**SPECIAL SPECIFICATION**

**SECTION 08920**

**[GLAZED ALUMINUM CURTAIN WALLS]{.underline}**

[Page]{.underline}

**[PART 1 - GENERAL]{.underline}**

1.01 Summary. 2

1.02 System Description.. 2

1.03 System Performance Requirements. 3

1.04 Submittals 4

1.05 Quality Assurance 5

1.06 Warranty. 5

**[PART 2 - PRODUCTS]{.underline}**

2.01 Manufacturers. 7

2.02 Curtain Wall Systems. 7

2.03 Accessories. 8

2.04 Fabrication. 9

**[PART 3 - EXECUTION]{.underline}**

3.01 Examination. 10

3.02 Installation. 10

3.03 Cleaning. 11

3.04 Curtain Wall & Window Schedule. 11

,

**SPECIAL SPECIFICATION**

**SECTION 08920**

**GLAZED ALUMINUM CURTAIN WALLS**

**[PART 1 - GENERAL]{.underline}**

**1.01 [SUMMARY]{.underline}**

> A. This Section includes a stick-framed glazed aluminum for curtain
> walls, and fixed windows.
>
> B. Primary components include:
>
> 1\. Aluminum curtain wall framing system.
>
> 2\. Internal steel reinforcement.
>
> 3\. Glazing gaskets.
>
> 4\. Copings, trim, and similar border and filler items.
>
> 5\. Anchors, shims, fasteners, inserts, accessories, and support
> brackets.
>
> C. Related Sections
>
> 1\. Section 07900, Sealants for joint sealing within the curtain wall
> system.
>
> 2\. Section 08800, Glass and Glazing for requirements included as part
> of the curtain wall system.
>
> 3\. Section 08410, Aluminum Entrances and Storefronts.

**1.02 [SYSTEM DESCRIPTION]{.underline}**

> A. Provide glazed aluminum curtain wall system consisting of
> individual members erected separately. Major components consist of
> aluminum vertical exterior mullions, horizontal rails, and matching
> glazed insulated panels.

**1.03 [SYSTEM PERFORMANCE REQUIREMENTS]{.underline}**

> A. Provide the manufacturer\'s stock curtain wall system, adapted to
> the application.
>
> 1\. Design Wind Velocity: As indicated in ANSI A58.1
>
> B. Air and Water Infiltration: Design and install the glazed curtain
> wall system for permanent resistance to air and water leakage through
> the system in accordance with the following:
>
> 1\. Air Infiltration: Air leakage through the curtain wall system
> shall not exceed 0.06 cfm per sq. ft. of wall area when tested in
> accordance with ASTM E 283 at a minimum static air pressure
> differential of 1.57 lbf per sq. ft.
>
> 2\. Water Penetration: No uncontrolled water leakage through the
> curtain wall system, as defined in AAMA 501, when tested in accordance
> with ASTM E 331 at a minimum differential pressure of 20 percent of
> inward design wind load but not less than 6.24 lbf per sq. ft. or more
> than 12 lbf per sq. ft.
>
> C. Structural Performance: Design, engineer, fabricate, and install
> the glazed aluminum curtain wall system to withstand the effects of a
> wind load of 35 psf acting inward and 30 psf acting outward, normal to
> the plane of the wall, when tested in accordance with ASTM E 330, with
> no material failures or permanent deformation of structural members.
>
> 1\. Structural Test Pressure: Equal to 150 percent of the inward and
> outward acting design wind pressures.
>
> 2\. Deflections: Capable of withstanding building movements including
> wind loading and of performing within the following limitations:
>
> a\. Deflection of framing members perpendicular to the plane of the
> wall shall not exceed 1/240 of its clear span or 3/4 inch, whichever
> is less.
>
> b\. Deflection of members parallel to the plane of the wall, when
> carrying its full dead load, shall not exceed an amount that will
> reduce glass bite by less than 75 percent of the design dimension and
> shall not reduce edge clearance between itself and the panel, glass,
> or other fixed member immediately below to less than 1/8 inch.
>
> D. Thermal Movements: Capable of withstanding thermal movements
> resulting from an ambient temperature differential of 120 deg F (67
> deg C), which may result in a metal surface temperature range of 180
> deg F (100 deg C) within the curtain wall framing without causing
> buckling, stresses on glass, failure of joint sealants, damaging loads
> on fasteners, or other detrimental effects.
>
> E. Condensation Requirements: Provide thermal-break construction that
> has been tested in accordance with AAMA 1502.7 and certified by the
> manufacturer to provide a condensation resistance factor (CRF) of at
> least 45.

**1.04 [SUBMITTALS]{.underline}**

> A. Submit in accordance with provisions of Section 01300.
>
> B. Product data: Include manufacturer\'s specifications for materials
> and fabrication, installation instructions, and recommendations for
> maintenance. Include test reports showing compliance with project
> requirements where test method is indicated.
>
> C. Shop Drawings: Show adaptation of manufacturer\'s standard glazed
> aluminum curtain wall system to the project; include typical unit
> elevations at 1/2-inch scale and details at 3-inch scale. Show
> dimensions, profiles of members, anchorage system, interface with
> building construction, and glazing.
>
> 1\. Include setting drawings, templates, and directions for the
> installation of anchor bolts and other anchorages installed as a unit
> of work under other sections.
>
> 2\. Provide material properties and other information needed for
> structural analysis including computations, prepared, signed, or, and
> sealed by a professional engineer licensed to practice in New Mexico.
>
> D. Samples: Provide pairs of samples of each aluminum finish type and
> color on 12-inch-long sections of extrusions or formed shapes and on
> 6-inch-squares of aluminum sheet or plate. Include 2 or more units in
> each sample set showing the extreme limits of variations expected in
> color and texture of finish.
>
> 1\. The SDR reserves the right to require fabrication samples showing
> the following:
>
> a\. Prime members.
>
> b\. Joinery.
>
> c\. Anchorage.
>
> d\. Expansion provisions.
>
> e\. Glazing and similar details.
>
> f\. Profiles.
>
> g\. Intersections.
>
> E. Installer certificates signed by the manufacturer certifying that
> the Installers of the glazed aluminum curtain wall system comply with
> requirements indicated.

**1.05 [QUALITY ASSURANCE]{.underline}**

> A. Installer Qualifications: Engage an experienced Installer who has
> successfully completed five projects of similar magnitude, and who is
> acceptable to the curtain wall manufacturer.
>
> B. Glazing Standards: Comply with recommendations of Flat Glass
> Marketing Association (FGMA) \"Glazing Manual\" and \"Sealant Manual\"
> except where more stringent requirements are indicated. Refer to those
> publications for definitions of glass and glazing terms not otherwise
> defined.
>
> C. Insulating Glass Certification Program: Provide insulating glass
> units permanently marked with certification label from Insulating
> Glass Certification Council (IGCC).
>
> D. Preinstallation Conference: Before beginning curtain wall
> installation, conduct a preinstallation conference at the Project site
> with the curtain wall system manufacturer, installer, and other
> interested parties to review procedures, schedules, and coordination
> of the curtain wall installation with other elements of the Work.
>
> E. Field Measurements: Take field measurements before fabrication;
> show recorded measurements on final shop drawings.

**1.06 [WARRANTY]{.underline}**

> A. Submit a written warranty signed by authorized representatives of
> the Contractor and installer warranting that portions of the Work
> involving glazed aluminum curtain wall are of good quality, free from
> defects, and in conformance with the requirements of the Contract
> Documents and further promising to repair or replace defective Work
> during a 5-year period following completion of that portion of the
> Work.
>
> 1\. Defective is defined to include the following:
>
> a\. Glass breakage.
>
> b\. Failure of operational parts to function normally.
>
> c\. Deterioration or discoloration of finishes.
>
> d\. Failure of the system to meet performance requirements.
>
> B. The Warranty submitted under this Section shall not deprive the
> Owner of other rights or remedies that the Owner may have under other
> provisions of the Contract Documents and is in addition to and runs
> concurrent with other warranties made by the Contractor under
> requirements of the Contract Documents.

**[PART 2 - PRODUCTS]{.underline}**

**2.01 [MANUFACTURERS]{.underline}**

> A. Manufacturers: Subject to compliance with requirements, provide
> products of one of the following:
>
> 1\. Armarlite Corporation.
>
> 2\. Efco Corporation.
>
> 3\. Kawneer Company, Inc.
>
> 4\. Pittco, Inc.
>
> 5\. Vistawall Architectural Products.

**2.02 [CURTAIN WALL SYSTEMS]{.underline}**

> A. Provide glazed curtain wall systems as manufactured by Pittco, Inc
> as follows:
>
> 1\. Pittco 70 Wall:
>
> a\. Frame Depth: As Required.
>
> b\. Profile: 2-1/2\"
>
> c\. U Value: .49
>
> d\. CRF: 61
>
> 2\. Pittco 250 Wall:
>
> a\. Frame Depth: 4-13/16\"
>
> b\. Profile: 2\"
>
> c\. U Value: .49
>
> d\. CRF: 65
>
> 3\. Pittco TMT-114:
>
> a\. Frame Depth: 4-1/2\"
>
> b\. Profile: 2\"
>
> c\. U Value: .50
>
> d\. CRF: 49
>
> B. Color: Custom color to match Benjamin Moore paint color #833 Dark
> Navy.
>
> C. Finish: Comply with the NAAMM \"Metal Finishes Manual\" for
> recommendations relative to application and designations of finishes.
>
> D. Refer to Article 3.04 Curtain Wall & Window Schedule, for location
> of each system.

**2.03 [ACCESSORIES]{.underline}**

> A. Provide manufacturers standard glazing gaskets, structural rubber
> glazing gaskets as required for complete installations.
>
> B. Glazing Sealants and Fillers: Comply with Section 08800 - Glass and
> Glazing.
>
> C. Framing System Gaskets and Joint Fillers: Manufacturer\'s standard
> permanent framing system gaskets and joint fillers, depending on joint
> movement and sealing requirements, such as sliding joints, compression
> joint translation, or nonmoving joints.
>
> D. Sealants: Comply with requirements of Section 07900 - Sealants.
>
> E. Brackets and Reinforcements: Manufacturer\'s standard high-strength
> aluminum units.
>
> F. Fasteners and Accessories: Provide manufacturer\'s standard non-
> corrosive fasteners and accessories compatible with materials used in
> the framing system and with exposed portions that match finish of the
> curtain wall system. Where movement is expected, provide slip-joint
> linings of sheets, pads, shims, or washers of fluorocarbon resin or a
> similar material recommended by the manufacturer.
>
> G. Concrete or Masonry Inserts: Cast-iron, malleable iron or hot-dip
> galvanized steel inserts complying with ASTM A 386.

**2.04 [FABRICATION]{.underline}**

> A. Fabricate curtain wall system at the manufacturer\'s shop to the
> fullest extent possible and before applying finishes. Provide
> concealed fasteners. Make provisions to weep penetrating water and
> condensation to the exterior. At the Contractor\'s option, install
> glass in prefabricated frames at the manufacturer\'s shop.

**[PART 3 - EXECUTION]{.underline}**

**3.01 [EXAMINATION]{.underline}**

> A. Examine connection between new and existing substrates. Ensure
> surfaces are plumb and level within required tolerances.
>
> B. Furnish inserts at proper times for setting in concrete formwork,
> masonry, and similar work indicated to support curtain wall work.

**3.02 [INSTALLATION]{.underline}**

> A. Comply with manufacturer\'s instructions for protecting, handling,
> and installing fabricated curtain wall components, with particular
> care and attention to preservation of applied finishes. Discard or
> remove and replace damaged members.
>
> B. Anchor components securely in place in the manner indicated. Shim
> and allow for movement resulting from changes in thermal conditions.
> Provide separators and isolators to prevent corrosion, electrolytic
> deterioration, and freeze-up of moving joints.
>
> C. Glazing: Comply with requirements specified in Section 08800, Glass
> and Glazing.
>
> D. Sealants and Joint Fillers: Comply with requirements of Section
> 07900, Sealants.
>
> E. Erection Tolerances: Install components plumb, level, accurately
> aligned, and located in reference to column lines and floor levels.
> Adjust work to conform to the tolerances indicated below.
>
> 1\. Plumb: 1/8 inch in 10 feet; 1/4 inch in 40 feet.
>
> 2\. Level: 1/8 inch in 20 feet; 1/4 inch in 40 feet.
>
> 3\. Alignment: Limit offset of member alignment to 1/16 inch where
> surfaces are flush or less than 1/2 inch out of flush and separated by
> less than 2 inches by a reveal or protruding work; otherwise limit
> offsets to 1/8 inch.

**3.03 [CLEANING]{.underline}**

> A. Clean the completed system, inside and out, promptly after erection
> and installation of glass and sealants, allowing for nominal curing of
> liquid sealants. Protect for the remainder of the construction period.
>
> B. At the time of Substantial Completion, clean curtain wall system
> thoroughly and polish glass. Demonstrate proper cleaning methods and
> materials to the SDR\'s maintenance personnel.

**3.04 [CURTAIN WALL & WINDOW SCHEDULE]{.underline}**

> Curtain Wall at Communication Corridor:
>
> Pittco 70 Wall
>
> Low E glazing
>
> East Facing Clerestory or Communication Corridor:
>
> Pittco 250 Wall
>
> Low E glazing
>
> North and East Facing Exterior windows at Offices, Conference Rooms
> and Breakroom:
>
> Pittco 450 Wall
>
> Low E glazing
>
> West Facing Clerestories on Communication Corridor:
>
> Pittco 250 Wall
>
> Low E glazing
>
> South And West Clerestories at lobby:
>
> Pittco 250 Wall
>
> Low E glazing
>
> West and South facing exterior window at Offices, Labs, Lobby and
> Lobby Vestibule:
>
> Pittco 450 Wall
>
> Low E glazing

END OF SECTION