board tested in accordance with ASTM E2134-01(2006).
4.1.3.4 Finish coat
The finish coat shall comprise either: a) A polymer-modified cement-based plaster or a polymer-based plaster, finished in both cases with a paint coating, or b) Either a pre-coloured polymer-modified cement-based plaster, or a pre-coloured polymer-based plaster with the top coat applied as a decorative plaster that is sealed or glazed. Finish colours for EIFS shall have a reflectivity of 25% or more when measured in accordance with ASTM C1549 or ASTM E903.
COMMENT: Dark colours cause finishes to reach higher temperatures, which results in more thermal expansion and a greater risk of cracking. Coating manufacturers can supply reflectance values.
4.1.3.5 Openings and penetrations
a) All window/ door openings shall have waterproof membranes as specified in section 3.1.5.2, b) All wall recesses shall have waterproof membranes as specified in section 3.1.5.2, c) All window/ door openings, wall recesses and penetrations shall have sealant, or air seals as detailed in sections 3.1.1 to 3.1.2, and d) Openings and penetrations in EIFS shall be completed as shown in Details 11, 53, 57a & 57b.
COMMENT: This is the minimum standard, and additional elements required by the system supplier should not be excluded on the basis of this Code of Practice.
4.1.3.6 Decorative mouldings
Decorative mouldings formed from polystyrene shall be glued onto the base coat plaster and in addition meshed on at the top edge. The adhesive bond strength shall be tested in accordance with ASTM E2134-01(2006). Control joints shall be reflected through the mouldings.
COMMENT: Decorative mouldings formed from other materials are available, but due to unknown weight and rigidity of the mouldings specific design of the fixing is required.
4.1.4 Movement joints
Control joints shall be provided to coincide with the control joints in the masonry or concrete substrate. The joint shall be 8 to 15 mm wide as shown in Detail 69a. The front of the joint shall use either a sealant as specified in section 3.1.1 or an EIFS joint profile as per Detail 69a. The sealant shall have a width to depth ratio of 2:1. At junctions between concrete walls and timber or metal frame walls, a control joint and back flashing as shown in Details 61 to 64 shall be provided.
EIFS/floor slab junction
The bottom of the EIFS shall run at least 100 mm into ground as shown in Details 1 and 2 and incorporate a waterproofing capillary break in the insulation. The capillary break shall be formed by a continuous cut through the insulation board. The bottom section of the insulation board shall be made watertight by applying a membrane as specified in 4.2.3 and as shown in Details 1 and 2.
COMMENT: If the EIFS terminates above ground, no capillary break is required but the bottom edge of the EIFS should be finished using a PVC cap incorporating a drip profile.
Parapets and balustrades shall comply with section 6.11. Balustrades shall use the same weathertightness details and specifications as for parapets.
Fixings of downpipes brackets, garden taps and other outside fittings shall be in accordance with NZBC E2/AS1 Paragraph 9.9.4.4. Designs of fixing brackets for connecting items carrying substantial loads such as stringers for decks are outside the scope of this Code of Practice and will require specific design.
4.2 Plaster system
This section specifies plaster systems applied directly to either: a) A Concrete Masonry Wall type A1 or A3 (internal or integral insulation), or b) An Insitu Concrete Wall type B1 or B3 (internal or integral insulation), or c) A Precast Concrete Wall type C1 or C3 (internal or integral insulation). The exterior plaster system shall comprise a combination of plaster layers as specified in Table 3 and as detailed in section 4.2.1. All layers specified for a given option shall be used. The substrate shall be free of contaminates prior to the application of the base coat. Plaster shall be applied out of direct sunlight at temperatures between 5C and 30C, with the expectation that the temperature will be within that range for the following 24 hours.
Acceptable weathertight plaster systems Plaster type A B C D E F G H i
Wall type B1, B3, C1, C3 B1, B3, C1, C3 B1, B3, C1, C3 B1, B3, C1, C3 B1, B3, C1, C3 A1, A3 A1, A3 A1, A3 A1, A3 A1, A3 A1, A3
4.2.1 Plaster types
The plaster types to be used as specified in section 4.2 and the associated Table 3 shall be as follows. Type A: Polymer based plaster base coat comprising: i) Plaster of at least 3 mm thickness to form a flat plane surface, ii) Reinforcing with an alkali-resistant fibreglass mesh as specified in section 4.1.3.2, iii) Cover to the mesh of at least 1.0 mm of plaster, and iv) A minimum bond strength of 0.1 MPa to the concrete or concrete masonry substrate. Type B: Polymer modified cement-based plaster base coat comprising: i) Plaster of at least 3 mm thickness to form a flat plane surface, ii) Reinforcing with an alkali-resistant fibreglass mesh as specified in section 4.1.3.2, iii) Cover to the mesh of at least 1.0 mm of plaster, and iv) A minimum bond strength of 0.1 MPa to the concrete or concrete masonry substrate. Type C: Solid plaster base coat comprising: i) Bond or scratch coat 3 to 4 mm thick, reinforced with an alkali-resistant fibreglass mesh as specified in section 4.1.3.2, and ii) Flanking coat 9 to 15 mm thick in accordance with NZS 4251. Type D: Polymer based plaster finish coat with a standard acrylic coating of no less then 80m Dry Film Thickness. Type E: Polymer modified cement-based plaster finish coat with a standard acrylic coating of no less then 80m Dry Film Thickness. Type F: Pre-coloured polymer based plaster finish coat with a clear coat as specified in section 4.4 and with a permeability of less than 3 mm/hr. Type G: Pre-coloured polymer modified cement-based plaster finish coat with a clear coat as specified in section 4.4 and with a permeability of less than 3 mm/hr. Type H: Solid plaster finish coat, 2 to 3 mm thick, applied in accordance with NZS 4251. Type I: Three coat cement-based solid plaster in accordance with NZS 4251 Section 3: Plaster system for concrete masonry walls.
4.2.2 Movement control joints
Control joints shall be provided to coincide with the control joints in the masonry or concrete substrate. The joint shall be 8 to 20 mm wide as shown in Detail 69b. The sealant, as specified in section 3.1.1, shall have a width:depth ratio of 2:1.
CCANZ CPCP 01:2011 CCANZ 01:2011
4.2.3 Membrane for plaster
An additional layer of waterproofing shall be applied to: a) Window and Door Openings as per Details 11 and 12, b) Footings and Wall to Ground Junctions as per Details 1, 2, 3a, 3b, 4, and 5, and c) Parapets as per Details 32 and 33. The waterproofing membrane for plaster shall consist of a reinforced liquid membrane that complies with AS/NZS 4858 and which is suitable for the application of plaster.
4.3 Pigmented coating system
This section specifies pigmented coating systems applied directly to either: a) A Concrete Masonry Wall type A1 or A3, or b) An Insitu Concrete Wall type B1 or B3, or c) A Precast Concrete Wall type C1 or C3. Concrete walls shall be sufficiently dry to give a relative humidity reading of less than 70% at the time of coating application. The substrate shall be free of contaminates prior to the application of the coating system.
COMMENT: If a release agent has been used, make sure that no contaminates remain on the concrete surface.
Coating shall be applied out of direct sunlight and at temperatures between 5C and 30C, with the expectation that the temperature will be in that range for the following 12 hours. Coating shall not be applied in damp conditions.
4.3.1 Pigmented acrylic coating
Pigmented acrylic coatings for exterior use shall have a Dry Film Thickness of at least 80 m. No less than two coats shall be applied. Pigmented acrylic coatings shall not be applied to concrete masonry walls.
COMMENT: Pigmented acrylic coatings are suitable for concrete precast and concrete insitu walls.
4.3.2 Pigmented standard or elastomeric high build acrylic coating
Pigmented standard or elastomeric high build acrylic coatings for exterior use shall have a dry film thickness of at least 180 m. No less than two coats shall be applied.
COMMENT: Pigmented standard or elastomeric high build acrylic coatings are suitable for concrete masonry walls, concrete precast and concrete insitu walls. EDITORS COMMENT: The wording standard or has been included into the CP-01, 4.3.2 with amendment of 15 Nov 2012.
4.4 Clear coating system
This section specifies clear coating systems applied directly to either: a) A Concrete Masonry Wall type A1 or A3, or b) An Insitu Concrete Wall type B1 or B3, or c) A Precast Concrete Wall type C1 or C3. Clear coating systems complying with section 4.4.2 are weathertight. The coating system shall be supplied by a single supplier who takes responsibility for the system as a whole, encompassing the weathertight coating. The system shall be applied by the coating manufacturers approved applicator. Clear coating systems are to be recoated every five years at a minimum or in accordance with the manufacturers specifications. The clear coating system shall be designed to prevent water ingress into the pores of the concrete or masonry. The system shall allow the passage of water vapour from the interior to the exterior.
COMMENT: Clear coatings have been included in this Code of Practice recognising the move to minimalist architecture using unpainted concrete and masonry. Clear coatings do not always have the flexible film forming ability that acrylic coatings have. Therefore they require a strict maintenance regime and need recoating at shorter intervals.
4.4.1 Permeability test
Clear coating system shall be tested for permeability in accordance with AS/NZS 4456.16. The test shall be conducted on a standard masonry block with a density of between 1350 1500 kg/m3 over a test period of two hours.
4.4.2 Acceptable clear coating systems
Clear sealers for insitu and precast concrete walls shall have a permeability of 3 mm/hr or less when tested in accordance with section 4.4.1. Clear sealers for concrete masonry walls shall have: a) A permeability of 1 mm/hr or less when tested in accordance with section 4.4.1, or b) A permeability of 3 mm/hr or less when tested in accordance with section 4.4.1 if the wall is constructed of low permeability blocks. Low permeability blocks shall have a permeability of less than 10 mm/hr when tested in accordance with section 4.4.1.
4.5 Watertight concrete
This section specifies watertight concrete used to construct either: i) An Insitu Concrete Wall type B1 or B3, or ii) A Precast Concrete Wall type C1 or C3. The use of watertight concrete which is impervious to the passage of water will provide weathertightness without the need for exterior plaster or coating. Watertight concrete shall: a) Comply with NZS 3104 Clause 2.10.2, b) Have a minimum specified 28 day concrete strength of 50 MPa, c) Have a water/cementitious (w/c) ratio (by weight) less than 0.50, d) Incorporate a permeability reducing admixture complying with AS 1478.1 Appendix F, e) Be designed to prevent cracking in service in accordance with section 2.1, and f) Be verified as watertight by passing an AVPV (Apparent Volume of Permeable Voids) test on the hardened concrete in accordance with section 4.5.1.
COMMENT: A limiting tensile stress of 150 MPa in the reinforcing steel under service loads as determined in AS/NZS 1170 prevents cracking. The term 'watertight concrete' is used in this case as it is the term used by the Concrete Institute of Australia in its Practice Note on watertight concrete structures. Watertight concrete will not prevent the passage of water vapour. Silane or siloxane sealers can be used to further protect and enhance water repellent properties.
4.5.1 Apparent Volume of Permeable Voids (AVPV) test requirements
The AVPV test shall be carried out in accordance with AS 1012.21 on three cylinders cast in accordance with NZS 3112 Part 2. The maximum permitted AVPV value based on the average of 3 cylinders shall be 13%.
5.0 Flashings
5.1 Required properties of flashing materials
5.1.1 Durability requirements
All flashings shall comply with the requirements of NZBC B2 Durability.
COMMENT: The durability requirements for flashings specified in NZBC B2 are: a) 50 years, where flashings are: i) completely hidden behind claddings or ii) not accessible, or b) 15 years, where flashings are: i) exposed, or ii) accessible.
5.1.2 Environmental requirements
Flashing materials shall be selected according to the relevant exposure conditions as defined in either: a) AS/NZS 2728, or b) NZBC E2/AS1 Table 20.
COMMENT: The exposure zone in which a building is located can affect the durability of flashings. Exposure zones for flashing materials are defined in NZS 3604 Chapter 4, based on the likely exposure to wind-driven sea-salt. Exposure due to geothermal or industrial gases, as defined in NZS 3604, is outside the scope of this Code of Practice and will require specific design.
5.1.3 Specific conditions of use
Flashing materials shall be selected according to the specific conditions of their use from NZBC E2/AS1 Table 20 to minimise the effects of corrosion.
COMMENT: The specific location of a material on a building can substantially affect the durability of that material. In particular, many metals can undergo accelerated corrosion if they are exposed to wind-driven sea-salt in sheltered locations, where they are not exposed to being washed by rainwater.
5.1.4 Surrounding materials
Flashings which are adjacent to other materials shall be selected in accordance with NZBC E2/AS1 Tables 21 and 22. Uncoated metals shall not be used where carbon deposits or chemical contaminants may accumulate.
COMMENT: Undesirable effects can occur when some materials are in contact with each other. Examples are corrosion of metals, stress cracking of plastics and staining of glass. Carbon deposits such as soot can cause accelerated corrosion of damp, uncoated metal.
5.2 Acceptable flashing materials
COMMENT: Additional guidance on flashing materials can be found in the New Zealand Metal Roofing Manufacturers Roof and Wall Cladding Code of Practice.
5.2.1 uPVC flashings
uPVC flashings shall be a minimum of 0.75 mm thick and shall comply with the requirements of the following Clauses of AS/NZS 4256: Part 2: a) Clause 9.2 Impact resistance, b) Clause 9.3 Tensile strength, and c) Clause 9.4 Colourfastness and impact resistance following ultraviolet light exposure. Where uPVC flashings are exposed to the weather, they shall also comply with Section 8 of AS/NZS 4256: Part 2. uPVC flashings shall have a finish colour with a reflectance of 40% or more.
COMMENT: Manufacturers of uPVC flashings which have a proven performance in use may be able to show compliance with NZBC B2 Durability as detailed in NZBC B2/VM1.
5.2.2 Metallic flashings
Metallic flashings (aluminium flashings, galvanised steel flashings, aluminium-zinc coated steel flashings, stainless steel flashings, copper flashings, lead sheet flashings and zinc sheet flashings) shall be as specified in NZBC E2/AS1 Paragraphs 4.3.2 to 4.3.8 respectively, except that aluminium flashings shall not be used in contact with fresh cement plaster or green concrete (ie concrete which has cured less than 28 days).
5.3 Fixings
Fixings of metal flashings shall comply with NZBC E2/AS1 Tables 20, 21 and 22. Where fixings that penetrate flashings, self-tapping nails or screws provided with a watertight underlay disc shall be used.
COMMENT: Fixings that penetrate flashings should be avoided wherever possible.
6.0 Concrete roofs and decks
Concrete roofs and decks shall be made weathertight by applying a roof membrane as specified in section 6.5. The following details, as shown in section 10, shall be used for concrete roof and deck construction: Detail 16 Door/ Threshold at Deck, external roof insulation Detail 17 Door/ Threshold at Deck, internal roof insulation Detail 30a Flat Roof, general built up, internal roof insulation Detail 30b Flat Roof, general built up, external roof insulation Detail 39 Roof Gully, external roof insulation Detail 40 Roof Gully, internal roof insulation Detail 41 Roof Exit, AOV, external roof insulation Detail 42 Roof Exit, AOV, internal roof insulation Detail 51 Decking Options, external roof insulation Detail 52 Decking Options, internal roof insulation Junctions of roofs or decks to walls shall be as specified in section 6.9. Parapets and balustrades shall be as specified in section 6.11.
COMMENT; Sections through a typical insulated flat roof showing the arrangement of the vapour barrier, insulation and membrane are shown in Detail 30a (internal or under- slab insulation) and Detail 30b (external insulation). In Detail 30a, either a single torch on membrane or an adhesive membrane could be used. In Detail 30b, the vapour barrier below the insulation keeps the insulation dry from vapour arising from the inside of the building. A double membrane could be used directly over the insulation where the lower membrane is adhesive fixed to the insulation and the top membrane is being torched on.
Concrete used for roof and deck construction shall either be certified by the New Zealand Ready Mixed Concrete Association (NZRMCA) Plant Audit Scheme or by a Chartered Professional Engineer confirming the concrete complies with NZS 3104.
This Code of Practice limits concrete flat roofs and decks to those with: a) Parapets at all edges, b) Bituminous or butyl and EDPM sheet roof membranes installed over concrete or insulation board, c) A fall of between 1.5 (1:40) and 5 (1:11), d) No integral roof gardens, e) No downpipe directly discharging to the roof or deck, f) No cantilevering in their construction, and g) Decks with removable raised surfaces to protect the roof membrane, as shown in Details 16, 17, 51 and 52.
COMMENT: Discharging gutters directly onto decks increases the chances of water entry into sensitive areas. Direct discharge may be allowed into gutters calculated to have sufficient water-carrying capacity, but this is outside the scope of this Code of Practice.
Concrete roofs and decks shall be designed in accordance with AS/NZS 1170, NZS 3101 and section 2.1 of this Code of Practice, and constructed in accordance with NZS 3109. Parapets and balustrades form part of the roof or deck design and construction. Parapets and balustrades formed of concrete masonry shall be designed in accordance with NZS 4230 and constructed in accordance with NZS 4210. The slab shall be formed from insitu concrete, or precast concrete with an insitu concrete topping. Drainage falls shall be provided by either a sloped screed or by sloped thermal insulation boards.
COMMENT: Concrete used to construct roofs and decks shall be designed as a suspended concrete floor in accordance with NZS 3101 and 3109. Suspended concrete floors used as a diaphragm shall meet the requirements of NZS 4229 for horizontal loads. If they perform other structural functions, they shall be subject to specific design in accordance with NZS 3101. In all cases, the dead load of suspended concrete floors shall not exceed 6.0 kPa.
6.3 Substrate finish
The finish of the concrete surface to take the roof membrane shall be a light broom or a U2 wood float to NZS 3114 or U3 steel trowel. At the time of laying the roof membrane, the concrete shall be either: a) More than 28 days old, or b) Sufficiently dry so as to give a relative humidity reading of less than 75%. The concrete shall be cleaned and any contaminants such as curing compound or release agents shall be removed.
COMMENT: Curing compounds should not be used unless necessary. The contractor is responsible for ensuring that moisture content of the substrate comes within the membrane suppliers requirements. Substrate ventilation of the membrane to substrate interface may be required where there is excess moisture present in building materials at the time of laying the membrane.
6.4 External roof insulation
The external roof insulation functions as substrate for the bituminous roof membrane and shall be a rigid type of either: a) Extruded polystyrene foam (XPS), or b) Polyurethane foam, or c) Cellular foamed glass. The specification of the external roof insulation shall be specifically designed to support the loads from the decking system as specified in section 6.7 plus the live loads as specified in AS/NZS 1170. The external roof Insulation shall be adhered to the substrate over a vapour control layer by: a) Cold adhered with bond strength of 4 kPa when tested in accordance with ASTM D7105, or b) Bedded in, melted down, or c) Self- adhesive vapour barrier sheet, or d) Mechanical fixing. The insulation board shall be installed in dry weather.
6.4.1 Vapour control layer
A vapour control layer shall be installed under the external roof insulation to prevent the entrapment of moisture. The vapour control layer shall be specified in accordance with ASTM C755. The vapour control layer shall be installed in dry weather.
6.5 Roof membrane
Roof and deck membranes shall be either: a) an EPDM or butyl rubber membrane as specified in section 6.5.1, or b) a bituminous membrane as specified in section 6.5.2.
6.5.1 EPDM and butyl rubber roof membrane
The membrane shall: a) Be a minimum thickness of: i) 1 mm for roofing, or ii) 1.5 mm for decks, b) Comply with the following parts of Table 1 in ASTM D6134: i) tensile strength, ii) elongation, iii) water absorption, iv) water vapour permeance, and v) heat aging followed by: a. tensile strength, and b. elongation, c) Have adhesives, primers and seam tapes that: i) comply with BRANZ EM 5 section 3.1, and ii) have bond strength of 4 kPa when tested in accordance with ASTM D903 and ASTM D7105, and iii) are part of a complete system approved by the manufacturer or supplier of the membrane, and d) be UV resistant unless the membrane is protected from sunlight, and e) Have a membrane colour with a light reflectance greater than 40%.
COMMENT: If non UV-resistant membranes are used, then recommended methods of protection from sunlight include: 1) Embedded mineral granules - selecting mineral membranes which comply with the technical requirements of the Membrane Group of New Zealands Code of Practice for Torch-on Membrane Systems for Roofs and Decks will ensure the mineral is well embedded (rolled-in) into the membrane to ensure non-shedding of mineral, with can result in bald patches, and 2) Using a high-performance reflective coating system as part of the membrane system to provide long-term protection.
For installation, adhesives shall be applied to both the membrane and the substrate. When tack-dry, the membrane shall be rolled into the substrate. Seam tapes shall be used on all joints. Seams should be aligned parallel to the fall of the deck to
minimise ponding. COMMENT: It is recommended that installation of membrane roofs and decks be carried out by trained installers, approved by the manufacturer or the New Zealand agent (in the case of imported membrane). Membrane adhesives should be selected for the applicable substrate, concrete or rigid insulation. Penetrations made through the membrane subsequent to laying require specific design.
6.5.2 Bituminous roof membrane
The membrane shall: a) Meet the performance requirements of the Code of Practice for Torch-on Membrane Systems for Roofs and Decks, sections 4.2 and 4.3, b) Have adhesives, primers and seam tapes that: i) comply with BRANZ EM 5 section 3.1, and ii) have bond strength of 4 kPa when tested in accordance with ASTM D903 and ASTM D7105, and iii) are part of a complete system approved by the manufacturer or supplier of the membrane, and c) be UV resistant unless the membrane is protected from sunlight. The membrane installation shall follow the Code of Practice for Torch-on Membrane Systems for Roofs and Decks, sections 7.2, 7.3 (excluding 7.3.1 and 7.3.2), 7.4, 7.6.2, 7.6.4 and 7.6.8. For externally insulated roofs and decks, a double layer waterproofing membrane on top of the insulation shall be used. The first layer shall be a self adhesive or cold-fixed layer to avoid damage from torching flame, and the second layer (top layer) shall be torched on. All laps shall be heat welded on the second layer. Additionally a vapour barrier, either liquid or self adhesive, shall be applied between the concrete roof/ deck and the insulation boards to prevent vapour from inside the building diffusing into the insulation.
6.6 Roof and deck drainage
Roofs and decks shall be constructed so that: a) The highest point of the waterproofing membrane on a roof or deck shall be at least 100 mm below an adjoining interior floor, b) A minimum clear drainage gap of 12 mm shall be provided between the decking edge and the wall or parapet or balustrade cladding, c) A minimum 150mm upstand of the roof/deck membrane shall be provided at all roof/ deck to wall and parapet junctions, except at thresholds where this can be reduced to 100mm. No penetrations shall be made through this membrane upstand. d) Water discharges directly into roof outlets with a minimum diameter of 75 mm as shown in Detail 39 and 40, e) External corner upstands in the membrane are formed in accordance with NZBC E2/AS1 Figure 57, f) Allowance for additional run-off shall be provided by an extra outlet, with both outlets sized to take the full required capacity, and g)The number of rainwater outlets is no less than two.
6.7 Additional deck requirements
In addition to the requirements of section 6.5, a deck shall have: a) A raised removable decking system of tiles or timber slats in accordance with Details 16, 17, 43 to 52 and E2/AS1 Figure 17A, with a minimum clear drainage gap of 12 mm that shall be provided between the decking edge and the wall or parapet or balustrade cladding, or b) Paving on a rounded pebble drainage layer (that can be removed for maintenance) in accordance with Details 51 and 52. Doors for level access shall be constructed in accordance with Detail 16 or 17 or E2/AS1 Figure 17A and: a) Have a minimum clear drainage gap of 12 mm between the decking edge and the door sill or the door frame, or b) Have an external linear drainage grille along the length of the door opening.
6.8 Control joints
The design of control joints for membrane roofs and decks is subject to specific design and is outside the scope of this Code of Practice. All control joints in the substrate shall be accommodated in the membrane.
6.9 Junctions
All junctions of roofs or decks to walls and doors shall be constructed in accordance with the following Details and Figures where relevant: Detail 16 Door/Threshold at Deck, external deck insulation Detail 17 Door/Threshold at Deck, internal deck insulation Detail 43 Roof/ Deck at Wall, masonry, insitu or precast walls, external roof insulation, external wall insulation (EIFS) Detail 44 Roof/ Deck at Wall, masonry, insitu or precast walls, external roof insulation, internal wall insulation Detail 45 Roof/ Deck at Wall, insitu or precast walls, external roof insulation, integral wall insulation Detail 46 Roof/ Deck at Wall, masonry walls, external roof insulation, cavity wall insulation Detail 47 Roof/ Deck at Wall, masonry, insitu or precast walls, internal roof insulation, external wall insulation (EIFS) Detail 48 Roof/ Deck at Wall, masonry, insitu or precast walls, internal roof insulation, internal wall insulation Detail 49 Roof/ Deck at Wall, insitu or precast walls, internal roof insulation, integral wall insulation Detail 50 Roof/ Deck at Wall, masonry walls, internal roof insulation, cavity wall insulation NZBC E2/AS1 Figure 62.
COMMENT: Adding wearing surfaces over the membrane effectively reduces clearances and should be allowed for when setting membrane levels.
6.10 Penetrations
Penetrations for external and internal insulation options shall be constructed in accordance with Details 39 to 42. No fixing shall penetrate the exposed horizontal roof membrane or any exposed non vertical applied roof membrane.
6.10.1 Handrails
Connections of stanchions for handrails and other fixtures (such as TV aerials or satellite dishes) shall be side-fixed to a vertical surface and shall have the junction with the exterior wall made weathertight by using the connections shown in Details 31 to 38.
Fixing of posts through non vertical roof membrane areas shall be avoided.
COMMENT: Any fixings of posts through roof or deck membranes require specific design.
6.11 Parapets
Parapets shall be constructed in accordance with the following Details: Detail 31 Parapet, profiled capping, external roof insulation, masonry, insitu or precast walls, EIFS Detail 32 Parapet, integral capping, Option A, external roof insulation, masonry, insitu or precast walls, EIFS Detail 33 Parapet, integral capping, Option B, external roof insulation, masonry, insitu or precast, walls, EIFS Detail 34a Parapet, profiled capping, Option A, internal roof insulation, masonry, insitu or precast walls, internal insulation Detail 34b Parapet, profiled capping, Option B, internal roof insulation, masonry, insitu or precast walls, internal insulation Detail 35 Parapet of insitu or precast wall, internal roof and wall insulation Detail 36a Parapet of composite insitu or precast wall, Option A, external roof insulation, integral wall insulation Detail 36b Parapet of composite insitu or precast wall, Option B, external roof insulation, integral wall insulation Detail 37 Parapet of composite insitu or precast wall, integral capping, external roof insulation, integral wall insulation Detail 38 Parapet with profiled capping for masonry wall
6.11.1 Capping materials
Cappings for concrete parapets shall be formed either: a) As an integral capping by continuing the weathertight system up and over the parapet top, or b) By using a metal capping. Capping materials shall be selected in accordance with section 5.0. Integral cappings for EIFS and plaster weathertight systems shall incorporate an additional waterproof membrane, as specified in section 4.2.3, beneath the plaster and as shown in Details 32, 33, 35 and 37. Cappings for parapets constructed from concrete masonry shall use a metal capping system only.
6.11.2 Metal cappings
Metal cappings shall be either clipped to steel brackets, bolted to the top of the parapet or fixed with self tapping screws to the sides of the parapet as shown in Details 31, 34a, 34b and 38. Metal cappings shall also comply with all the following requirements: a) Tops of cappings shall be free of any penetrations, b) Slope of top shall be 5 (1:12) minimum and sloped packers under cappings shall be timber treated to NZS 3602 or 9 mm H3 plywood on packers, c) All cappings shall have drip edges, with minimum drip edges the same as those specified in Details 31,34a & b, 36a, 36b & 38, d) Lengths of capping shall be joined in accordance with NZBC E2/AS1 Figure 9 (b) or Figure 9 (d), e) External corners of cappings shall be in accordance with NZBC E2/AS1 Figure 9 (e), f) Expansion joints shall be provided for joined cappings with a combined length exceeding either: i)12 m for light coloured steel and stainless steel, or ii) 8 m for dark coloured steel, or iii) 8 m for copper, or iv) 8 m for aluminium, g) Where both ends of a capping are constrained, allowance shall be made for expansion, h) Where necessary, expansion joints shall be formed as shown in NZBC E2/AS1 Figure 9 (g), and with: i) minimum 200 mm laps, ii) sliding clips at both sides of the lap, and i) Where a capping finishes against a wall, a saddle flashing with a 100mm overlap extending 50mm up the wall shall be provided as shown in NZBC E2/AS1 Figure 12 (a). Joints and corners of metal cappings shall be constructed in accordance with NZBC E2/AS1 Figure 9.
7.0 Concrete slab-on-ground and footings
Concrete slab on ground and wall footings shall: a) Comply with NZS 4229 section 6 and 7 and NZS 4210, or b) Be designed in accordance with AS/NZS 1170, NZS 3101 and section 2.1 of this Code of Practice, and constructed in accordance with NZS 3109. The minimum acceptable ground floor level for the concrete floor shall be in accordance with NZBC E1/AS1 Section 2.0.
COMMENT: Concrete curing requirements in NZS 4229 specify a minimum 28 day concrete strength in accordance with NZS 3604 exposure zones as follows: (a) 17.5 MPa for reinforced concrete either not exposed to weather or exposed to the weather in Zone B, or (b) 20.0 MPa for reinforced concrete exposed to weather in zone C, or (c) 25.0 MPa for reinforced concrete exposed to weather in Zone D. NZS 4229 specifies slab thicknesses in clause 7.8 and requires slabs to be reinforced with 665 mesh.
Concrete used for footing and floor construction shall either be certified by the New Zealand Ready Mixed Concrete Association (NZRMCA) Plant Audit Scheme or by a Chartered Professional Engineer confirming the concrete complies with NZS 3104.
7.2 Wall footing details
The wall/floor junction shall be constructed in accordance with Details 1 to 6.
7.3 Finished floor level
The ground directly adjacent to the building shall be sloped no less than 1:25 for at least 1 m to carry water away from the building. The height of the finished floor level above adjacent final landscaped ground levels shall comply with NZS 4229 Clause 7.2.1 and be no less than 100 mm if the ground is permanently paved, or 150 mm if the ground is unpaved.
COMMENT: It is important that ground clearances are maintained after completion and occupation of the building. The likely final landscaped ground levels should be taken into account when planning foundations and earthworks to avoid reductions in minimum ground levels in the finished building. It is recommended that the building platform be formed at a level of at least 300 mm below the finished floor level, with the exterior ground sloped to carry water away from the exterior walls. This allows landscaping and paving to be built up while still maintaining the required clearances.
7.4 Damp-proof membranes (DPM)
Every concrete floor slab cast on the ground shall have a damp-proof membrane (DPM), which shall be either: i) Laid between the ground and the slab as shown in Details 1 to 6, or ii) Laid between the top of the slab and a concrete floor topping that is no less than 50 mm thick. The DPM shall: a) Be in accordance with NZS 4229, section 7.4 - 7.7, c) Continue to remain waterproof for a minimum of 50 years, and d) Be continuous over the whole slab area or under a concrete floor topping. To avoid damage to the damp-proof membrane, a granular base in accordance with NZS 4229 Section 7.3.3 shall be placed.
7.4.1 Wall footings in poorly drained sites
For poorly drained sites, the DPM shall be extended vertically up the external face of the footings as specified in Details 1 to 6. In this case a sheet applied self adhesive DPM shall be used. The DPM shall be overlapped with the wall weathertightness system for at least 50 mm as shown in Details 1 to 6.
7.5 Protection of timber
Timber shall be separated from the concrete slab by a damp-proof course (DPC).
Control joints shall be placed in accordance with NZS 4229 section 7.8.5 or as specified by specific design in accordance with AS/NZS 1170 and NZS 3101.
8.0 Construction moisture
Moisture in the building structure at completion of construction shall be limited to avoid damage to the building elements.
COMMENT: Excessive moisture content in concrete floors may inhibit bonding of subsequent floor coatings.
Construction moisture includes the moisture contained in: a) Timber products as a result of a treatment or manufacturing process, b) Timber or other materials as a result of exposure to the weather, and c) Concrete, mortar or plaster that is not completely cured.
8.1 Maximum acceptable moisture
The maximum moisture contents shall: a) For concrete floors, have a relative humidity of less than 75% at the time of applying wall membranes, sealants, weathertightness systems or fixed floor coverings, and b) For concrete walls, have a relative humidity reading of less than 70% at the time of applying wall membranes, sealants or weathertightness systems.
8.2 Measuring moisture content in concrete
Measurement of moisture content shall be made in accordance with BRANZ Bulletin 424 Measuring moisture on building sites" using hygrometers calibrated to ASTM E104: 2002 Standard practice for maintaining constant relative humidity by means of aqueous solutions.
COMMENT: Measurement of moisture content in timber should be made in accordance with NZBC E2/AS1 Paragraph 10.3.
9.0 Detail Drawings
EIFSasspecified insection4.1
Concretemasonryorinsituwall (shownasmasonry)
Weatherproofingasspecified in4.1.5shalloverlapDPMfor atleast50mm. Angleofcapillarybreaknot criticalforweathertightness. Plastercontinuesacross capillarybreak
DPM Concreteslab
Clearancetotopofslab
100 100mm 200mm
VerticalDPMisonly requiredforpoorly drainedsites,otherwise canbestoppedhere
Sandblinding Compactedhardfill
Comment 1: Underfloor insulation not required for weathertightness, but may be required to improve the floor's R value. Comment 2: Structural layout is indicative only and subject to individual project design.
Detail 1 Wall/ Footing Junction: Slab on Ground Concrete Masonry or Insitu Wall: EIFS
Wall type: A2, B2
Weatherproofingasspecified in4.1.5shalloverlapDPMfor atleast50mm. Angleofcapillarybreaknot criticalforweathertightness. Plastercontinuesacross capillarybreak 150mm 100 200mm
100mm Continuousgrout
Precastpackerstosuit (notrequiredforinsitu) VerticalDPMisonly requiredforpoorly drainedsites,otherwisecan bestoppedhere Sandblinding Compacted hardfill
Detail 2 (not to scale) Wall/ Footing Junction: Slab on Ground Insitu or Precast Wall: EIFS
Wall type: B2, C2
Arebateof45mmto100mmisrequired underconditionsasspecifiedinTable2 ofsection3.2
Insulation/strapping andlining (indicativeonly, notrequiredfor weathertightness)
Weathertightnessasspecified insection4.2or4.3
Membraneasspecifiedin 4.2.3shallextendabove groundbyatleast 150mmandifDPMis appliedtoexternalface offootingitshalloverlap DPMbyatleast50mm 50mm 150mm Concreteslab
DPMextensiononly requiredforpoorly drainedsites,otherwise canbestoppedhere
Detail 3a (for weathertightness system 4.2 and 4.3) (not to scale) Wall/ Footing Junction: Slab on Ground (no rebate) Concrete Masonry Wall: Internal & integral Insulation Wall with external plaster or coating
Wall type: A1, A3
Weathertightnesssystemas specifiedinsection4.4 Concretemasonrywall
020mmprojectionof Bottomblockoverfoundation Membraneasspecifiedin 4.2.3shallextendabove groundbyatleast 100mmandifDPMis appliedtoexternalface offootingitshalloverlap DPMbyatleast50mm 50mm 150mm 100mm Clearancetotopofslab
Rebateof DPM 45mmto100mm
Detail 3b (for weathertightness system 4.4) (not to scale) Wall/ Footing Junction: Slab on Ground Concrete Masonry Wall: Internal & integral Insulation Wall with external clear coating
Weathertightnesssystemas specifiedin section4.2,4.3,4.4or4.5. Concretewall Membraneasspecifiedin 4.2.3shallextendabove groundbyatleast100mm andifDPMisappliedto externalfaceoffootingit shalloverlapDPMbyat least50mm Clearancetotopofslab
DPM 150mm Concreteslab
Continuousgrout
Precastpackerstosuit (notrequiredforinsitu) DPMextensiononly requiredforpoorly drainedsites,otherwise canbestoppedhere
Detail 4 (not to scale) Wall/ Footing Junction: Slab on Ground Insitu or Precast Wall: Internal Insulation
Wall type: B1, C1
Weathertightnesssystemas specifiedinsection 4.2,4.3,4.4or4.5 Membraneasspecifiedin 4.2.3shallextendabove groundbyatleast100mm andifDPMisappliedto externalfaceoffootingit shalloverlapDPMbyat least50mm Clearancetotopofslab
Concretewall Insulation (indicativeonly, notrequiredfor weathertightness)
Continuouschamfered grout Precastpackerstosuit (notrequiredforinsitu) DPMextensiononly requiredforpoorly drainedsites,otherwise canbestoppedhere
Detail 5 (not to scale) Wall/ Footing Junction: Slab on Ground Insitu or Precast Wall: Integral Insulation
Wall type: B3, C3
Masonryveneer Clearcavity,40mmmin Thermalinsulation (indicativeonly,notrequired forweathertightness) Concretemasonrywall Bricktie (designshownindicativeonly, couldalsobecastintothe innermasonryjoints) Verticaljointstobeopen betweenbricksevery800mm atmaximumtoprovide ventilation/weepopeningsof 1000mm/mmin. 520mmprojectionof bottombrickover foundation
Clearancetotopofrebate
50150mm 70mm
Waterproofcoatingas specifiedinsection3.1.7.4 toguidewateraway throughweepholes
Greyshownextensionof DPMonlyrequiredfor poorlydrainedsites
Detail 6 Wall/ Footing Junction: Slab on Ground Concrete Masonry Wall With Drained Cavity
Wall type: A4
Wall:Concretemasonry,insituorprecastconcrete
Detail 7 Wall/ Upper Floor Slab Junction Concrete Masonry, Precast or Insitu: External Insulation
Weathertightness systemasspecified insection 4.2,4.3,4.4or4.5
Wall type: A2, B2, C2
(nottoscale)
Wall:Concretemasonry,insituorprecastconcrete Insulation/strappingandlining (indicativeonly,not requiredforweathertightness)
Detail 8 Wall/ Upper Floor Slab Junction Concrete Masonry, Precast or Insitu: Internal Insulation
Wall type: A1, B1, C1
Comment: If masonry block with integral insulation applies, internal insulation may be ignored depending on required wall R value
Concretewallwithintegralinsulation (indicativeonly,not requiredforweathertightness)
Detail 9 Wall/ Upper Floor Slab Junction Precast or Insitu Wall: Integral Insulation
Masonryveneer Clearcavity, 40mmmin Thermalinsulation (indicativeonly,not requiredforweathertightness)
Bricktie (designshownindicativeonly,couldalso becastintotheinnermasonryjoints)
Wall type: A3, B3, C3
Concretemasonrywall
Detail 10 Wall/ Upper Floor Slab Junction Concrete Masonry Cavity Wall: Cavity Insulation
Note1:Structural layout is indicative only and subject to individual project design.
Packer Waterproofcoatingormembrane continuousatheadandjambsas specifiedinsection3.1.5.3 Dripedgeformedfromplaster orpvcangle (notrequiredforjambdetail)
HEAD and JAMB
Waterresistant'Air Seal'asspecifiedin section3.1.2backed byaPEFrodto perimeteroftrim cavity 30mm 5mm applies alsoto jamb andsill
Additionalweathertightnessas specifiedinsection4.2.3 (onlyrequiredovermasonrywall)
EIFSplasterextendsoverconcreteto windowframe Continuousheadandjambseal asspecifiedin3.1.1backedbyaPEFrod
Windowframefixedto blockwork,andpackedas required. Sillmembraneasspecifiedin 3.1.5.4beneathwindow/doorto runalongtheentiresill,downthe faceandonexternalslopeand alsomin.40mmupjambs Silltoprovidemin.10mm overhang,with5mmmindrainage clearance(verticalandhorizontal EIFSplasterasspecifiedin4.2 overconcretesillsloping atleast15 30mm 10mm 5mm
5mm Waterresistant 'AirSeal'as specifiedin section3.1.2 backedbyaPEF rodtoperimeter oftrimcavity
Membraneforplasterasspecified insection4.2.3acrosssill EIFSasspecifiedinsection4.1
Comment 1: Structural layout is indicative only and subject to individual project design.
Detail 11 Window - Head, Sill and Jamb Concrete Masonry, Insitu or Precast: EIFS
Waterproofcoatingormembranecontinuousat headandjambsasspecifiedinsection3.1.5.3 Plasterorcoatingfinishasspecifiedinsection 4.2,4.3,4.4 10mm Dripedgeformedfromplasterorpvcangle
Additionalweathertightnessasspecifiedin4.2.3 (notrequiredforweathertightnesssystem4.3and4.4) Continuousheadandjambsealasspecifiedin section3.1.2backedbyaPEFrod
Windowframefixedtoblockwork, andpackedasrequired. Sillmembraneasspecifiedin 3.1.5.4beneathwindow/doorto runalongtheentiresillanddown theexternalfaceofthesillandmin. 40mmupjambs Sillprofiletoprovidemin.10mm overhang,with5mmdrainage clearance(verticalandhorizontal) Additionalweathertightnessasspecifiedin section4.2.3(notrequiredfor weathertightnesssystem4.3and4.4) Weathertightnesssystemas specifiedinsection4.2,4.3,or4.4 10mm 5mm 30mm 5mm
Waterresistant'AirSeal'asspecifiedin section3.1.2backedbyaPEFrodto perimeteroftrimcavity
5mm 30mm
Internalinsulation/strappingandlining (indicativeonly,notrequiredforweathertightness) Waterresistant'airseal'withPEFbackingrodto perimeteroftrimcavity Windowframefixedtoconcreteblockwork,and packedasrequired. Waterproofcoatingormembrane asspecifiedinsection3.1.5.3 Continuousheadandjambsealasspecifiedin section3.1.1backedbyaPEFrod Weathertightnesssystemasspecifiedin section4.2,4.3,or4.4
Additional weathertightnessas specifiedinsection4.2.3 (notrequiredfor weathertightnesssystem 4.3and4.4)
Comment 1: Structural layout is indicative only and subject to individual project design. Comment 2: Thermal insulation is not required for weathertightness.
Details 12 Window - Head, Sill and Jamb Concrete Masonry: Internal or integral Insulation
Waterproofcoatingormembraneasspecifiedin section3.1.5.3continuousatheadandjambs Weathertightnesssystemas specifiedinsection4.2,4.3,4.4or4.5 Dripedgeformedfromplasteror metalangleorpvcangle Continuousheadandjambsealasspecified insection3.1.1backedbyaPEFrod Waterresistant 'AirSeal'as specifiedin section3.1.2 backedbyaPEF rodtoperimeter oftrimcavity
30mm 5mm applies alsoto jamb andsill
Windowframefixedtoblockwork andpackedasrequired. Sillmembraneasspecifiedin3.1.5.4 beneathwindow/doortorunalongthe entiresillplateandsilland15mmdown thefaceandmin.40mmupjambs Silltoprovidemin.10mm overhang,with5mmdrainage clearance(verticalandhorizontal) Weathertightnesssystemas specifiedinsection4.2,4.3,4.4or4.5 Internalinsulation/strappingandlining (indicativeonly,notreq.forE2) Waterresistant'AirSeal'asspecifiedinsection3.1.2 backedbyaPEFrodtoperimeteroftrimcavity Windowframefixedtoconcretewall, andpackedasrequired. Waterproofcoatingormembrane, continuousatheadandjambs Continuousheadandjambsealasspecified insection3.1.1backedbyaPEFrod Weathertightnesssystemas specifiedinsection4.2,4.3,4.4or4.5 10mm 5mm 30mm 5mm
SILL INTERIOR JAMB
Details 13 Window - Head, Sill and Jamb Insitu or Precast Walls: Internal Insulation
Integralinsulation (notrequiredforweathertightness) Packer Closedcellfoam(notrequired forweathertightness)toisolate outerfrominnerconcretelayers Waterproofcoatingormembrane asspecifiedinsection3.1.5.3 continuousatheadandjambs Dripangleordripedgeformed inconcreteorplaster (notrequiredforjambdetail) Continuousheadandjambseal asspecifiedinsection3.1.2 backedbyaPEFrod Windowframefixedtowall, andpackedasrequired. Sillmembraneasspecifiedin3.1.5.4 beneathwindow/doortorunalong theentiresillplateandsilland15mm downthefaceandmin.40mmup jambs Silltoprovidemin.10mmoverhang, with5mmmindrainageclearance (verticalandhorizontal) Sealantasspecifiedsectionin3.1.1 Closedcellfoam(notrequiredfor weathertightness)toisolateouter frominnerconcretelayers Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5. 10mm 5mm 5mm Waterresistant'AirSeal'as specifiedinsection3.1.2 backedbyaPEFrodto perimeteroftrimcavity
Detail 14 Window - Head, Sill and Jamb Insitu or Precast Wall: Integral Insulation
Masonryveneer Clearcavity,40mmminimum
Membraneasspecifiedin3.1.5.4 overinsulationwedgetoensure waterflowoutthroughweep holes,providestopendsatlintel ends 50mm Membraneasspecifiedin 3.1.5.4 Steelanglecarryingbrick veneerabovewindow Flatpackerstosupportunit Waterproofcoatingor membraneasspecifiedin section3.1.5.3continuousat headandjambs
Bricktie Verticaljointstobeopenbetween bricksevery800mmmax.to provideventilation/weep openingsof1000mm/mmin.
Windowheadflashingto coverwindowframe Continuoussealasspecifiedin section3.1.1betweenflashing andwindowframe,gapwidth510mm
Waterresistant'AirSeal'as specifiedinsection3.1.2 backedbyaPEFrodto perimeteroftrimcavity
Flexibleflashingtape WANZsupportbar(notreq.forE2) Cavityventilationgap, width510mm
Flatpackerstosupportunit Sillmembraneasspecifiedin 3.1.5.4beneathwindow/ doortorunalongtheentire silland150mmdowninto cavityandmin.40mmup jambs
Thermalinsulation (indicativeonly,notrequiredfor weathertightness)
Waterproofcoatingor membraneasspecifiedin section3.1.5.3continuousat headandjambs Continuousheadandjambseal asspecifiedinsection3.1.2 backedbyaPEFrod Clearcavity,40mmmin Masonryveneer
Waterresistant'AirSeal' toperimeteroftrimcavity Flatpackerstosupportunit
Continuoussealasspecifiedin section3.1.1between masonryveneerandwindow frame,gapwidth510mm
Detail 15 Window - Head, Sill and Jamb Concrete Masonry Wall With Drained Cavity
Packer Silltray Silltoprovideminimum 10mmoverhang,with5mm drainageclearance (verticallyandhorizontally) Roofmembranetobe sealedandfixedtoslab beneathdoorsill Minimum100mmupstand tomembranearounddeck perimeter
Rigidroofinsulationcapableof takingpedestriantrafficloads Lineardrainagegrillalong lengthofdooropening. Alternatively,a12mmgap betweendeckandsillisrequired Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused) 100mm
Silltray&packers Roof/deckmembranefixedbelow window/doorframeandthresholdboard Timberthresholdboard Waterresistant'AirSeal'asspecifiedin section3.1.2backedbyaPEFrodto perimeteroftrimcavity
Minimum100mmupstandtomembrane arounddeckperimeter 45chamfertoinsulation 45chamfertoscreed Vapourbarrier Roofmembrane (doublelayerasspecifiedinsection6.5) Roofscreedtofalltoroofgullies, fall1.5
Comment 1: Refertodetail52fordecktypesandsetdownrequirements . Comment 2: Structural layout is indicative only and subject to individual project design.
Detail 16 Door Threshold at Deck, External Deck Insulation
Packer Silltray Silltoprovideminimum10mm overhang,with5mmdrainage clearance(verticallyandhorizontally) Roofmembranetobesealedand fixedtoslabbeneathdoorsill
Minimum100mm upstandtomembrane arounddeckperimeter
Lineardrainagegrillealong lengthofdooropening. Alternatively,a12mmgap betweendeckandsillisrequired Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused) 100mm
Silltray&packers Roofmembranefixed belowwindowframe Timberthresholdboard Waterresistant'AirSeal'as specifiedinsection3.1.2 backedbyaPEFrodto perimeteroftrimcavity
45chamfertoscreed Roofmembrane asspecifiedinsection6.5 Internalinsulation,strappingandlining (indicativeonly,notreq.forE2) Roofscreedtofalltoroofgullies, fall1.5
Detail 17 Door Threshold at Deck, Internal Deck Insulation
Withinsulationbeneathflashingtopreventcoldbridging DripprofiletomatchEIFS Sealasspecifiedin3.1.1 backedbyaPEFrod Compressionsealtofixroof flashingandroofunderlay Timberbattenbeneath compressionseal Metalroofflashingtobefixed withcompressionseal Roofunderlay,torunup50mm behindEIFSbaseprofile DPCtoseperatetimberandwall
Withoutinsulationbeneathflashing
Sealasspecifiedin3.1.1 backedbyaPEFrod DripprofiletomatchEIFS Compressionsealtofixroof flashingandroofunderlay Metalroofflashingtobe fixedwithcompressionseal 110mmmin.upstandonmetal roofflashing. Roofunderlay
EIFSasspecifiedinsection4.1
DripprofiletomatchEIFS Insulationatleast20mmthinnerthanmain EIFStoallowfordripprofile Compressionsealtofixroof flashingandroofunderlay Timberbattenbeneath compressionseal 110mm
0 13 mm 0 0 2
Upstandofflashingtobeatleast110mm fromcornertopenetrationofcompression seal Roofsheetingwithunderlaybeneath Lightweightroofconstructionas specifiedinE2/AS1
DPCstriptoseparatetimber fromconcrete Roofunderlay
Fixingofrafterssubjectto structuraldesignand indicativeonly
Minimumdimensions asspecifiedin E2/AS1,Table7
Comment: Structural layout is indicative only and subject to individual project design.
Detail 18 Wall/ Pitched Roof Junction: Apron Flashing Concrete Masonry, Insitu or Precast: EIFS
Dripprofile,metalorPVCangle(onlyforplaster) Chasetopanel510mmx20mmdeep Metaloverflashingtobechasedand sealedintowallwithsealantasspecifiedin section3.1.1.Securedwithselftappingscrew Profiledroofflashingandunderlaytorunup beneathoverflashingandtobemechanically fixedtowall. Allpenetratingfixingstobebeneathoverflashing
Weathertightnesssystemasspecifiedin section4.2,4.3,4.4or4.5 Finishingprofileincaseofexternalplaster Metaloverflashing tobechasedandsealedintowallwith sealantasspecifiedinsection3.1.1 Metalflashingtorunupbeneath overflashing 110mm Upstandofflashingtobeatleast110mm fromcornertotopofflashing/membrane Roofsheetingwithunderlaybeneath. Underlaytorunupwallandbesealed beneathoverflashing Lightweightroofconstructionas specifiedinE2/AS1
0 13 mm 0 20
Flashingsecuredwithself tappingscrew
Fixingofraftersubjectto structuraldesignand indicativeonly Internalinsulation/strapping andlining(indicativeonly, notrequiredfor weathertightness)
Detail 19 Wall/ Pitched Roof Junction: Apron Flashing Concrete Masonry, Insitu or Precast: Internal Insulation
Wall type: A1, A3, B1, C1
Chasetopanel510mmx20mmdeep DripprofiletomatchEIFS Metaloverflashingtobechasedand sealedintowallwithsealantaspecified insection3.1.1. Securedwithselftappingscrew Profiledroofflashingandunderlaytorun upbeneathoverflashingandtobe mechanicallyfixedtowall. Allpenetratingfixingstobebeneath overflashing
Weathertightnesssystemasspecifiedin section4.2,4.3,4.4or4.5
Chasetowalltobeminimum20mm deep Metaloverflashingtobechased andsealedintowallwithsealantas specifiedinsection3.1.1. Profiledroofflashingtorunup beneathoverflashing 110mm Upstandofflashingtobeatleast 110mmfromcornertotopof flashing/membrane Roofsheetingwithunderlay beneath Lightweightroofconstructionas specifiedinE2/AS1
Fixingofrafterssubject tostructuraldesignand indicativeonly ThermalInsulation (indicativeonly,notrequired forweathertightness)
Detail 20 Wall/ Pitched Roof Junction: Apron Flashing Insitu or Precast Walls: Integral Insulation
Masonryveneer Clearcavity,40mmmin ThermalInsulation (indicativeonly,notrequired forweathertightness)
Bricktie (designshownindicativeonly,couldalsobe castintotheinnermasonryjoints) Verticaljointstobeopen betweenbricksevery 800mmmax.toprovide ventilation/weepopenings of1000mm/mmin.
Membraneasspecified in3.1.5.4overinsulation wedgetoensurewater flowoutthroughweep holes,providestopends atlintelends DPCrunupbehindsteel angleandtimbersupport Roofunderlayrunupat least100mmbehindsteel angle Steelangletosupport brickveneer Sealasspecifiedin3.1.1 backedbyaPEFrod, betweensteelangleand compressionseal
Upstandofflashingtobeatleast 110mmfromcornerto penetrationofcompressionseal Roofsheetingwithunderlay beneath Roofunderlay Lightweightroofconstruction asspecifiedinE2/AS1
0 13 mm 2 00
Compressionsealtofix roofflashingandroof underlay Timbersupportbeneath compressionseal.Roof underlaymembrane,to runupandround timberbatten
Fixingofrafter subjecttostructural designandindicative only
Detail 21 Wall/ Pitched Roof Junction: Apron Flashing Concrete Masonry Cavity Wall: Cavity Insulation
OptionA: Scotiawithdripedge
OptionB: Sealantasspecifiedinsection3.1.1overPEFrod
Lightweightroofconstruction asspecifiedinE2/AS1
DPCundertopplate
Soffitframing Soffitliningboard OptionA:Scotiaprotectingplastertosoffitjoint,or OptionB:SealantoverPEFrod
DPCbehindsoffit framing
Concretewall. Insitu,precastor concrete masonry
Detail 22 Wall/ Pitched Roof: Eaves Junction Concrete Masonry, Precast or Insitu: EIFS
OptionB: Sealantasspecifiedinsection3.1.1
DPCbehindsoffit framing Soffitframing Soffitliningboard OptionA:Scotiaprotectingplastertosoffitjoint,or OptionB:Sealant Weathertightnesssystemasspecifiedin section4.2,4.3,4.4or4.5 Insulation/strapping andlining (indicativeonly, notrequiredfor weathertightness)
Detail 23 Wall/ Pitched Roof: Eaves Junction Concrete Masonry, Precast or Insitu: Internal Insulation
DPCbehindsoffit framing Soffitframing Soffitliningboard OptionA:Scotiaprotectingplastertosoffitjoint,or OptionB:Sealant Weathertightnesssystemasspecifiedin section4.2,4.3,4.4or4.5 Concretewallwith integralinsulation (insulationis indicativeonly, notrequiredfor weathertightness)
Detail 24 Wall/ Pitched Roof: Eaves Junction Precast or Insitu Wall: Integral Insulation
Ventilationgap Soffitframing Soffitliningboard Masonryveneer Clearcavity, 40mmmin Bricktie (designshownindicativeonly, couldalsobecastintotheinnermasonryjoints)
DPCtorun behindsoffit framing
Thermal insulation (indicativeonly, notrequiredfor weathertightness) Concretemasonry wall
Detail 25 Wall/ Pitched Roof: Eaves Junction Concrete Masonry Cavity Wall: Cavity Insulation
Soffitframing Soffitboard OptionA:Scotiaprotectingplastertosoffitjoint or OptionB:Sealant EIFSasspecifiedinSection4.1 DPCtoseparatetimberand concretewall
Concretewall:Concretemasonry, insituorprecast
Detail 26 Wall/ Pitched Roof Junction: Verge Detail Concrete Masonry, Precast or Insitu: EIFS
Soffitboardloweredanddepthoffascia extendedtotopofconcretewall (hereOptionA,scotia)
OptionB: Sealantasspecifiedin section3.1.1
Soffitframing Soffitboard Sealant
DPCtoseparatetimberand concretewall
Scotiaboardprotectingplastertosoffitjoint or forsoffitboardloweredtotopofconcrete walluseOptionAandB Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5
Internalinsulation,strappingand lining (indicativeonly, notrequiredforweathertightness)
Detail 27 Wall/ Pitched Roof Junction: Verge Detail Concrete Masonry, Precast or Insitu: Internal Insulation
Soffitframing Soffitboard Sealantoverbackingrod Scotiaboardprotectingplastertosoffitjoint or forsoffitboardloweredtotopofconcrete walluseOptionAandB
Compositeinsituorprecastwallwithintegral insulation(insulationisindicativeonly,notrequired forweathertightness) Weathertightnesssystemasspecified insection4.2,4.3,4.4,or4.5
Detail 28 Wall/ Pitched Roof Junction: Verge Detail Insitu or Precast: Integral Insulation
Soffitframing Soffitliningboard
Ventilationgap
Masonryveneer Clearcavity, 40mmmin Thermalinsulation (indicativeonly,notrequiredforweathertightness) Bricktie (designshownindicativeonly, couldalsobecastintotheinnermasonryjoints)
Detail 29 Wall/ Pitched Roof Junction: Verge Detail Concrete Masonry Cavity Wall: Cavity Insulation
Rrofmembraneasspecifiedinsection6.5, ifmembraneisnotUVresistantaprotectionlayer orpebblesshallbeappliedontopofthemembrane slaboradditionalscreedslopedtoroofoutlets,=1.5
(thermalroofinsulationappliedunderneathslab orinceilingvoid (isulationisindicativeonly,notreq.forE2)
Detail 30 a.
Flat roof general built up, internal insulation (not to scale)
Rrofmembraneasspecifiedinsection6.5,torched overbottommembrane. IfmembraneisnotUVresistantaprotectionlayer orpebblesshallbeappliedontopofthemembrane Doublelayermembraneasspecifiedinsection6.5 Rigidinsulationcapableofcarryingpedestriantrafficloads
Vapourbarrierasspecifiedinsection6.4.1,tokeep insulationdryfromvapourgeneratedinsidethebuilding slaboradditionalscreedslopedtoroofoutlets,=1.5
Detail 30 b.
Flat roof general built up, external insulation (not to scale)
BALUSTRADESTANCHIONFIXINGDETAIL Balustrade stanchionwithside fixingbracket. (Slightslopetobase ofbrackethelps directwateraway fromjunction) Baseplatefor balustrade stanchionto terminateon externalsideof membrane.
Connectingsteel bracketfixedto upstand,with projectingboltsto penetratemembrane Allpenetrationsfor balustradefixingsto bemin.150mmabove roofmembranelevel
Profiledparapetcapping clippedtosteelbrackets. Jointsincappingshallbe lappedandsealed
5degreeeminimum angletotopofcapping Doublelayermembrane asspecifiedinsection 6.5 NonUVresistant membranescanbeused whenballast,paversor othercoveringlayers protectthemembrane
Bracketfixedovertimber wedge
Parapetdriplinetoproject 2540mmfromfaceofwall topreventstaining
Membranetolapover parapetandextenddown thefaceatleast30mm
45Chamferedscreed
EIFSasspecifiedin Section4.1
min.150 mm
Vapourbarrierasspecifiedin section6.4.1 Slaboradditionalroofscreedto falltoroofgullies,min.fall1.5 Concreteroofslab
Detail 31 (not to scale) Parapet with Profiled Capping Concrete masonry, insitu or precast with external insulation
BALUSTRADESTANCHIONFIXINGDETAIL
Balustradestanchionwith sidefixingbracket.(Slight slopetobaseofbracket helpsdirectwateraway fromjunction) Baseplateforbalustrade stanchiontoterminateon externalsideofmembrane.
Allpenetrationsfor balustradefixingsto bemin.150mmabove roofmembranelevel
Shapedinsulationcap,fixed toconcretewall,aspartof EIFSsystem.
10degreeeminimumangle totopofcapping Roofmembranetorunup totopofconcrete DripprofiletomatchEIFS 50mm Doublelayermembraneas specifiedinsection6.5 NonUVresistant membranescanbeused whenballast,paversor othercoveringlayers protectthemembrane
Additionalweathertightness asspecifiedinsection4.2.3 50mm
45Chamferedscreed Vapourbarrierasspecifiedin section6.4.1 Slaboradditionalscreedto falltoroofgullies, min.fall1.5 Concreteroofslab Concretewall: concretemasonry,insitu orprecast
Detail 32 (not to scale) Parapet with Integral Capping, Option A Concrete Masonry, Insitu or Precast: External Insulation
Connectingbracketfixedto upstand,withprojectingboltsto penetratemembrane Allpenetrationsfor balustradefixingsto bemin.150mmabove roofmembranelevel
10degreeeminimumangle totopofcapping
Timbertosupportcompressionseal Drip/baseprofileofEIFSsystem Membranetobefixed/sealedto wallwithcompressionseal 50mm Doublelayermembraneas specifiedinsection6.5 NonUVresistantmembranescan beusedwhenballast,paversor othercoveringlayersprotectthe membrane
Additionalweathertightness asspecifiedin4.2.3 50mm
Insulatedupstandtofully insulateparapetandprevent coldbridging 45Chamferedinsulationwedge EIFSasspecifiedin Section4.1
45Chamferedscreed Vapourbarrierasspecifiedin6.4.1 Slaboradditionalscreedto falltoroofgullies, min.fall1.5 Concreteroofslab Concretewall: concretemasonry,insitu orprecast
Detail 33 (not to scale) Parapet with Integral Capping, Option B Concrete Masonry, Insitu or Precast: External Insulation
Profiledparapetcapping clippedtosteelbrackets. Jointsincappingshallbelapped andsealed Bracketfixedovertimber wedgetoprovideslopetoroof DPCtoseparatesteeland timber
5degreeeminimumangle totopofcapping
Roofmembraneasspecifiedin section6.5 min.150 mm NonUVresistantmembranes canbeusedwhenballast, paversorothercovering layersprotectthemembrane
Parapetdriplinetoproject 2540mmfromfaceofwall Roofmembranetolapover parapetandextenddowntheface atleast30mm 45Chamferedscreedatinternal corner Roofscreedtofalltoroof gullies,minfall1.5 Concreteroofslab Concretewall: concretemasonry,insituor precast Weathertightnesssystemas specifiedinsection 4.2,4.3,4.4or4.5.
Internalinsulation,strapping andlining(indicativeonly, notrequiredfor weathertightness)
Detail 34a Parapet with Profiled Capping, Option A Concrete Masonry, Insitu or Precast: Internal Insulation
Timberwedgetoprovideslope downtoroof.Optionalwithout timberifslopecanbeprovidedby topofwall DPCtoseparatetopofparapet andflashing 50mm
Continuousprofiledparapet capping.
Roofmembraneasspecifiedin section6.5 NonUVresistantmembranes canbeusedwhenballast, paversorothercovering layersprotectthemembrane
Cappingsecuredwith selftappingscrew Membranetolapover parapetbeneathcapping,and feedouttoexternalwallface atleast50mmdown 45Chamferedscreedatinternal corner Roofscreedtofalltoroof gullys,minfall1.5 Concreteroofslab Concretewall: concretemasonry,insituor precast Weathertightnesssystemas specifiedinsection 4.2,4.3,4.4or4.5.
Detail 34b Parapet with Profiled Capping, Option B Concrete Masonry, Insitu or Precast: Internal Insulation
Balustradestanchionwith sidefixingbracket.(Slight slopetobaseofbracket helpsdirectwateraway fromjunction) Baseplateforbalustrade stanchiontoterminateon externalsideof membrane.
Dripprofile,metalorPVCangle Metaloverflashingsealedintowall chase,20mmdeep,10mmheight. Sealantasspecifiedin3.1.1 Membranetorchedontoconcrete upstand Cappingsecuredwithselftappingscrew
45Chamferedscreed Slaborscreedtofalltoroof gullies,minfall1.5 Concreteroofslab Concretewall
Weathertightnesssystemas specifiedinsection 4.2,4.3,4.4or4.5(alsocovertopof parapet)
Roofmembraneasspecified insection6.5 NonUVresistantmembranescanbe usedwhenballast,paversorother coveringlayersprotectthemembrane
Detail 35 Parapet of Insitu or Precast Wall Internal Wall and Roof Insulation
Profiledparapetcapping clippedtosteelbrackets Jointsincappingshallbe lappedandsealed Bracketfixedovertimber wedgetoprovideslopedown toroof Membranetolapover parapetandextenddown thefaceatleast30mm Parapetdriplinetoproject 2540mmfromfaceofwall topreventstaining DPCorextendedroofvapour barriertoseparateconrete wallandtimberwedge 45Chamferedinsulation 45Chamferedscreed Vapourbarrierasspecifiedin section6.4.1 Slaborscreedtofalltoroofgullies, min.fall1.5 Concreteroofslab Compositeinsituorprecastwall withintegralinsulation(insulationis indicativeonly,notreq.forE2) Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5.
5degreeeminimum angletotopofcapping
Doublelayermembraneas specifiedinsection6.5 min.150mm NonUVresistantmembranes canbeusedwhenballast,pavers orothercoveringlayersprotect themembrane
Detail 36a Parapet with Profiled Capping, Option A Insitu or Precast Wall: Integral Insulation
Timberwedgetoprovideslope downtoroof.Optionalwithout timberifslopecanbeprovidedby topofwall Continuousprofiledparapet capping. Cappingsecuredwith selftappingscrew
Membranetosealover parapetbeneathcapping, andfeedouttoexternal wallface DPCtoseparateconrete wallandtimberwedge 45Chamferedinsulationwedge 45Chamferedscreed Vapourbarrierasspecifiedin section6.4.1 Slaborscreedtofalltoroofgullies, min.fall1.5 Concreteroofslab Compositeinsituorprecsastwall withintegralinsulation(insulation isindicativeonly,notreq.forE2) Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5.
Detail 36b Parapet with Profiled Capping, Option B Insitu or Precast Wall: Integral Insulation
Chase510mmheightx20mmdeep Metaloverflashingtobechased andsealedintowallwithsealantas specifiedinsection3.1.1 Cappingsecuredwith selftappingscrew Allpenetrationsforbalustrade fixingstobemin.150mm aboveroofmembranelevel Balustradestanchion withsidefixingbracket. (Slightslopetobaseof brackethelpsdirect waterawayfrom junction) Baseplatefor balustradestanchion toterminateon externalsideof membrane.
10minimumangletotop ofcapping Sealantasspecifiedin3.1.1 Metaloverflashingtobesealed withsealantasspecifiedin3.1.1 intochaseinwall Membranetorchedontoconcrete upstand 70mm Doublelayermembraneas specifiedinsection6.5 NonUVresistantmembranescan beusedwhenballast,paversor othercoveringlayersprotectthe membrane
Cappingasintegralpartof precastunit Closedcellfoam(notreq. forE2)toisolateouterfrom innerconcretelayers
Detail 37 Parapet of composite Insitu or Precast Wall (Wall with Integral Insulation)
Profiledparapetcappingclipped tosteelbrackets. Jointsincappingshallbelapped andsealed Bracketfixedovertimber wedgetoprovideslopeto roof DPCseparationofsteel totimber Parapetdriplinetoproject 2540mmfromfaceofwall Ventilationholes toprovide1000mm/mmin. Weepholestobeopen verticaljointbetweenbricks every800mmmax. 45Chamferedscreedat internalcorner Masonryveneer Bricktie (designshownindicativeonly,could alsobecastintotheinnermasonry joints) Clearcavity,40mmmin Thermalinsulation (indicativeonly,notrequiredforE2)
5degreeeminimumangle totopofcapping Roofmembraneasspecifiedin section6.5 min.150 mm NonUVresistantmembranes canbeusedwhenballast, paversorothercovering layersprotectthemembrane
Slaborscreedtofalltoroofgullies, fall1.5min.
Concreteroofslab
Internalinsulation,strappingandlining (notrequiredforweathertightness)
Detail 38 Parapet with Profiled Capping Concrete Masonry Cavity Wall: Cavity Insulation
Doublelayermembraneas specifiedinsection6.5 NonUVresistantmembranes canbeusedwhenballast, paversorothercoveringlayers protectthemembrane
Roofgully(proprietary drainagegullyaspartofroof drainagesystem) Roofmembranestooverlap andtobesealedontoroof outletflange Vapourbarrierasspecifiedin 6.4.1tooverlapandtobe sealedtoroofgullyflange
Thermalroofinsulation
Slaborscreedtofalltoroofgullies, fallmin1.5dgr.
Comment1:Roofgulliestobelocatedatlowestpointsofroof Comment2:Atleasttworoofoutletsrequiredforeachflatroofsection Comment3:Structurallayoutisindicativeonlyandsubjecttoindividualprojectdesign
Detail 39 Roof Gully Concrete Roof/ Deck with External Insulation
Roofmembraneasspecifiedin section6.5 NonUVresistantmembranes canbeusedwhenballast, paversorothercoveringlayers protectthemembrane
Roofgully(proprietary drainagegullyaspartof roofdrainagesystem) Roofmembranestooverlap andtobesealedontoroof outletflange
Slaboradditional screedtofallto roofgullies, fallmin.1.5 Concreteroofslab
Insulationand Strappingandlining orsuspendedceilingwiththermal insulation(indicativeonly,not requiredforweathertightness)
Detail 40 Roof Gully Concrete Roof/ Deck with internal insulation
Proprietaryroofdome/AOV, withprefabricatedupstands andthermallyinsulatedframe
Doublelayermembraneas specifiedinsection6.5 NonUVresistant membranescanbeused whenballast,paversor othercoveringlayers protectthemembrane
Minimummembrane upstandof150mm abovefinished rooflevel 150mm Membraneshall extendtounderside offrameoverhang/ dripedgeofroof accessunit 45degrees chamferto insulation
Thermalinsulation Vapourbarrierasspecified insection6.4.1 Slaborscreedtofalltoroof gullies,fallmin.1.5 Roofslab
Detail 41 Roof Penetration (Light Dome/ AOV/ Hatch) Concrete Roof/ Deck with External Insulation
Minimummembrane upstandof150mm abovefinished rooflevel 150mm
Membraneshall extendtounderside offrameoverhang/ dripedgeofroof accessunit
Slaborscreedtofalltoroof gullies,fallmin.1.5 Concreteslab Insulationand Strappingandlining orsuspendedceilingwiththermal insulation(indicativeonly,not requiredforweathertightness)
Detail 42 Roof Penetration (Light Dome/ AOV/ Hatch) Concrete Roof/ Deck with Internal Insulation
DripprofiletomatchEIFS Compressionsealto fixroofmembrane Minimum150mm membrane upstandaround deckperimeter
DripprofiletomatchEIFS Membranestorunbehind EIFSforatleast50mm 150mm Minimum150mm membraneupstand arounddeckperimeter
OptionA Upstandinsulationto reducecoldbridging
OptionB Upstanduninsulated
EIFSasspecifiedinsection4.1 DripprofiletomatchEIFS Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused) 150mm 100mm
Timbersupportbeneathmembrane fixing.Roofunderlaymembrane, torunupandroundtimberbatten
Membranetorunupatwallforat least50mmbehindEIFS Fromtopofinteriorfinishedfloorto topofhorizontalroofmembrane
Insulationwedgetointernal cornerofmembrane 45chamfertoscreed Slaborscreedtofalltoroof gullys,min.fall1.5
Doublelayermembraneasspecifiedin section6.5 Rigidroofinsulationcapableoftaking pedestriantrafficloads Vapourbarrierasspecifiedin6.4.1
Comment1:Refertodetail51fordecktypesandsetdownrequirements Comment2:Structurallayoutisindicativeonlyandsubjecttoindividualprojectdesign.
Detail 43 (not to scale) Roof/ Deck at Wall: Externally Insulated Deck Concrete Masonry, Precast or Insitu Wall: External Insulation
Sealantasspecifiedin3.1.1 inchaseof510x20mm Overflashingtobechasedand sealedintowall 70mm Roofmembranestorunup 150mmandtorchedontowall 150mm 20mm
Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5 Dripprofile,onlyrequiredfor plasterfinish Metaloverflashingtobechasedand sealedintowallwithsealeras specifiedin3.1.1 Roofmembranestorunup 150mmandtorchedontowall
Minimum12mmgap betweeenwallanddeck atperimeter
Internalinsulation, strappingandlining (indicativeonly,notreq.forE2)
EXTERIOR Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused)
Incaseofconcretemasonry, optionallyrebateof25100mm Fromtopofinteriorfinished floortotopofhorizontalroof membrane
Insulationwedgetointernal cornerofmembrane 45chamfertoscreed Doublelayermembraneasspecifiedin section6.5 Rigidroofinsulationcapableoftaking pedestriantrafficloads Vapourbarrierasspecifiedin6.4.1 Roofscreedtofalltoroof gullies,min.fall1.5
Detail 44 (not to scale) Roof/ Deck at Wall: Externally Insulated Deck Concrete Masonry, Precast or Insitu Wall: Internal Insulation
Sealantasspecifiedin3.1.1 inchaseof510x20mm Overflashingtobechasedand sealedintowall Roofmembranetorunup 150mmandtorchedontowall Min.12mmdrainagegapbtw. wallanddeckatperimeter
Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5
Overflashingtocovermembrane sealing
Compositeinsituorprecastwall withintegralinsulation (insulationisindicativeonly, notreq.forE2)
Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused) 150mm 100mm
Roofmembranestorunup 150mmandtorchedontowall
Fromtopofinteriorfinishedfloorto topofhorizontalroofmembrane
Insulationwedgetointernal cornerofmembrane 45chamfertoscreed Roofscreedtofalltoroof gullys,fall=1.5
Precastpanelplacedon mortarandpackerstosuit (notrequiredforinsitu)
Detail 45 Roof/ Deck at Wall: Externally Insulated Roof Precast or Insitu Wall: Integral Insulation
Vapourbarriertorunup behindsteelangle DPCwithinsulation wedgebelowtoflash baseofcavity Weep/ventholes Compressionsealfor roofmembrane
Masonryveneer Clearcavity,40mmmin Bricktie
(designshownindicativeonly,couldalso becastintotheinnermasonryjoints)
Thermalinsulation (indicativeonly, notreq.forE2) Concretemasonrywall
Verticaljointstobeopen betweenbricksevery 800mmmax.toprovide ventilation/weep openingsof 1000mm/mmin. Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused) 150mm 100mm
DPCtobaseofcavity,setoninsulationwedge, todirectcavitydrainagethroughweepholes Vapourbarriertorunupbehindsteelangle Steelangletosupportbrickveneer Roofmembranestorunup150mmandfixed towallbycompressionseal Timbersupportbetweencompressionseal andwall.Roofmembranetorunovertopof timberbatten Optionalrebateof25100mm Fromtopofinteriorfinishedfloorto topofhorizontalroofmembrane
Insulationwedgetointernalcornerof membrane 45chamfertoscreed Roofscreedtofalltoroofgullies,min.fall1.5
Detail 46 Roof/ Deck at Wall: Externally Insulated Roof Concrete Masonry Cavity Wall: Cavity Insulation
Roofmembraneto runupbehindEIFS atleast50mmand torchedontowall Minimum150mm membraneupstand arounddeckperimeter
EIFSasspecifiedinsection4.1 DripprofiletomatchEIFS
DripprofiletomatchEIFS
Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused) 150mm
Minimum150mmupstandtomembrane arounddeckperimeter Incaseofconcretemasonry, optionalrebateof25100mm 100mm
Fromtopofhorizontalroofmembrane totopofinternalfinishedfloor
45chamfertoscreed Roofscreedtofalltoroofgullies,min.fall1.5 Internalinsulation (indicativeonly,notrequiredfor weathertightness)
Roofmembraneasspecifiedin section6.5.
Comment1:Refertodetail52fordecktypesandsetdownrequirements Comment2:Structurallayoutisindicativeonlyandsubjecttoindividualprojectdesign.
Detail 47 (not to scale) Roof/ Deck at Wall: Internally Insulated Roof Concrete Masonry, Precast or Insitu Wall: External Insulation
Sealantasspecifiedin3.1.1 inchaseof510x20mm Overflashingtobechasedand sealedintowall Roofmembranetorunup 150mmandtorchedontowall Min.12mmdrainagegapbtw. wallanddeckatperimeter 150mm 70mm
Weathertightnesssystemasspecified insection4.1,4.2,4.3,4.4or4.5
Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused)
Roofmembranetorchedontowall
Minimum150mmupstandto membranearounddeckperimeter Optionalrebateof25100mm 100mm
45chamfertoscreed Roofscreedtofalltoroofgullies,min.fall 1.5 Internalinsulation (indicativeonly,notrequiredfor weathertightness)
Roofmembraneasspecifiedinsection6.5
Detail 48 (not to scale) Roof/ Deck at Wall: Internally Insulated Roof Concrete Masonry, Precast or Insitu Wall: Internal Insulation
Sealantasspecifiedin3.1.1 inchaseof510x20mm Overflashingtobechasedand sealedintowall Roofmembranetorunup 150mmandtorchedontowall Min.12mmdrainagegapbtw. wallanddeckatperimeter 70mm
Compositeinsituorprecsastwall withintegralinsulation (insulationisindicativeonly, notreq.forE2)
Roofmembranetorunup 150mmandtorchedontowall
45chamfertoscreed Precastpanelplacedonmortarand packerstosuit (notrequiredforinsitu) Roofmembraneasspecifiedin section6.5. Roofscreedtofalltoroofgullies, min.fall1.5 Internalinsulation (indicativeonly,notrequiredfor weathertightness)
Detail 49 Roof/ Deck at Wall: Internally Insulated Roof Precast or Insitu Wall: Integral Insulation
Vapourbarriertorunupbehindsteelangle DPCwithinsulationwedgebelowtoflash baseofcavity. Weepholes Roofmembranetorchedontowall
Masonryveneer Clearcavity,40mmmin Thermalinsulation (indicativeonly, notreq.forE2) Bricktie
(designshownindicativeonly,couldalsobecast intotheinnermasonryjoints)
Verticaljointstobeopen betweenbricksevery800mm max.toprovideventilation/ weepopeningsof 1000mm/mmin. Tiledecking on Chairson membraneprotection pads, (padsnotreq.if pebblebedused)
DPCtobaseofcavity,setoninsulationwedge, todirectcavitydrainagethroughweepholes Vapourbarriertorunupbehindsteelangle Steelangletosupportbrickveneer Metaloverflashingtobechased andsealedintowall.Sealantas specifiedin3.1.1 Roofmembranestorchedonto wallandrunbehindveneerwall foratleast50mm Optionalrebateof25100mm 150mm 100mm 100mm
Fromtopofinteriorfinishedfloor totopofhorizontalroofmembrane
Detail 50 Roof/ Deck at Wall: Internally Insulated Roof Concrete Masonry Cavity Wall: Cavity Insulation
Structuralpaversortilesonchairs min.5mm Proprietary chair supports 150mm 100mm 12mm
PaversonChairSupports
Roofmembraneasspecifiedin section6.5
Timberdeckingtobescrewfixedor panelisedforremovalandaccess.
TimberDeckingandFraming
min.5mm 150mm 100mm 12mm
Timberdeckframingtoconform torequirementsofE2AS1
Timberpackersonisolationpads Roofmembraneasspecifiedin section6.5
Pavers Packedbedofroundedpebbles (min50mmdia) 150mm min.10mm 100mm
PaversonRoundedPebble DrainageLayer
Comment1:Whereacleargapofatleast12mmbetweentheraiseddeckingandthewallisprovided,the deckcanbelevelwithinternalfloor(providedthelevelofthewaterproofinglayerismin100mmbelow floorlevel).Wherewatermaycollectonthedecksurface,thedeckshouldbemin100mmbelowinternal floorlevel. Amin.150mmupstandoftheroofmembranewithnopenetrationsatallrooftowallandparapet junctions(exceptatthresholdsthiscanbereducedto100mm)isalsorequired. Comment2:A12mmperimetergapisrequiredbetweenedgeofdeckandwallsurface Comment3:RooforDecktowalljunctionsandmembranespecificationsarespecifiedinDetails43to50
Detail 51 Decking Options External Roof Insulation
Roofmembraneasspecifiedin section6.5 Internalinsulation (indicativeonly, notrequiredforweathertightness)
Timberpackersonisolationpads Roofmembraneasspecifiedin section6.5 Internalinsulation (indicativeonly, notrequiredforweathertightness)
Pavers Packedbedofroundedpebbles (min50mmdia) min.10mm
Detail 52 Decking Options Internal Roof Insulation
Sealantasspecifiedin 3.1.1overPEFrod
Sealantas specifiedin 3.1.1over PEFrod
pipe,slopedowntoexterior
Slopeof wall openingto exterior 1.5
Detail 53 Penetration Through Wall Concrete Masonry, Insitu or Precast wall: EIFS
INTERIOR Thermal insulation (indicativeonly, notrequiredfor weathertightness)
Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5 Sealantas specifiedin 3.1.1over PEFrod
Detail 54 (not to scale ) Penetration Through Wall Concrete Masonry, Insitu or Precast wall: Internal Insulation
INTERIOR Thermal insulation (indicativeonly, notrequiredfor weathertightness) Sealantas specifiedin 3.1.1over PEFrod
Compositeinsituorprecsast wallwithintegralinsulation (insulationnotreq.forE2)
Detail 55 Penetration Through Wall Insitu or Precast wall: Integral Insulation
EXTERIOR Masonryveneer Clearcavity, 40mmmin Bricktie
(designshown indicativeonly, couldalsobecast intotheinner masonryjoints)
Thermal insulation (indicativeonly, notrequiredfor weathertightness) Concrete masonrywall
pipe,slopedowntoexterior,min1.5
Detail 56 Penetration Through Wall Concrete Masonry Cavity Wall: Cavity Insulation
INTERIOR Membrane asspecified insection 3.1.7.3 continuous atheadand jambs Continuous headandjamb sealover PEFbackingrod. Sealantas specifiedin section3.1.1
EIFSasspecified insection4.1 DripprofiletomatchEIFS Serviceboxcoverflashing
Timber framing with insulation infill
Serviceboxdripsection EIFSfinishingprofile Membraneasspecifiedin3.1.7.4torun alongtheentiresill,downthefaceto overlapEIFSfinishingprofileformin. 30mmandmin.40mmupjambs
Sealantas specifiedin 3.1.1 overPEF backingrod
Detail 57a Service Box Set Into Wall Concrete Masonry: EIFS
INTERIOR Membraneas specifiedinsection 3.1.7.3 continuousathead andjambs
EIFSasspecified insection4.1 Dripprofile tomatchEIFS Servicebox coverflashing
Continuous headandjamb sealover PEFbackingrod
Servicebox dripsection
Finishingprofile tomatchEIFS
Membraneasspecified in3.1.7.4torunalong theentiresill,down thefacetooverlap EIFSfinishingprofile formin.30mmand min.40mmupjambs
Detail 57b Service Box Set Into Wall Precast or Insitu: EIFS
Weathertightnesssystem asspecifiedinsection 4.2,4.3,4.4or4.5 Dripsection,forplasteronly
Continuousheadand jambsealover PEFbackingrod. Sealantasspecified insection3.1.1
Sealantas specifiedin3.1.1 overPEFbacking rod
Serviceboxdripsection
Membraneas specifiedin3.1.7.4 torunalongthe entiresill,downthe facetooverlap weathertightness systemformin. 30mmandmin. 40mmupjambs
Comment 1: Structural layout is indicative only and subject to individual project design. Comment 2: Insulation shown is indicative only, not required for weathertightness.
Detail 58a Service Box Set Into Wall Concrete Masonry: Internal Insulation
Weathertightnesssystem asspecifiedinsection 4.2,4.3,4.4or4.5
Membraneas specifiedin section3.1.7.3 continuousat headandjambs
Continuousheadand jambsealover PEFbackingrod. Sealantasspecified insection3.1.1 Internal insulation/ strappingand lining (indicativeonly, notrequiredfor weathertightness)
Membraneas specifiedin3.1.7.4 torunalongthe entiresill,down thefaceto overlap weathertightness systemformin. 30mmandmin. 40mmupjambs
Detail 58b Service Box Set Into Wall Insitu and Precast: Internal Insulation
EXTERIOR Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5 Closedcellfoam(notreq.forE2) toisolateouterfrominner concretelayers
Sealantas specifiedin3.1.1 Membraneas specifiedin3.1.7.4 torunalongthe entiresill,downthe facetooverlap weathertightness systemformin. 30mmandmin. 40mmupjambs
Topofpaneltoslope atleast5dgr.
Detail 59 Service Box Set Into Wall Precast or Insitu Wall: Integral Insulation
INTERIOR Insulation (indicativeonly,not requiredfor weathertightness) Membraneas specifiedin3.1.7.4 toensurewater flowoutthrough weepholes Steelangleto supportbrick veneer
Masonryveneer Bricktie
(designshownindicativeonly, couldalsobecastintotheinner masonryjoints)
Clearcavity Verticaljointstobe openbetweenbricks every800mmmax.to provideventilation/ weepopeningsof 1000mm/mmin.
Continuoushead andjambseal overPEFbacking rod.Sealantas specified insection3.1.1
Sealantasspecified in3.1.1overPEF backingrod Membraneas specifiedin3.1.7.4 torunalongthe entiresill,downinto thecavityforatleast 150mmandmin. 40mmupjambs
Detail 60 Service Box Set Into Wall Concrete Masonry, cavity wall
Sealantasspecifiedin section3.1.1.Chase topanel 510mmx20mm
Sealantasspecifiedin3.1.2 overPEFrod Wallunderlayasspecified inE2/AS1
Lightweightwall asspecifiedinE2/AS1 70mm 50mm
Chase 20mm
Flashingwithfoldededge tobechasedandsealed intoconcrete Sealantasspecifiedin 3.1.1 1020mm Trimprofile tomatchEIFS
Detail 61 Concrete Wall Adjoining Other Wall Construction EIFS
Sealantasspecifiedin section3.1.1.Chase topanel 510mmx20mm INTERIOR
Wallunderlayasspecified inE2/AS1
Lightweightwall asspecifiedinE2/AS1 70mm
Flashingwithfoldededgetobe chasedandsealedintoconcrete Chase 20mm Sealantasspecifiedin3.1.1 overPEFrod Trimprofile(onlyforplaster)
1020mm Weathertightnesssystemas specifiedinSection4.2,4.3,4.4or4.5
Detail 62 Concrete Wall Adjoining Other Wall Construction Internal Insulation
Continuoussealasspecifiedin3.1.2 backedbyPEFrod
Lightweightwalltobeplacedafter concretewallhasbeenplaced WallunderlayasspecifiedinE2/AS1
Lightweightwall construction,referto E2/AS1
Weathertightnesssystemas specifiedinSection 4.2,4.3,4.4or4.5
70mm 1020mm
Flashingwithfoldededgetobefixedvia timberbattenandsealedagainst concrete Sealantasspecifiedin3.1.1overPEFrod Timberbattentoformdistancebetween flashingandconcrete.Timberseparated fromconcreteandDPCflashing
Detail 63 Concrete Wall Adjoining Other Wall Construction Integral Insulation
Continuoussealasspecifiedin3.1.2 backedbyPEFrod WallunderlayasspecifiedinE2/AS1
min.30mm
Flashingwithfoldededgeto befixedtostudandsealed againstbrickveneer Sealantasspecifiedin3.1.1 overPEFrod
Masonryveneertobeplaced afterlightweightwallhas beenconstructed
Detail 64 Concrete Wall Adjoining Other Wall Construction Cavity Insulation
Externalcladdingoflightweightstructure Wallunderlay Wallunderlaytolapovercontinuousmetal flashingatleast70mm Continuousmetalflashing clipfixedoversteelbracket, slopeofflashingmin.10
LightweightwallasspecifiedinE2/AS1 (directfixedorcavitywall) DPCtoseparatesteelbracketandtimber Steelbracketevery600mm,boltedtoslab Timberstructuretoprojectoverslabedgemax.20mm DPCtoseparatetimberandslab
105mm 35 70mm
20 EIFSasspecifiedinsection4.1
Concreteslab Concretewall
Detail 65 (vertical section) Concrete Wall adjoining other material above. Concrete Masonry, Precast or Insitu: EIFS
Externalcladdingoflightweightstructure Wallunderlay
LightweightwallasspecifiedinE2/AS1 (directfixedorcavitywall) Timberstructuretoprojectoverslabedgemax.20mm
DPCtoextenddownandoverlapthewall weathertightsystembyatleast30mm 70
DPCtoseparatetimberandslab
Concreteslab 30 Concretewall
Detail 66 (vertical section) Concrete Wall adjoining other material above. Concrete Masonry, Precast or Insitu: Internal Insulation
Wallunderlay Wallunderlaytolapovercontinuousmetal flashingatleast70mm 105mm 35 70mm Continuousmetalflashing clipfixedoversteelbracket, slopeofflashingmin.10 DPCtoextenddownand overlapthewallweathertight systembyatleast30mm Weathertightnesssystemasspecified insection4.2,4.3,4.4or4.5
LightweightwallasspecifiedinE2/AS1 (directfixedorcavitywall) DPCtoseparatesteelbracketandtimberand sealedovertopofweathertightnesssystem Steelbracketevery600mm,boltedtoslab Timberstructuretoprojectoverslabedgemax.20mm DPCtoseparatetimberandslab
Detail 67 (vertical section) Concrete Wall adjoining other material above. Insitu or Precast Wall: Integral Insulation
Wallunderlay Wallunderlaytolapovercontinuousmetal flashingatleast70mm Continuousmetalflashing clipfixedoversteelbracket, slopeofflashingmin.10 Cavityventilationgapofatleast 10mmatnarrowestsection 50 Bricktie
(designshownindicativeonly, couldalsobecastintothe innermasonryjoints)
LightweightwallasspecifiedinE2/AS1 (directfixedorcavitywall) DPCtoseparatesteelbracketandtimber Steelbracketevery600mm,boltedtoslab 35 70mm 105mm Timberstructuretoprojectoverslabedgemax.20mm DPCtoseparatetimberandslab
Masonryveneer ClearCavity,40mmmin Thermalinsulation
DPCtoextenddownand overlaptheinsulationbyat least30mm Concretemasonrywall
Detail 68 (vertical section) Concrete Wall adjoining other material above. Concrete Masonry Cavity Wall: Cavity Insulation
Sealantasspecifiedin3.1.1 overPEFrod(Incaseof precast,internaljoint asperdetail69c) INTERIOR
Sealantasspecifiedin 3.1.1overPEFrod toexandinterior
EXTERIOR EIFSas specified in4.1 Flexibleplastic PVCcontroljoint
Detail69dHorizontalPanelJoint: Precast,verticalsection
Appliesalsotointernalandintegral insulation. Jointdoesnotshowininternalinsulation.
820mm INTERIOR
Detail69aVerticalcontrolJoint: EIFS,horizontalsection
Plaster PVCtrim
Sealantasspecifiedin3.1.1 overPEFrodtoexandinterior
Sealantas specifiedin3.1.1 overPEFrod toexandinterior
EXTERIOR PVCtrim,onlyin caseofplaster
Detail69bVerticalcontrolJoint: Plasteredmasonrywall, horizontalsection
Appliesalsotointernalandintegralinsulation. Jointdoesnotshowininternalinsulation.
Sealantasspecifiedin 3.1.1overPEFrodto exandinterior
Detail69eVerticalcontrolJoint: Insituwithweathertightnessystem 4.2,4.3,4.4and4.5,horizontalsection Jointsareplannedforcracks
Detail69cVerticalcontrolJoint: precastwall,horizontalsection
EIFSas specified in4.1
Detail69fVerticalcontrolJoint: InsituwithEIFS,horizontalsection Jointsareplannedforcracks
EXTERIOR Flexibleplastic PVCcontroljoint
Comment1:alljointstobeprimed priortosealant installation
Comment2:allsealantjointstobe sized2:1(widthequals twotimesdepth)
Comment3:drawingsarenottoscale
For the purposes of New Zealand Building Code (NZBC) compliance, the Standards and documents referenced in this Code of Practice shall be the editions, along with their specific amendments, listed below. Where these primary reference documents refer to other Standards or documents (secondary reference documents), which in turn may also refer to other Standards or documents, and so on (lower-order reference documents), then the version in effect at the date of publication of this document shall be used.
AS/NZS 1170: 2002 AS/NZS 2728: 2007 Structural Design Actions Prefinished/ prepainted sheet metal products for interior/ exterior building applications - Performance requirements Guide to the painting of buildings Concrete Structures Standard Specification for Concrete Production Concrete Construction Where quoted in CCANZ CP 01: 2011 1.1.1, 1.4, 3.3.1, 3.4.1, 4.1, 4.5, 6.2, 6.4, 7.6 5.1.2
AS/NZS 2311:2000 NZS 3101: 2006 NZS 3104: 2003 NZS 3109: 1997
3.3.3, 3.4.3 1.1.4, 2.1, 2.2, 3.3.1, 3.3.2, 3.4.1,3.4.2, 6.2, 7.6 3.3.2, 3.4.2, 4.5 1.1.4, 3.3.1, 6.2 4.5.1 3.3.3, 3.4.3, 6.3 6.11.2 3.2.9.6, 5.1.2, 7.1 2.2, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 6.2 3.1.5 1.1.1, 1.1.3, 1.2.2, 3.2.1, 3.2.6, 3.2.9.3, 6.2, 7.1, 7.3, 7.4, 7.6 6.2 3.2.9.3, 3.2.9.6 4.2.1 5.2.1
NZS 3112: Pt 2:1986 Tests relating to the determination of strength of concrete NZS 3114: 1987 NZS 3602: 2003 NZS 3604: 2011 NZS 4210: 2001 NZS 4211: 2008 NZS 4229: 1999 NZS 4230: 2004 Specification for Concrete Surface Finishes Timber & wood-based products for use in buildings Timber framed buildings Masonry construction: materials and workmanship Specification for performance of windows Amend: 1, 2, 3 Concrete masonry buildings not requiring specific design Design of reinforced concrete masonry structures
SNZ HB 4236: 2002 Masonry Veneer Wall Cladding NZS 4251 Part 1: 2007 AS/NZS 4256 Part 2: 1994 AS/NZS 4455: 2008 Solid plastering Cement plasters for walls, ceilings and soffits Plastic roof and wall cladding materials Unplasticized polyvinyl chloride (uPVC) building sheets Masonry units, pavers, flags and segmental retaining wall units
Where quoted in CCANZ CP 01: 2011 4.4.1 3.3.2, 3.4.2 3.1.5.3, 3.1.5.4, 4.2.3
AS/NZS 4456.16: 2003 Masonry units, segmental pavers and flags Methods of test AS/NZS 4671 AS/NZS 4858: 2004 Steel reinforcing materials Wet area membranes
AS 1012.21 Method 21: Determination of water absorption and apparent volume of permeable voids in hardened concrete (AVPV method) 4.5.1
AS 1478.1:2000 AS 1366.3:1992/ Amdt 1:1993 AS 1366.4:1989
Chemical admixtures for concrete, mortar and grout 4.5 Part 1: Admixtures for concrete Rigid cellular plastics sheets for thermal insulation Rigid cellular polystyrene Moulded (RC/PS-M) Rigid cellular plastics sheets for thermal insulation Rigid cellular polystyrene Extruded (RC/PS-E) 4.1.3.1 4.1.3.1
ASTM C1330: 2002 ASTM C1549: 2002 Standard Specification for Cylindrical Sealant Backing for Use with Cold Liquid Applied Sealants Standard Test Method for Determination of Solar Reflectance Near Ambient Temperature Using a Portable Solar Reflectometer Standard Practice for Selection of Water Vapor Retarders for Thermal Insulation Standard Test Method for Water Absorption of Rigid Cellular Plastics Standard Test Method for Peel or Stripping Strength of Adhesive Bonds Standard Specification for Vulcanised Rubber Sheets Used in Waterproofing Systems 3.1.1, 3.1.2 4.1.3.4
ASTM C755-10
ASTM D2842-06 ASTM D903: 2010 ASTM D6134: 1997 ASTM D7105: 2006
3.2.9.2 6.5.1, 6.5.2 6.5.1
Standard Test Method for Determining the Adhesive 6.4, 6.5.1, 6.5.2 and Cohesive Strength Between Materials in Roofing or Waterproofing Membranes and Systems Standard Practice for Maintaining Constant Relative 8.2 Humidity by Means of Aqueous Solutions Standard Test Method for Solar Absorbance, Reflectance and Transmittance of Materials Using Integrating Spheres 4.1.3.4
ASTM E104: 2002 ASTM E903: 1996
ASTM E2098: 2000
Where quoted in CCANZ CP 01: 2011 Standard Test Method for Determining Tensile Breaking Strength of Glass Fibre Reinforcing Mesh for Use in Class PB Exterior Insulation and Finish Systems (EIFS), after Exposure to a Sodium Hydroxide Solution 4.1.3.2
ASTM E2134-01(2006) Standard Test Method for Evaluating the Tensile- 4.1.3.1, 4.1.3.3, 4.1.3.6 Adhesion Performance of an Exterior Insulation and Finish System (EIFS)
BRANZ EM 5: 2005 Evaluation method for adhesives and seam tapes for butyl and EPDM rubber membranes 6.5.1, 6.5.2
BRANZ Bulletin 424 Measuring moisture on building sites"
TM 34 TM 35: 2010 Tilt Up Technical Manual: New Zealand Guide to Concrete Construction New Zealand Concrete Masonry Manual: 1999 3.4.1 3.3.3 3.2.9.4
Other organisations and references
Concrete Institute of Australia: Watertight Concrete Structures - Current Practice Note 28 Membrane Group New Zealand: Code of Practice for Torch-on Membrane Systems for Roofs and Decks New Zealand Metal Roofing Manufacturers Inc: New Zealand Metal Roof and Wall Cladding Code of Practice: 2008 EIMA 101.91: 1992 4.5 6.5.1, 6.5.2
EIFS Industry Members Association: Standard Guide 4.1.3.2 for resin of resin coated glass fibre mesh in exterior insulation and finish systems (EIFS), Class PB. Building Construction Jointing products Classification and requirements for sealants 3.1.1, 3.1.2, 3.1.4.1
ISO 11600: 2002
Federal Specification Elastomeric type, cold applied single component 3.1.1, 3.1.2, 3.1.4.1 Standard for caulking, sealing, and glazing in buildings, building TT-S-00230C areas (plazas, decks, pavements), and other structures ICBO Evaluation Services Inc AC148 Acceptance criteria for flashing materials 3.1.5.4
NZS 3151: 1974 AS/NZS 2904: 1995 AS/NZS 4284: 2008 AS/NZS 4680: 1999 Precast lightweight concrete panels and slabs Damp-proof courses and flashings Testing of building facades Hot-dip galvanized (zinc) coatings on fabricated ferrous articles
AS 3706 AS 3730 Geotextiles - Methods of test (13 Parts) Guide to the properties of paints for buildings
BS 6538: 1987 Part 3: 1987 BS 6925: 1988 BS EN 988: 1997 Air permeance of paper and board Method for determination of air permeance using the Garley apparatus Specification for mastic asphalt for building and civil engineering (limestone aggregate) Zinc and zinc alloys. Specification for rolled flat products for building
ASTM E96: 1992 Standard Test Methods for Water Vapour Transmission of Materials
BRANZ Bulletin 330: 1995 Thin flooring materials (2) Preparation and laying. Appendix 1 BRANZ Weathertight Solutions Volume 4: Section 2
National Precast Concrete Association of Australia and Concrete Institute of Australia: Precast Concrete Handbook (2002), republished in 2004 with a commentary for New Zealand users by CCANZ and Precast New Zealand Inc ISO 9223: 1992 Corrosion of metals and alloys; corrosivity of atmospheres; classification
ISO/TS 15510: 2003 Stainless steels chemical composition ASTM C981 05 Standard Guide for Design of Built-Up Bituminous Membrane Waterproofing Systems for Building Decks.
This is an abbreviated list of definitions for words or terms particularly relevant to this Code of Practice.
Air seal A continuous water resistant seal fitted between a window or door reveal and the surrounding wall framing to prevent the flow of air into the interior of the building. AOV Automatic opening vent. Apron flashing A near flat or sloping flashing with a vertical upstand, used at junctions between roofs and walls. Balustrade A barrier to prevent people from falling over the edge of a roof/ deck. Balustrades may be formed from concrete or masonry wall around a roof/ deck or from a handrail and stanchions fixed to a parapet. See also Parapet. Building A building has the meaning given to it by Sections 8 and 9 of the Building Act 2004. Building element Any structural and non-structural component and assembly incorporated into or associated with a building. Included are fixtures, services, drains, permanent mechanical installations for access, glazing, partitions, ceilings and temporary supports. Capping A flashing formed to cover the exposed top of a balustrade or parapet. Also known as a coping. Cladding An exterior weathertight system used to prevent water entry into the building.
COMMENT: Includes any supporting substrate and, if applicable, weathertight coatings or membranes.
Cladding system The weathertight enclosure of a building, including claddings and their fixings, windows, doors and all penetrations, flashings, seals, joints and junctions. Concrete A combination of graded aggregates, cement, water, sand and admixtures manufactured in accordance with NZS 3104, Concrete masonry Construction using concrete masonry blocks manufactured using cement and aggregates in accordance with AS/NZS 4455, which are reinforced and either fully or partially filled with grout in accordance with NZS 4210. This definition excludes aerated concrete blocks. Composite precast panel A precast panel where insulation is placed integrally within the thickness of the panel. Control joint A joint designed to prevent damage by accommodating movement. See also Expansion joint. Damp-proof course (DPC) A narrow strip (generally up to 300 mm wide) of durable vapour barrier placed between building elements to prevent the passage of moisture from one element to another. Damp-proof membrane (DPM) A sheet material or coating, as specified in section 7.4, used to prevent water ingress from the ground into the concrete. Deck A roof designed for pedestrian traffic.
COMMENT: This definition of deck has a narrower scope than is commonly used, eg cantilevered balconies are not part of this definition.
Drip edge horizontal edge formed from plaster, metal profile or PVC profile to deflect water away from the cladding system. Durable Resistant to wear and decay. Eaves That part of the roof construction, including cladding, fascia and gutter, that extends beyond the exterior face of the wall. EIFS (Exterior Insulation and Finish System) A polystyrene sheet-based weatherproof finish system that uses mesh reinforced polymer modified cement-based or polymer-based plaster base coats and a protective top coating. Expansion joint A joint designed to prevent damage by accommodating movement. See also Control joint. External wall Any exterior face of a building within 30 of vertical, consisting of primary and/or secondary elements intended to provide protection against the outdoor environment, but which may also contain unprotected areas.
COMMENT: A roof is an external wall if within 30 of the vertical.
Flashing A component, formed from a rigid or flexible waterproof material, that drains or deflects water away from the cladding system and from junctions.. Insitu concrete construction Construction where concrete is cast into formwork on site into its final position. Integral insulation Insulation placed integrally within the thickness of a precast panel, insitu concrete or masonry element. Lining The rigid sheet covering for a wall, ceiling or other interior surface. Masonry veneer Clay or concrete block veneer cladding. Membrane a pliable sheetlike waterproofing layer, applied as a fluid or as a sheet NZRMCA Plant Audit Scheme an independent verification that concrete complies with NZS 3104. Outlet (drainage) A proprietary downpipe cover to secure a deck or roof membrane transition. Parapet The exposed top of a concrete or concrete masonry wall that extends above the level of the roof or deck. See also Balustrade. PEF Rod Closed cell polyethylene foam in accordance with ASTM C1330 used as joint backing material in conjunction with elastomeric sealant. Plaster Mixture of dry mineral materials including cement and polymers as required that when mixed with water sets hard. Polymer Plaster Mixture of wet mineral and polymer material that sets hard on exposure to air. Poorly Drained Site Ground where a hole of size 0.3 m/ 0.3 m/ 0.3 m (length/ width/ depth) filled with water takes more than 6 hours to drain
Precast Concrete Construction Construction where prefabricated concrete elements are assembled on site into their final position.
COMMENT: Precast concrete is typically cast offsite but can sometimes be cast onsite; for example, as tilt-up panels cast adjacent to their final position.
Proprietary A product or system manufactured or distributed by one owner of the patent, formula, brand name or trade mark associated with the product. Rebate A recess in a wall joint, opening or floor slab to restrict water entry. Render A term synonymous with plaster. Roof That part of a building having its upper surface exposed to the outside and at an angle of 60 degrees or less to the horizontal. Roof underlay An absorbent permeable building paper that absorbs or collects condensation or water that may penetrate the roof cladding or metal wall cladding. Saddle flashing A flashing used to make a weathertight junction between the horizontal top of a wall and the vertical face. Sandwich Panel Construction See Composite precast panel construction. Screed A layer of thin plaster or concrete as a floor topping. Specific design Design and detailing of a proposed building or parts of a building, which are outside the scope of this Code of Practice. Special concrete Concrete with a compressive strength over 50 MPa, or concrete where a property other than compressive strength forms the basis of a specification. Stanchion A pole or other connecting device, fixed into the structure of a building, which provides support for handrails, aerials and similar structures. Storey That portion of a building included between the upper surface of any floor and the upper surface of the floor immediately above, except the top storey shall be that portion of a building included between the upper surface of the topmost floor and the ceiling or roof above. Wall A vertical structure closing in part of the building, or dividing the internal space. Waterproof and waterproofing The complete and total resistance of a building element to the ingress of any water in either liquid or vapour state. Waterproof membrane A membrane impervious to water which is placed to prevent the passage of water and water vapour through a concrete or concrete masonry element. Watertight concrete Concrete which itself is impermeable to water except when under a hydrostatic pressure greater than 5KPa. Such concrete does not stop the passage of water vapour. Watertight concrete has a low water/cementitious (w/c) ratio and contains a permeability reducing admixture.
Weathertightness and weathertight Terms used to describe the resistance of a building to the weather. Weathertightness is a state where water is prevented from entering and accumulating behind the cladding in amounts that can cause undue dampness or damage to the building elements.
COMMENT: A weathertight building, even under severe weather conditions, is expected to limit moisture ingress to inconsequential amounts, insufficient to cause undue dampness inside buildings and damage to building elements. Moisture that may occasionally enter is able to harmlessly escape or evaporate.
Weatherproof A term synonymous with weathertight and usually referring to a component of a weathertight system. In general, this document uses the terms 'weathertight' and 'weathertightness' in preference. Weathertight coating A multi-coat liquid applied coating system applied to exterior walls to make them weathertight.
Dokumente ähnlich wie CCANZ-CP 01 2011
Presentation on Construction of New Classroom at Jorhat
MP PWD ROAD SOR 2016
shyam sharan dev
Cenefa Sol Beige
Sample Tesda Module.docx
gf clara A boq
Mehr von Namdeo Yengade
Is for Laterite
Asrama Pelatih Paramedik Sibu
eyhazamri3540
Architectural Record - 2005-12.pdf
162723362 Construction Sequence LNG Storage Tank
Bayu Asik
Stone Installation Methods Review