SPECIAL SPECIFICATION

SECTION 08920

[GLAZED ALUMINUM CURTAIN WALLS]{.underline}

[Page]{.underline}

PART 1 - GENERAL

1.01 Related Documents
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1.02 References
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1.03 Summary
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1.04 System Description
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1.05 System Performance Requirements
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1.06 Submittals
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1.07 Quality Assurance
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1.08 Project Conditions
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1.09 Sequencing and Scheduling
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1.10 Warranty
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PART 2 - PRODUCTS

2.01 Manufacturers
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2.02 Materials
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2.03 Components
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2.04 Fabrication
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2.05 Finishes
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PART 3 - EXECUTION

3.01
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3.02 Cleaning
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SPECIAL SPECIFICATION

SECTION 08920

[GLAZED ALUMINUM CURTAIN WALLS]{.underline}

PART 1 - GENERAL

1.01 [RELATED DOCUMENTS]{.underline}

A. Drawings and general provisions of the Contract, including General
and Supplementary Conditions and Division 1 Specification Sections,
apply to this Section.

1.02 [REFERENCES]{.underline}

A. [Aluminum Association (AA)]{.underline}

C12C42Rx1

B. [American Architectural Manufacturers Association (AAMA)]{.underline}

501

605.2

1502.7

C. [American Society of Testing and Materials (ASTM)]{.underline}

A 386

B 209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate

B 221 Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods,
Wire, Shapes, and Tubes

C 1036 Specification for Flat Glass

E 90 Test Method for Laboratory Measurement of Airborne Sound
Transmission Loss of Building Partitions

E 283 Test Method for Rate of Air Leakage Through Exterior Windows,
Curtain Walls, and Doors Under Specified Pressure Differences Across the
Specimen

E 330 Test Method for Structural Performance of Exterior Windows,
Curtain Walls, and Doors By Uniform Static Air Pressure Difference

E 331 Test Method for Water Penetration of Exterior Windows, Curtain
Walls, and Doors By Uniform Static Air Pressure Difference

E 699 Criteria for Evaluation of Agencies Involved in Testing, Quality
Assurance, and Evaluating Building Components in Accordance with Test
Methods Promulgated by ASTM Committee E-6

E 774 Specification for Sealed Insulating Glass Units

E. [National Association of Architectural Metal Manufacturers
(NAAMM)]{.underline}

1.03 [SUMMARY]{.underline}

A. This section includes a stick-framed glazed aluminum curtain wall
system with interior and exterior metal framing.

B. [Primary components of the glazed curtain wall system
include]{.underline}:

1\. Aluminum curtain wall framing system.

2\. Internal steel reinforcement.

3\. Glazing gaskets.

4\. Sills, copings, trim, and similar border and filler items.

5\. Anchors, shims, fasteners, inserts, accessories, and support
brackets.

6\. Joint sealing within the curtain wall system; refer to Division 7
Section \"Joint Sealers\" for requirements.

7\. Glass and glazing included as part of the curtain wall system; refer
to Division 8 Section \"Glass and Glazing\" for requirements.

C. Aluminum entrance door work is included in Division 8 Section
\"Aluminum Entrances\".

D. Automatic door operator equipment is included in Division 8 Section
\"Automatic Door Operators\".

1.04 [SYSTEM DESCRIPTION]{.underline}

A. [Aluminum Stick-Type System]{.underline}: The glazed aluminum curtain
wall system shall consist of individual members erected separately.
Major components consist of aluminum vertical exterior mullions,
horizontal rails, and matching glazed insulated spandrel panels and
vision glass.

1\. Except for spandrel panels installed during erection, the system
shall be designed for glazing from the inside.

1.05 [SYSTEM PERFORMANCE REQUIREMENTS]{.underline}

A. [General]{.underline}: Provide the manufacturer\'s stock curtain wall
system, adapted to the application indicated, that complies with
performance requirements specified as demonstrated by testing the
manufactures corresponding stock systems according to test methods
indicated.

1\. Design wind velocity at the project site is 81 mph.

B. [Air and Water Infiltration]{.underline}: 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: There shall be 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]{.underline}: 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 shall be equal to 150 percent of the inward
and outward acting design wind pressures.

2\. Deflections: The curtain wall system shall be 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 1/175 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]{.underline}: The glazed aluminum curtain wall
system shall be 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]{.underline}: The glazed aluminum curtain
wall system shall be of 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.

F. [Sound Transmission]{.underline}: The average sound transmission loss
through the glazed aluminum curtain wall system shall be a minimum of 30
db for the standard frequency range of 125 to 4000 Hz when tested in
accordance with ASTM E 90 with the glass type indicated.

1.06 [SUBMITTALS]{.underline}

A. [General]{.underline}: Submit the following in accordance with
Conditions of the Contract and Division 1 Specification Sections.

B. [Product Data]{.underline}: 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]{.underline}: Show adaptation of the 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\. Indicate where and how the system deviates from contract drawings
and specifications. Show section moduli of wind-load-bearing members and
calculations of stresses and deflections. 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 the jurisdiction where the project is
located.

D. [Samples]{.underline}: 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 Sandia Delegated Representative (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.

F. [Test Reports]{.underline}: Provide test reports from a qualified
independent testing laboratory that show compliance of the
manufacturer\'s stock glazed aluminum curtain wall system with
performance requirements indicated based on comprehensive testing of the
system by the laboratory within the last 3 years current production of
the system by the manufacturer.

1.07 [QUALITY ASSURANCE]{.underline}

A. [Installer Qualifications]{.underline}: Engage an experienced
Installer who has successfully completed installation of glazed curtain
wall systems similar in material, design, and extent to that indicated
for the Project and who is acceptable to the curtain wall manufacturer.

B. [Testing Laboratory Qualifications]{.underline}: To qualify for
acceptance, an independent testing laboratory must demonstrate to the
Sandia Delegated Representative (SDR)\'s satisfaction, based on
evaluation of laboratory-submitted criteria conforming to ASTM E 699,
that it has the experience and capability to conduct satisfactorily the
testing indicated without delaying the progress of the Work.

C. [Glazing Standards]{.underline}: 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 in this section or referenced standards.

D. [Insulating Glass Certification Program]{.underline}: Provide
insulating glass units permanently marked either on spacers or on one
component pane of units with the appropriate certification label of
inspecting and testing organization indicated below:

1\. Insulating Glass Certification Council (IGCC).

E. [Single-Source Responsibility]{.underline}: Provide glazed aluminum
curtain wall system for the project from one source from a single
manufacturer.

F. [Design Criteria]{.underline}: The drawings indicate sizes, profiles,
and dimensional requirements of the curtain wall system. Curtain wall
systems having equal performance characteristics with deviations from
indicated dimensions and profiles may be considered, provided deviations
do not change the design concept of intended performance.

1\. The burden of proof for equality of the curtain wall systems is on
the proposer.

G. All materials used shall not contain asbestos fibers or lead.

1.08 [PROJECT CONDITIONS]{.underline}

A. [Field Measurements]{.underline}: Take field measurements before
fabrication; show recorded measurements on final shop drawings.
Coordinate fabrication schedule with construction progress to avoid
delay.

1.09 [SEQUENCING AND SCHEDULING]{.underline}

A. Schedule installation of the glazed aluminum curtain wall system in
sequence with related elements of the Work specified in other Sections
to ensure that wall assemblies, including flashing, trim, and joint
sealers, are protected against damage from effects of weather, age,
corrosion, and other causes.

1.10 [WARRANTY]{.underline}

A. [General]{.underline}: 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

2.01 [MANUFACTURERS]{.underline}

A. [Manufacturers]{.underline}: Subject to compliance with requirements,
provide products of one of the following:

Armarlite Corporation

Bruce Engineering Company

Cupples Products; Division of H.H. Robertson, Inc.

Curtainwall Systems, Inc.

Efco Corporation

Kawneer Company, Inc.

Lynbrook Glass and Architectural Metals Corp.

Marmet Corporation

Miami Wall System, Inc.

Panelization Systems International, Inc.

Profile Systems, Inc.

PPG Industries, Inc.

E.G. Smith Construction Products, Inc.

Tubelite Division of Indal, Inc.

Vistawall Architectural Products

Wausau Metals Corporation

Welling and Company

2.02 [MATERIALS]{.underline}

A. [Aluminum]{.underline}: Provide alloy, temper, and thickness
recommended by the manufacturer for the type of use and finish indicated
and with not less than the strength and durability properties of the
alloy and temper designated below for each aluminum form required.

1\. Extruded Bar and Shapes: Comply with requirements of ASTM B 221.

2\. Plate and Sheet: Comply with requirements of ASTM B 209.

B. [Glass]{.underline}: Provide glass of types and thicknesses
indicated. Fabricate glass to sizes required for openings indicated with
edge clearances and tolerances complying with manufacturer\'s
recommendations. Refer to Division 8 Section \"Glass and Glazing\" for
requirements. Also refer to the drawings for \"Glazing Type Schedule\".

1\. Float Glass: Comply with requirements of the \"Glass and Glazing\"
Section, including those specified by reference to ASTM C 1036.

2\. Sealed Insulating Glass: Insulating glass units shall be the
manufacturer\'s standard preassembled dual-seal insulating glass units
consisting of organically sealed panes of 1/4-inch-thick clear float
glass enclosing a hermetically sealed dehydrated 1/2-inch air space.
Provide units with a silicone secondary seal with an IGCC-certified CBA
level compatible with structural silicone sealant.

a\. Comply with requirements of the \"Glass and Glazing\" Section,
including those specified by reference to ASTM E 774 for performance
Class A. Requirements for glass characteristics, air space, sealing
system, sealant, spacer material, corner design, and desiccant are
specified in the \"Glass and Glazing\" Section.

b\. Units shall be certified compatible by the sealant manufacturer.
Insulating glass seals shall be certified to withstand project
structural loading requirements.

C. [Glazing Gaskets]{.underline}: Manufacturer\'s standard sealed-corner
pressure-glazing or wedge-lock dry glazing system of black, resilient
elastomeric glazing gaskets, setting blocks and shims or spacers as
required, hardness as selected by manufacturer.

1\. Gasket Material: Extruded or molded EPDM synthetic rubber gaskets,
compound as recommended by the manufacturer.

D. [Framing System Gaskets and Joint Fillers]{.underline}:
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.

E. Sealants and joint fillers, both for joints within the curtain wall
construction and for joints at the interface of curtain wall
construction and other work, shall comply with requirements specified in
the \"Joint Sealers\" Section.

F. [Concealed Flashing]{.underline}: Dead-soft 26-gage stainless steel
concealed flashing of type selected for compatibility by the
manufacturer.

2.03 [COMPONENTS]{.underline}

A. [Brackets and Reinforcements]{.underline}: Manufacturer\'s standard
high-strength aluminum units.

B. [Fasteners and Accessorie]{.underline}s: 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.

C. [Concrete or Masonry Inserts]{.underline}: Cast-iron, malleable iron
or hot-dip galvanized steel inserts complying with ASTM A 386.

2.04 [FABRICATION]{.underline}

A. [General]{.underline}: 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.

1\. Match exposed work to produce continuity of line. Fit joints
accurately and secure rigidly.

2.05 [FINISHES]{.underline}

A. [General]{.underline}: Comply with the NAAMM \"Metal Finishes
Manual\" for recommendations relative to application and designations of
finishes.

B. Finish designations prefixed by \"AA\" conform to the system
established by the Aluminum Association for designating aluminum
finishes.

C. [High-Performance Organic Coating]{.underline}: AA-C12C42R1x
(Chemical Finish: cleaned with inhibited chemicals; Chemical Finish:
chemical conversion coating, acid chromate-fluoride-phosphate
pretreatment; Organic Coating: as specified below). Prepare, pretreat,
and apply coating to exposed metal surfaces to comply with coating and
resin manufacturer\'s instructions.

1\. Fluorocarbon 2-Coat Coating System: Manufacturer\'s standard 2-coat
thermocured system, complying with AAMA 605.2, composed of specially
formulated inhibitive primer and fluorocarbon color topcoat containing
not less than 70 percent polyvinyldene fluoride resin by weight.

a\. Color and Gloss: Match color and gloss of wall panels as specified
in section \"Manufactured Roof and Wall Panels\".

PART 3 - EXECUTION

3.01 [INSTALLATION]{.underline}

A. Comply with manufacturer\'s instructions for protecting, handling,
and installing fabricated curtain wall components, with particular care
and attention in 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]{.underline}: Comply with requirements specified in \"Glass
and Glazing\" sections.

D. [Erection Tolerances]{.underline}: 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.
Tolerance indicated below are maximum and are not cumulative.

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.

4\. Location: 3/8-inch maximum deviation from the measured theoretical
location of any member at any location.

3.02 [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. The installer shall advise the Contractor of proper and
adequate procedures for protection and cleaning during the remainder of
the construction period so that the system will be without damage and
deterioration at the time of acceptance.

B. At the time of Substantial Completion, clean curtain wall system
thoroughly and polish glass. Demonstrate proper cleaning methods and
materials to the Owner\'s maintenance personnel.

END OF SECTION