Specifications.doc

Project No:

4/3/2025

SECTION 08 44 13

GLAZED ALUMINUM CURTAIN WALLS

PART 1 - GENERAL

1.1 DESCRIPTION:

A. This section specifies glazed aluminum curtain wall system.

A. Thermally isolated, pressure equalized on interior.

B. Type: Unit and Mullion system to include following:

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2. Closures, trim, subsills and flashings.

3. Column covers.

4. Fasteners, anchors, and related reinforcement.

1.2 RELATED WORK:

Glazing: Section 08 80 00, GLAZING.

1.3 QUALITY ASSURANCE:

A. Qualifications:

A. Approval by Contracting Officer Representative (COR) is required of products or service of proposed manufacturer, suppliers and installers, and will be based upon submission by Contractor of certification that:

1. Manufacturers Qualifications: Manufacturer with five (5) years continuous documented experience in fabrication, of glazed aluminum curtain wall systems of similar type and for projects of equivalent size.

2. Installer: Manufacturer approved in writing who has continuously installed glazed aluminum curtain walls systems of similar type and for projects of equivalent size for previous five (5) years.

1.4 DELIVERY, STORAGE AND HANDLING:

A. Refer to AAMA CW 10 for care and handling of architectural aluminum from shop to site.

B. Prior to packaging for shipment from factory, mark wall components to correspond with shop and erection drawings and their placement location and erection sequence.

C. Prior to shipment from factory, place knocked‑down lineal curtain wall members in cardboard containers and cover finished surfaces of members with protective covering of adhesive paper, waterproof tape, or strippable plastic. Do not cover metal surfaces that will be in contact with sealants after installation.

1.5 PROJECT CONDITIONS:

A. Field Measurements: Where glazed aluminum curtain wall systems are indicated to fit to other construction, verify dimensions of other construction by field measurements before fabrication and indicate measurements on shop drawings. Coordinate fabrication schedule with construction progress to avoid delaying Work.

1.6 APPLICABLE PUBLICATIONS:

A. Publications listed below form a part of this specification to extent referenced. Publications are referred to in text by basic designation only.

B. American Architectural Manufacturers Association (AAMA):

MCWM-1-89

Metal Curtain Wall Manual

CW 10-12

Care and Handling of Architectural Aluminum from Shop to Site

CW 13-85

Structural Sealant Glazing Systems (A Design Guide)

503-08 Field Testing of Metal Storefronts, Curtain walls and Sloped Glazing Systems

C. American Society of Civil Engineers (ASCE):

ASCE 7-10

Minimum Design Loads for Buildings and Other Structures

D. ASTM International (ASTM):

A36/A36M-12 Structural Steel

A123/A123M-13 Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

A193/A193M-14a Alloy‑Steel and Stainless-Steel Bolting Materials for High Temperature Service

A307-14 Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength

B209-14 Aluminum and Aluminum Alloy Sheet and Plate

B211-12 Aluminum and Aluminum Alloy Bar, Rod, Wire

B221-14 Aluminum and Aluminum Alloy Extruded Bars, Rods, Wire, Shapes and Tubes

B316/B316M-10 Aluminum and Aluminum Alloy Rivet and Cold-Heading, Wire, and Rods

C578-14a Rigid Cellular Polystyrene Thermal Insulation

C920-14a Elastomeric Joint Sealants

C794-10 Standard Test Method for Adhesion-In-Peel of Elastomeric Joint Sealants.

C1193-13 Guide for Use of Joint Sealants

C1363-11 Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus

C1521-13 Practice for Evaluating Adhesion of Installed Weatherproofing

E84-14 Surface Burning Characteristics of Building Materials

E413-10 Classification for Rating Sound Insulation

E. American Welding Society, Inc. (AWS):

D1.2/D.1.2M-06(R2014) Structural Welding Code‑Aluminum

F. National Association of Architectural Metal Manufacturers (NAAMM):

500 Series (2006) Metal Finishes Manual

G. Society for Protective Coatings (SSPC)

Paint 25-97 (2004) Zinc Oxide, Alkyd, Linseed Oil Primer for Use Over Hand Cleaned Steel Type 1 and Type II

Paint 20-82 (2019) Zinc-Rich Coating, Type I-Inorganic, and Type II-Organic.

H. U.S. Veterans Administration:

Physical Security Design Manual for VA Facilities (VAPSDG); Life Safety Protected

Architectural Design Manual for VA Facilities (VASDM)

I. Environmental Protection Agency (EPA):

40 CFR 59(2014)

National Volatile Organic Compound Emission Standards for Consumer and Commercial Products

1.7 warranty:

A. Construction Warranty: Comply with FAR clause 52.246-21, “Warranty of Construction”.

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION:

A. Design Requirements:

A. Shop unitized assembly.

B.

Maximum wall framing member deflection, in a direction normal to plane of wall: 1/175 of its clear span or 20 mm (3/4 inch), whichever is less, when designed in accordance with requirements of AAMA TIR A11 and tested in accordance with ASTM E330/E330M.

C. Maximum wall framing member deflection when a gypsum wallboard surface is affected: 1/360 of span.

D. Maximum Framing Member Permanent Deformation: 0.2 percent of its clear span when tested in accordance with ASTM E330/E330M for a minimum test period of 10 seconds at 1.5 times design wind pressures indicated as part of structural drawing wind load requirements.

No glass breakage, or damage to fasteners, hardware or accessories is permitted due to deformation design requirements indicated.

1. Provide system complete with framing, mullions, trim, fasteners, anchors, accessories, concealed auxiliary members, and attachment devices for securing wall to structure as specified or indicated. Unless noted otherwise, comply with AAMA MCWM‑1.

2. Obtain all components of from single manufacturer.

3. Fully coordinate system accessories directly incorporated and adjacent to contiguous related work and ensure materials compatibility, deflection limitations, thermal movements, and clearances and tolerances as indicated or specified. Coordinate continuity with adjacent thermal, weather, air and vapor barriers.

4. Provide system with adequate allowances for expansion and contraction of components and fastenings to prevent buckling damage, joint seal failure, glass breakage, undue stress on fastenings or other detrimental effects. For design purposes, base provisions for thermal movement on assumed ambient temperature range of from ‑18 degrees C to 49 degrees C (0 degrees F to 120 degrees F).

5. Provide wall system to accommodate tolerances in building frame and other contiguous work as indicated or specified.

2.2 MATERIALS:

A. Extruded Aluminum Framing Members: ASTM B221M (B221); 6063-T5 extruded aluminum for non-structural components or 6063-T6 extruded aluminum for structural members; temper and alloy as recommended by manufacturer.

B. Sheet Aluminum: ASTM B209M (B209); 6065-T5 temper and alloy as recommended by manufacturer.

A.

Formed flashing and closures: Minimum 1.58 mm (0.062 inch) thick aluminum, in finish as selected.

B.

Extruded sill members: Minimum 1.58 mm (0.062 inch) thick aluminum, in finish as selected.

C. Fasteners:

A. For Framework Connections: ASTM B211M (B211) 2024‑T4 aluminum, ASTM A193/A193M B8 300 series, stainless steel, and ASTM B316 aluminum rivets, as required by connection.

B. For Anchoring Glazed Aluminum Curtain Wall to Support Structure: ASTM A307 zinc plated steel fasteners.

D. Shims: Metal or plastic.

E. Glazing Materials:

A.

As specified under Section 08 80 00, GLAZING.

B.

Glazing Gaskets: Interior: Continuous, closed cell PVC foam sealant tape, sealed at corners.

C.

Glass Sizes and Clearances:

A) Accommodate up to 1/4-inch glazing.

B) Sizes indicated are nominal. Verify actual sizes required by measuring frames. Coordinate dimensions for glass and glass holding members to meet applicable minimum clearances as recommended by glass manufacturer. Do not nip glass to remove flares or to reduce oversized dimensions. All cutting is to occur in factory.

D.

Glass Setting Materials:

A) Provide head bead and drive wedge required for glass installation to suit curtain wall system in accordance with manufacture’s recommendations.

2.3 FABRICATION:

A. Curtain wall components are to be of materials and thickness indicated in construction documents. Details indicated are representative of required design and profiles. Maintain sightlines. Unless specifically indicated or specified otherwise, methods of fabrication and assembly are to be at discretion of curtain wall manufacturer. Perform fitting and assembling of components in shop to maximum extent practicable. Anchorage devices are to permit adjustment in three directions. No exposed fasteners are permitted.

B. Joints: Joints exceeding +1.5 mm (+1/16") are to be mechanically fastened.

C. Protection and Treatment of Metals:

A.

Remove from metal surfaces lubricants used in fabrication and clean off other extraneous material before leaving shop.

B. Provide protection against galvanic action wherever dissimilar metals are in contact, except in case of aluminum in permanent contact with galvanized steel, zinc, stainless steel, or relatively small areas of white bronze. Paint contact surfaces with one coat bituminous paint conforming to MIL‑C‑18480 or apply appropriate caulking material or nonabsorptive, noncorrosive, and non-staining tape or gasket between contact surfaces.

D. Metal sills and Closures: Fabricate accessories, spandrel panels, trim closures of sizes and shapes indicated from similar materials and finish as specified for wall system.

2.4 METAL FINISHES:

A. In accordance with NAAMM AMP500 series.

B. Anodized Aluminum:

A. AA‑C22A44 Chemically etched medium matte with electrolytically deposited metallic compound, integrally colored coating Class 1 Architectural, 0.7‑mil thick finish. Dyes will not be accepted.

1. Dark bronze.

PART 3 - EXECUTION

3.1 PREPARATION:

A. Take field dimensions and examine condition of substrates, supports, and other conditions under which work of this section is to be performed to verify that work may properly commence. Do not proceed with installation until unsatisfactory conditions have been corrected.

B. Contact between aluminum and dissimilar metals are to receive a protective coating of bituminous paint for prevention of electrolytic action and corrosion.

3.2 INSTALLATION:

A. Install and erect glazed curtain wall system and all components in accordance with written directions of curtain wall manufacturer. Match profiles, sizes, and spacing indicated on approved shop drawings.

B. Install glazed aluminum curtain wall system so as to maintain a virtually flat face cap, with no visible bowing.

C. Install entire system so that fasteners are not visible.

D. Tolerances:

A. Maximum variation from plane or location shown on approved shop drawings: 3 mm per 3657 mm (1/8 inch per 12 feet) of length up to not more than 13 mm (1/2 inch) in any total length.

B. Maximum offset from true alignment between two (2) identical members abutting end to end in line: 0.8 mm (1/32 inch).

C.

Sealant Space Between Curtain Wall Mullion and Adjacent Construction: Maximum of 19 mm (3/4 inch) and minimum of 6 mm (1/4 inch).

3.3 ADJUSTING:

A. Adjust doors to provide a tight fit at contact points and operate easily.

B. Adjust weather-stripping to make even contact with surfaces.

C. Adjust operating hardware and moving parts.

3.4 CLEANING:

A. Install curtain wall frame and associated metal to avoid soiling or smudging finish.

B. Clean metal surfaces promptly after installation, exercising care to avoid damage to coatings.

C. Remove excess glazing and sealant compounds, dirt, and other substances.

D. Follow recommendations of manufacturer in selection of cleaning agents. Do not use cleaning agents containing ammonia or other compounds that might damage finished metal surfaces.

E. Replace cracked, broken, and defective glass with new glass at no additional cost to Government. Just prior to final acceptance of curtain wall system clean glass surfaces on both sides, remove labels, paint spots, compounds, and other defacements, and clean metal fixed panels. Remove and replace components that cannot be cleaned successfully.

3.5 DEMONSTRATION, TESTING, AND ACCEPTANCE:

A. Instruct Government’s personnel in proper operation and maintenance of door equipment. Train personnel in procedures to follow in event of operational failures or malfunctions.

B. Acceptance: At completion of project, and as a condition of acceptance, door and systems are to be operated for a period of fifteen (15) consecutive calendar days without breakdown.

3.6 PROTECTION:

A. After installation, protect windows, and other exposed surfaces from disfiguration, contamination, contact with harmful materials, and from other construction hazards that will interfere with their operation, or damage their appearance or finish. Protection methods are to be in accordance with recommendations of product manufacturers or of respective trade association. Remove paper or tape factory applied protection immediately after installation. Clean surfaces of mortar, plaster, paint, smears of sealants, and other foreign matter to present neat appearance and prevent fouling of operation. In addition, wash with a stiff fiber brush, soap and water, and thoroughly rinse. Where surfaces become stained or discolored, clean or restore finish in accordance with recommendations of product manufacturer or respective trade association.

‑ ‑ ‑ END ‑ ‑ -

SECTION 08 80 00

GLAZING

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies the following:

1. Glass.

2. Glazing materials and accessories for both factory and field glazed assemblies.

1.2 RELATED WORK

A. Section 08 44 13, GLAZED ALUMINUM CURTAIN WALLS Glazed Curtain Walls: Glazed Curtain Walls.

1.3 LABELS

A. Permanent labels:

1. Locate in corner for each pane.

2. Label in accordance with ANSI Z97.1 and SGCC label requirements.

a. Tempered glass.

1.4 PERFORMANCE REQUIREMENTS

A. General: Design glazing system consistent with guidance and practices presented in the GANA Glazing Manual, GANA Laminated Glazing Manual, and GANA Sealant Manual, as applicable to project. Installed glazing is to withstand applied loads, thermal stresses, thermal movements, building movements, permitted tolerances, and combinations of these conditions without failure, including loss or glass breakage attributable to defective manufacture, fabrication, or installation; failure of sealants or gaskets to remain watertight and airtight; deterioration of glazing materials; unsafe engagement of the framing system; deflections beyond specified limits; or other defects in construction.

B. Glazing Unit Design: Design glass, including engineering analysis meeting requirements of authorities having jurisdiction. Thicknesses listed are minimum. Coordinate thicknesses with framing system manufacturers.

1. Design glass in accordance with ASTM E1300, and for conditions beyond the scope of ASTM E1300, by a properly substantiated structural analysis.

2. Maximum Lateral Deflection: For glass supported on all four edges, limit center-of-glass deflection at design wind pressure to not more than the structural capacity of the glazing unit, the threshold at which frame engagement is no longer safely assured, 1/100 times the short-side length, or 19 mm (0.75 inch), whichever is less.

1.5 DELIVERY, STORAGE AND HANDLING

A. Delivery: Schedule delivery to coincide with glazing schedules so minimum handling of crates is required. Do not open crates except as required for inspection for shipping damage.

B. Storage: Store cases according to printed instructions on case, in areas least subject to traffic or falling objects. Keep storage area clean and dry.

C. Handling: Unpack cases following printed instructions on case. Stack individual windows on edge leaned slightly against upright supports with separators between each.

D. Protect laminated security glazing units against face and edge damage during entire sequence of fabrication, handling, and delivery to installation location. Provide protective covering on exposed faces of glazing plastics, and mark inside as "INTERIOR FACE" or "PROTECTED FACE":

1. Treat security glazing as fragile merchandise and packaged and shipped in export wood cases with width end in upright position and blocked together in a mass. Storage and handling to comply with manufacturer's directions and as required to prevent edge damage or other damage to glazing resulting from effects of moisture, condensation, temperature changes, direct exposure to sun, other environmental conditions, and contact with chemical solvents.

2. Protect sealed-air-space insulating glazing units from exposure to abnormal pressure changes, as could result from substantial changes in altitude during delivery by air freight. Provide temporary breather tubes which do not nullify applicable warranties on hermetic seals.

3. Temporary protections: The glass front and polycarbonate back of glazing are to be temporarily protected with compatible, peelable, heat-resistant film which will be peeled for inspections and re‑applied and finally removed after doors and windows are installed at destination. Since many adhesives will attack polycarbonate, the film used on exposed polycarbonate surfaces is to be approved and applied by manufacturer.

4. Edge protection: To cushion and protect glass clad, and polycarbonate edges from contamination or foreign matter, the four (4) edges are to be sealed the depth of glazing with continuous standard‑thickness thermoplastic rubber tape. Alternatively, continuous channel shaped extrusion of thermoplastic rubber are to be used, with flanges extending into face sides of glazing.

1.6 PROJECT CONDITIONS:

A. Field Measurements: Field measure openings before ordering tempered glass products to assure for proper fit of field measured products.

1.7 APPLICABLE PUBLICATIONS:

A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in text by basic designation only.

B. American Architectural Manufacturers Association (AAMA):

Test Methods for Sealants

810.1-77 Expanded Cellular Glazing Tape

B. American National Standards Institute (ANSI):

Z97.1-14 Safety Glazing Material Used in Building ‑ Safety Performance Specifications and Methods of Test

C. ASTM International (ASTM):

C542-05(2017) Lock-Strip Gaskets

C716-06(2020) Installing Lock-Strip Gaskets and Infill Glazing Materials

C794-18 Adhesion-in-Peel of Elastomeric Joint Sealants

C864-05(2019) Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers

C920-18 Elastomeric Joint Sealants

C964-20 Standard Guide for Lock-Strip Gasket Glazing

D635-18 Rate of Burning and/or Extent and Time of Burning of Self-Supporting Plastic in a Horizontal Position

E84-20 Surface Burning Characteristics of Building Materials

E119-20 Standard Test Methods for Fire Test of Building Construction and Material

E1300-16 Load Resistance of Glass in Buildings

F1233-08(2019) Standard Test Method for Security Glazing Materials and Systems

F1642/F1642M-17 Test Method for Glazing and Glazing Systems Subject to Airblast Loadings

D. Code of Federal Regulations (CFR):

16 CFR 1201-10

Safety Standard for Architectural Glazing Materials

E. Glass Association of North America (GANA):

2010 Edition GANA Glazing Manual

2008 Edition GANA Sealant Manual

2010 Edition GANA Protective Glazing Reference Manual

F. International Code Council (ICC):

IBC

International Building Code

G. Intertek Testing Services – Warnock Hersey (ITS-WHI)

H. National Fire Protection Association (NFPA):

80-16 Fire Doors and Windows

252-12 Fire Tests of Door Assemblies

I. National Fenestration Rating Council (NFRC)

J. Safety Glazing Certification Council (SGCC) 2012:

Certified Products Directory (Issued Semi-Annually).

K. Underwriters Laboratories, Inc. (UL):

9-08(R2009) Fire Tests of Window Assemblies

263-14 Fire Tests of Building Construction and Materials

L. Department of Veterans Affairs:

M. Architectural Design Manual for VA Facilities (VASDM)

PART 2 - PRODUCT

2.1 GLASS

A. Provide minimum thickness stated and as additionally required to meet performance requirements.

1. Provide minimum 6 mm (1/4 inch) thick glass units unless otherwise indicated.

B. Obtain glass units from single source from single manufacturer for each glass type.

C. Clear Glass:

1. ASTM C1036, Type I, Class 1.

2.2 GLAZING ACCESSORIES

A. As required to supplement the accessories provided with the items to be glazed and to provide a complete installation. Ferrous metal accessories exposed in the finished work are to have a finish that will not corrode or stain while in service. Fire rated glazing to be installed with glazing accessories in accordance with the manufacturer’s installation instructions.

B. Spacers: ASTM C864:

1. Channel shape having a 6 mm (1/4 inch) internal depth.

2. Flanges not less 2.4 mm (3/32 inch) thick and web 3 mm (1/8 inch) thick.

3. Lengths: 25 to 76 mm (1 to 3 inches).

4. Shore A hardness of 40 to 50 Durometer.

C. Glazing Tapes:

1. Semi‑solid polymeric based closed cell material exhibiting pressure‑sensitive adhesion and withstanding exposure to sunlight, moisture, heat, cold, and aging.

2. Shape, size and degree of softness and strength suitable for use in glazing application to prevent water infiltration.

3. Complying with AAMA 800 for the following types:

a. AAMA 810.1, Type 1, for glazing applications in which tape acts as the primary sealant.

b. AAMA 810.1, Type 2, for glazing applications in which tape is used in combination with a full bead of liquid sealant.

D. Spring Steel Spacer: Galvanized steel wire or strip designed to position glazing in channel or rabbeted sash with stops.

E. Glazing Clips: Galvanized steel spring wire designed to hold glass in position in rabbeted sash without stops.

F. Glazing Points (Sprigs): Pure zinc stock, thin, flat, triangular or diamond shaped pieces, 6 mm (1/4 inch) minimum size.

G. Glazing Gaskets: ASTM C864:

1. Firm dense wedge shape for locking in sash.

2. Soft, closed cell with locking key for sash key.

3. Flanges may terminate above the glazing‑beads or terminate flush with top of beads.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verification of Conditions:

1. Examine openings for glass and glazing units; determine they are proper size; plumb; square; and level before installation is started.

2. Verify that glazing openings conform with details, dimensions and tolerances indicated on manufacturer is approved shop drawings.

B. Review for conditions which may adversely affect glass and glazing unit installation, prior to commencement of installation. Do not proceed with installation until unsatisfactory conditions have been corrected.

C. Verify that wash down of adjacent masonry is completed prior to erection of glass and glazing units.

3.2 PREPARATION

A. For sealant glazing, prepare glazing surfaces in accordance with GANA Sealant Manual.

B. Determine glazing unit size and edge clearances by measuring the actual unit to receive the glazing.

C. Shop fabricate and cut glass with smooth, straight edges of full size required by openings to provide GANA recommended edge clearances.

D. Verify that components used are compatible.

E. Clean and dry glazing surfaces.

F. Prime surfaces scheduled to receive sealants, as determined by preconstruction sealant-substrate testing.

3.3 INSTALLATION – GENERAL

A. Install in accordance with GANA Glazing Manual, GANA Sealant Manual, IGMA TB-3001, and IGMA TM-3000 unless specified otherwise.

B. Glaze in accordance with recommendations of glazing and framing manufacturers, and as required to meet the Performance Test Requirements specified in other applicable sections of specifications.

C. Set glazing without bending, twisting, or forcing of units.

D. Do not allow glass to rest on or contact any framing member.

E. Glaze doors and operable sash, in a securely fixed or closed and locked position, until sealant, glazing compound, or putty has thoroughly set.

F. Tempered Glass: Install with roller distortions in horizontal position unless otherwise directed.

3.4 INSTALLATION ‑ INTERIOR WET/DRY METHOD (TAPE AND SEALANT)

A. Cut glazing tape to length and install against permanent stops, projecting 1.6 mm (1/16 inch) above sight line.

B. Place setting blocks at 1/4 points with edge block no more than 150 mm (6 inches) from corners.

C. Rest glazing on setting blocks and push against tape to ensure full contact at perimeter of pane or unit.

D. Install removable stops, spacer shims inserted between glazing and applied stops at 600 mm (24 inch) intervals, 6 mm (1/4 inch) below sight line.

E. Fill gaps between pane and applied stop with sealant to depth equal to bite on glazing, to uniform and level line. Sealant type is to be compatible with glazing tape.

F. Trim protruding tape edge.

3.5 REPLACEMENT AND CLEANING

A. Clean new glass surfaces removing temporary labels, paint spots, and defacement after approval by COR.

B. Replace cracked, broken, and imperfect glass, or glass which has been installed improperly.

C. Leave glass, putty, and other setting material in clean, whole, and acceptable condition.

3.6 PROTECTION

A. Protect finished surfaces from damage during erection, and after completion of work. Strippable plastic coatings on colored anodized finish are not acceptable.

4/3/2025