SECTION 08520

ALUMINUM WINDOWS

PART 1 GENERAL

SECTION INCLUDES

Extruded aluminum windows with [fixed] [and] [operating] sash; glass [shop] [site] glazed [, including infill panels].

Operating hardware and insect screens.

[Perimeter sealant.]

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [_____-__________]: Placement of supporting anchors.

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section [_____-__________]: Supply of [supporting anchors] [________] for placement by this section.

RELATED SECTIONS

Section [______-____________]: Preparation of adjacent work to receive work of this section.

Section 05500 - Metal Fabrications: Steel lintels.

[Section 06112 - Framing and Sheathing: Framed openings.]

Section 06114 - Wood Blocking and Curbing: Wood perimeter shims.

Section 07190 - Vapor and Air Barriers: Perimeter vapor and air seal between window frame and adjacent construction.

[Section 07900 - Joint Sealers: Perimeter sealant and back-up materials.]

Section 08410 - Aluminum Entrances and Storefronts: Operable sash within glazing system.

Section 08800 - Glazing.

Section 08920 - Glazed Aluminum Curtain Wall: Operable sash within glazing system.

Section 08952 - Translucent Panel System: Operable sash within glazing system.

REFERENCES

AAMA 101 - Specifications for Aluminum Prime Windows and Sliding Glass Doors.

AAMA 603.8 - Performance Requirements and Test Procedures for Pigmented Organic Coatings on Extruded Aluminum.

AAMA 605.2 - Specification for High Performance Organic Coatings on Architectural Extrusions and Panels.

AAMA 606.1 - Specifications and Inspection Methods for Integral Color Anodic Finishes for Architectural Aluminum.

AAMA 607.1 - Specifications and Inspection Methods for Clear Anodic Finishes for Architectural Aluminum.

AAMA 608.1 - Specification and Inspection Methods for Electrolytically Deposited Color Anodic Finishes for Architectural Aluminum.

ASTM A386 - Zinc Coating (Hot Dip) on Assembled Steel Products.

ASTM B209 - Aluminum and Aluminum-Alloy Sheet and Plate.

ASTM B221 - Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and Tube.

ASTM E283 - Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors.

ASTM E330 - Structural Performance of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.

ASTM E331 - Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.

FS L-S-125 - Screening, Insect, Nonmetallic.

FS RR-W-365 - Wire Fabric (Insect Screening).

SSPC - Steel Structures Painting Manual.

SYSTEM DESCRIPTION

Windows:	[Tubular] [Single thickness] aluminum sections, shop fabricated, factory pre-finished, vision glass, [infill panels,] related flashings, anchorage and attachment devices.

Configuration: [Fixed non-operable] [and] [outward projecting bottom] [inward projecting top] [outward opening, side hinged] [outward openings top hinged] [inward opening, bottom hinged] [horizontal sliding] [________________] sash.

Glazing: [Interior] [Exterior].

PERFORMANCE REQUIREMENTS

Design and size components to withstand dead and live loads caused by positive and negative wind pressure acting normal to plane of wall [as calculated in accordance with [____] code] [to a design pressure of [____] lb/sq ft ([____] KPa) and a suction of [____] lb/sq ft ([____] KPa)] [and] [as measured in accordance with ASTM E330].

Limit member deflection to [flexure limit of glass] [1/200] [________]; with full recovery of glazing materials.

System to accommodate, without damage to components or deterioration of seals, movement between window and perimeter framing, deflection of lintel.

Limit air leakage through assembly to [0.35] [____] cfm/min/sq ft ([0.002] [____] cu m/s/sq m) of wall area, measured at a reference differential pressure across assembly of [1.57] [____] psf ([75] [____] Pa) as measured in accordance with [ASTM E283] [________].

Vapor Seal with Interior Atmospheric Pressure of 1 inch (25 mm) sp, 72 degrees F (22 degrees C), 40 Percent RH: No failure.

****** [OR] ******

Water Leakage: None, when measured in accordance with [ASTM E331] [________] with a test pressure difference of [2.86] [____] lbf/sq ft ([136.85] [____] N/sq m).

Maintain continuous air and vapor barrier throughout assembly, primarily in line with [inside] pane of glass [and inner sheet of infill panel] and heel bead of glazing compound.

Drain water entering joints, condensation occurring in glazing channels, or migrating moisture occurring within system, to the exterior by a weep drainage network.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate opening dimensions, framed opening tolerances, affected related work; installation requirements; and [________].

Product Data: Provide component dimensions, anchorage and fasteners, glass, internal drainage details and [________].

Submit [two] [_______] samples [____x____] inches ([____x____] mm) in size illustrating window frame section [mullion section] [screen and frame], pre-finished aluminum surfaces, [glass [units],] [infill panels,] [glazing materials].

Submit [two] [____] samples of operating hardware.

Manufacturer's Certificate: Certify that [Products] [________] meet or exceed [specified requirements] [___________________].

QUALITY ASSURANCE

Perform Work in accordance with [AAMA 101] [________].

QUALIFICATIONS

Manufacturer [and Installer]: Company specializing in manufacturing [commercial] [institutional] aluminum windows with minimum [three] [_______] years [documented] experience.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing work of this Section, under provisions of Section [01039.] [________.]

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Protect pre-finished aluminum surfaces with [wrapping] [stripable coating]. Do not use adhesive papers or sprayed coatings which bond when exposed to sunlight or weather.

ENVIRONMENTAL REQUIREMENTS

Do not install sealants when ambient temperature is less than [40] [____] degrees F ([5] [____] degrees C).

Maintain this minimum temperature during and after installation of sealants.

FIELD MEASUREMENTS

Verify that field measurements are as indicated on [shop drawings] [Drawings].

***** [OR] *****

Verify that field measurements are as instructed by the manufacturer.

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

Other acceptable manufacturers offering equivalent Products.

[______________________________] Product [_________].

[______________________________] Product [_________].

[______________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

MATERIALS

Extruded Aluminum: [ASTM B221] [________]; [6063] [________] alloy, [T5] [____] temper.

Sheet Aluminum: [ASTM B209] [________]; [________] alloy, [________] temper.

Steel Sections: Profiled to suit mullion sections.

Fasteners:	[Stainless] [Galvanized] steel.

Shop and Touch-Up Primer for Steel Components: [SSPC 15, Type 1, red oxide] [________].

Touch-Up Primer for Galvanized Steel Surfaces: SSPC 20, zinc rich type] [________].

COMPONENTS

Frames: [____] inch ([____] mm) wide x [____] inch ([____] mm) deep profile, of [____] inch ([____] mm) thick section; [thermally broken with interior portion of frame insulated from exterior portion] [non-thermally broken]; [flush] [applied] glass stops of [snap-on] [screw fastened] type.

Reinforced Mullion: [____] inch ([____] mm) profile of extruded aluminum with integral reinforcement of shaped steel structural section.

Sills: [____] inch ([____] mm) thick, [extruded] [brake formed] aluminum; sloped for positive wash; fit under sash [leg] [________] to [1/2] [____] inch ([12] [____] mm) beyond wall face; one piece full width of opening [jamb angles to terminate sill end].

Infill Panel: Internally reinforced, glazing edge [sealed] [unsealed] permitting internal air movement to glazing space, outside air barrier line:

Panel Sheet:	[____] inch ([____] mm) thick [aluminum] [________].

****** [OR] ******

Outer Face: [____] inch ([____] mm) thick [aluminum] [________________].

Core: [Glass fiber] [Rigid polystyrene] [Rigid polyurethane] [________] insulation core with R value of [____] (RSI of [____])

Inner Face: [____] inch ([____] mm) thick [aluminum] [________________].

Insect Screens: [FS RR-W-365, woven [copper] [aluminum] [________] mesh] [FS L-S-125, woven plastic mesh]; [14/18] [____] mesh size.

Operable Sash Weather Stripping:	[Wool pile] [Nylon pile] [Resilient PVC] [________]; permanently resilient, profiled to effect weather seal.

Fasteners:	[Stainless] [Galvanized] steel.

Window Washing Anchors: [________________].

GLASS AND GLAZING MATERIALS

Glass and Glazing Materials:	As specified in Section 08800 of Types described below:

Glass in Exterior Lights: Type [________].

[Glass Infill Panels: Type [________].]

SEALANT MATERIALS

Sealant and Backing Materials: As specified in Section 07900 of Types described below.

Perimeter Sealant:	Type [________].

Sealant Used Within System (Not Used for Glazing): Type [________].

HARDWARE

Sash lock: [Lever handle with cam lock] [________]. [Provide [____] feet ([____] mm) long pole handle.]

***** [OR] *****

Operator: [Lever action handle] [Geared rotary handle] fitted to projecting sash arms with limit stops.

Projecting Sash Arms: [Cadmium] [Zinc] plated steel, friction pivot joints with nylon bearings, removable pivot clips for cleaning.

Pulls:	[________].

Sash lock: [Lever handle with cam lock] [________].

Threshold: [Extruded aluminum [thermally broken]], sloped to exterior.

Bottom Rollers: [Stainless steel] [Nylon] [________], adjustable.

Limit Stops: Resilient [rubber] [__________].

Insect Screen Frames: Rolled [aluminum] [steel], of rectangular sections with mesh set into frame and secured. Fit frames with adjustable roller hardware.

FABRICATION

Fabricate components with minimum clearances and shim spacing around perimeter of assembly, yet enabling installation and dynamic movement of perimeter seal.

Accurately fit and secure joints and corners. Make joints flush, hairline, [and weatherproof].

Prepare components to receive anchor devices. Fabricate anchors.

Arrange fasteners and attachments to ensure concealment from view.

Prepare components with internal reinforcement for operating hardware.

Provide internal reinforcement in mullions with [galvanized] [primed] steel members to maintain rigidity.

Permit internal drainage weep holes and channels to migrate moisture to exterior. Provide internal drainage of glazing spaces to exterior through weep holes.

Assemble insect screens of rolled [aluminum] [steel] rectangular [tubular] sections. Miter and reinforced frame corners. Fit mesh taught in frame into frame and secured. Fit frame with [[four] [______] spring loaded steel pin] [________] retainers.

[Double] weatherstrip operable units.

[Shop glaze window units.]

FINISHES

Finish coatings to conform to [AAMA 603.8] [AAMA 605.2] [AAMA 606.1] [AAMA 607.1] [AAMA 608.1].

Exterior Exposed Aluminum Surfaces: AAMA [A41] [A42] [A43] [A44] anodized to [215-R1] [____] thickness, prepared with a [mechanical M[____]] [chemical C[____]] pre-treatment, anodized to [clear] [________] color.

****** [OR] ******

Exterior Exposed Aluminum Surfaces: [[Exterior] [Hardcoat] [Two step] anodized to [clear] [________] color, to [0.0007] [____] inch ([0.018] [____] mm) thickness] [Organic coating to [________] color [as selected]].

Exterior Exposed Infill Panel Surfaces: AAMA [A41] [A42] [A43] [A44] anodized to [215-R1] [____] thickness, prepared with a [mechanical M[____]] [chemical C[____]] pre-treatment, anodized to [clear] [________] color.

****** [OR] ******

Exterior Exposed Infill Panel Surfaces: [[Exterior] [Hardcoat] [Two step] anodized to [clear] [________] color, to [0.0007] [____] inch ([0.018] [____] mm) thickness.] [Organic coating to [________] color [as selected]].

Interior Exposed Aluminum Surfaces: AAMA [A41] [A42] [A43] [A44] anodized to [215-R1] [____] thickness, prepared with a [mechanical M[____]] [chemical C[____]] pre-treatment, anodized to [clear] [________] color.

****** [OR] ******

Interior Exposed Aluminum Surfaces: [[Interior] [Hardcoat] [Two step] anodized to [clear] [________] color, to [0.0007] [____] inch ([0.018] [____] mm) thickness] [Organic coating to [________] color [as selected]].

Interior Surface of Infill Panel Surfaces: [Field painted in accordance with Section 09900] [Anodized to [clear] [________] color] [Enamelled to [________] color [as selected]].

Operator: Enamelled to [________] color [as selected].

Concealed Steel Items: [Galvanized in accordance with ASTM A386 to [2.0] [____] oz/sq ft ([610 [____] gm/sq m)] [Primed with iron oxide paint].

Apply [one coat] [[____] coats] of bituminous paint to concealed aluminum [and steel] surfaces in contact with cementitious or dissimilar materials.

PART 3 EXECUTION

EXAMINATION

Verify site opening conditions under provisions of Section [01039.] [________.]

Verify wall openings and adjoining air and vapor seal materials are ready to receive work of this Section.

INSTALLATION

Install window frames, [glass and glazing] [and hardware] in accordance with manufacturers instructions.

****** [OR] ******

Install curtain wall system in accordance with AAMA 101 - Specifications for Aluminum Prime Windows and Sliding Glass Doors.

Attach window frame and shims to perimeter opening to accommodate construction tolerances and other irregularities.

Align window plumb and level, free of warp or twist. Maintain dimensional tolerances, [aligning with adjacent work].

Install sill [and sill end angles].

Provide thermal isolation where components penetrate or disrupt building insulation. Pack fibrous insulation in shim spaces at perimeter of assembly to maintain continuity of thermal barrier.

Coordinate attachment and seal of perimeter air and vapor barrier materials.

Install operating hardware.

Install glass [and infill panels] in accordance with Section 08800, to [glazing method required to achieve performance criteria] [exterior [wet/dry] [________] method of glazing].

Install perimeter sealant [to method required to achieve performance criteria] [Type [____], backing materials, and installation criteria in accordance with Section 07900].

TOLERANCES

Maximum Variation from Level or Plumb: [0.06] [____] inches every 3 ft ([1.5] [____] mm/m) non-cumulative or [0.5] [____] inches per 100 ft ([12] [____] mm/30 m), whichever is less.

ADJUSTING

Adjust work under provisions of Section [01700.] [________.]

Adjust operating hardware for smooth operation.

CLEANING

Clean work under provisions of [01700.] [________.]

Remove protective material from pre-finished aluminum surfaces.

Wash down surfaces with a solution of mild detergent in warm water, applied with soft, clean wiping cloths. Take care to remove dirt from corners. Wipe surfaces clean.

Remove excess sealant by moderate use of mineral spirits or other solvent acceptable to sealant manufacturer.

SCHEDULES

West Elevation (Opening No. W2):	Dark Bronze anodized finish; 36 x 60 inch nominal size including arch; bronze tint glass.

Other Elevations (Opening No. W3, W4 and W5): Light Bronze anodized finish; 42 x 42 inch nominal size; clear glass.

END OF SECTION