3250FF Spec Lunenburg County Public Schools Central HS.pdf

Section 08520 Aluminum Windows

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3250FF Specifications REV. 12.16.15

PART 1 – GENERAL

1.01 GENERAL PROVISIONS:

A. The Conditions of the Contract and all Sections of Division 1 are hereby made a part of this Section.

B. Coordinate work with that of all construction contractors affecting or affected by work of this Contract. Cooperate with such contractors to ensure steady progress of the work.

C. Pre-Bid Qualifications: All bids must be based on pre-qualified products; to qualify, the bidder must furnish one complete window unit and additional information as shown below ten (10) days prior to bid date.

1. This sample must be identical to the model of the window the bid is based on, with the finish being the only exception.

2. The prospective bidder shall also include in his pre-bid qualification package, copies of the independent laboratory tests which certify that the proposed product meets or exceeds an AW-PG80 (60” x 99”) classification as specified herein and shall show continuing compliance by furnishing a Notice of Product Certification from an Administrator of a Certification Program. Test reports from an independent laboratory showing that the insulated glass, if any, has been tested to the CBA Level, will also be required.

1.02 RELATED WORK:

A. Provide labor, materials and equipment necessary to complete the work of the window portion of the contract, and without limiting the generality thereof shall include: All per attached owner provided bid scope.

1. Removal of existing sash, parting beads, stops and other accessories as required by the proposed replacement system.

2. Removal of other existing construction work as required for the proper installation and operation of the new window system.

3. Removal from site and disposal of all materials, debris packaging, banding and all other materials and equipment.

4. Provide new factory-glazed, thermally broken , aluminum windows, types as specified herein, together with necessary mullions, panning, trim, extenders, operating hardware, all installation hardware and all other accessories as may be required.

5. Treated wood blocking, shims, fillers and fasteners as required for a secure installation.

6. Field observations and measurements of existing openings and conditions.

7. Bidders shall survey conditions of existing prior to bidding.

8. Provide and chink fiberglass insulation between window frames and adjacent construction.

9. Proper sealing of all panning or compensation channel joints within each window assembly, per AAMA 803.3-08, and chink fiberglass insulation between window frames and accessories.

10. Sealing of entire exterior perimeter and interior of window units after installation, per AAMA 808.3-08.

11. Furnishing of any extra materials as specified herein and or per owners bid scope.

1.03 TESTING AND PERFORMANCE REQUIREMENTS:

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A. Standards: Except as otherwise indicated, requirements for all aluminum windows, terminology and standards of performance, and fabrication workmanship are those specified and recommended in AAMA/WDMA/CSA 101/I.S.2/A440-08 and applicable general recommendations published by AAMA, ASTM and the AA.

B. Window Performance Requirements: Windows shall conform to specified standards or those specified herein. The test unit shall be the minimum gateway size of 60” x 99” and have a rating of AW-PG80 or better.

1. Air Infiltration: In accordance with AAMA/WDMA/CSA 101/I.S.2/A440-08, the air infiltration test should be completed after the AAMA 910 life cycle test. Per ASTM E283 air infiltration must not exceed 0.1cfm/ft2when tested at a static air pressure of 6.24 psf.

2. Water Resistance: Using a static pressure of 12.0psf, a water flow rate equal to five gallons of water per hour, per square foot of window area, should be cycled for five minutes of water on, then one minute off, for a total of four cycles, in accordance with ASTM E547. In addition, the test specimen will also be subjected to one 15 minute cycle at the same flow rate and pressure, per ASTM E331. During each test method, no water shall pass the interior plane of the window frame and there shall be no uncontrolled leakage.

3. Uniform Load Deflection: The unit shall be subjected to a uniform load of 80psf to the both the positive (exterior) and negative (interior) surfaces, and no member shall deflect more than L/175 of the unsupported span.

4. Uniform Structural Load: A minimum interior and exterior load of 120psf shall be applied to the entire surface of the test specimen. After completion of each load, there shall be no glass breakage, permanent damage of fasteners, hardware, or any other damage causing the window to be inoperable. Permanent deformation of frame / sash members shall not exceed 0.2% of its span.

5. Thermal Computer Simulations: Simulations units should be the prescribed 47 ¼” x 59” non-residential size. Glazing for the specified unit shall be 1” insulated glass composed of ¼” Clear Glass with Cardinal LowE 366 #2 (or equivalent) – ½” Argon filled airspace – ¼” Clear. Test results shall meet or exceed the following test results:

a) Thermal Transmittance (per NFRC 100-2004)

b) Solar Heat Gain Coefficient (per NFRC 200-2004)

c) Condensation Resistance (per NFRC 500-2004)

1.04 QUALITY ASSURANCE:

A. Provide test reports from an independent laboratory certifying that the performance for air infiltration, water resistance, uniform structural load, and condensation resistance, has been met or exceeds the criterion as set forth herein.

1.05 REFERENCES:

A. American Architectural Manufacturers Association (AAMA), American Society for Testing and Materials (ASTM), American National Standards Institute (ANSI), Aluminum Association (AA), National Window & Door Association (NWDA).

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1.06 SUBMITTAL REQUIREMENTS:

A. General: Provide submittals pursuant with the following:

1. Product Data: Submit manufacturer's specifications, any recommendations and standard

Product details for aluminum window units, including independent laboratory certified test report as necessary to show compliance with requirements.

2. Shop Drawings: Submit shop drawings, including typical unit elevations and showing full scale details of product's head, jamb and sill being supplied and typical installation detail.

Show anchor locations and other components not included in manufacturer's standard literature. Call out type of glazing, screening, and window finish that will be supplied.

3. Samples: Submit samples as follows:

a) Three samples of each required finish, on a 3 inch long section of an extruded shape or flat aluminum stock.

b) Additional samples as requested by the Owner, to show fabrication techniques, workmanship, type of component parts and the type, design or finish of hardware proposed.

1.07 PRODUCT DELIVERY, STORAGE AND HANDLING:

A. Store and handle windows, hardware and all related items in strict compliance with the manufacturer's instructions.

B. Protect and ensure windows and all accessories and related materials adequately against damage from the elements, construction activities and other hazards before, during and after installation.

1.08 PROJECT WARRANTIES:

A. Manufacturer’s Warranties: Submit written warranties from window manufacturer for the following:

1. Windows: Windows furnished shall be certified as fully warranted against any defects in material or workmanship, under normal use and service, for a period of one (2) year from date of fabrication.

2. Finish: The pigmented organic finishes on windows and component parts shall comply fully with requirements of AAMA 2604-02, for pigmented organic coating and fully warranted against chipping, peeling, cracking and blistering for a period of ten (10) years.

3. Glass: Any insulated glass shall be warranted from visual obstruction, due to internal moisture, for a period of ten (10) years.

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PART 2 – PRODUCTS

2.01 GENERAL:

A. Manufacturer: Subject to compliance with Contract Documents and specifications, provide the following:

1. Model 3250 Fixed Frame AW-PG80 (60” x 99”) windows as manufactured by All

Seasons Architectural Windows Mfg.

2. St. Cloud Window

3. Desco Architectural Windows

B. Thermal Break Construction: Fabricate aluminum window units with an integral low-conductance polyurethane thermal barrier, located mid-frame between exterior and interior of the window, and in a manner which eliminates direct metal-to-metal contact.

C. Window Construction: Provide manufacturer's standard construction, which has been in use on similar window units for a period of not less than ten years, and has been tested to demonstrate resistance to thermal conductance and condensation and has been tested to show adequate strength for this purpose.

2.02 FABRICATION:

A. Aluminum Extrusions: All extruded sections shall be of 6063-T5 aluminum alloy and temper recommended by window manufacturer for strength, corrosion resistance, and application of required finish. Shall meet 22,000 psi ultimate tensile strength, yield of 16,000 psi.

B. Fasteners: Aluminum, stainless steel, or other materials warranted by fastener manufacturer to be non-corrosive and compatible with aluminum window members, and related components of window units.

1. Do not use exposed fasteners, except where unavoidable.

2. Provide stainless steel Phillips flathead machine screws for any exposed fasteners, where required, or tamperproof fasteners.

3. Locate all fasteners so as not to bridge the thermal break.

C. Anchors, clips and window accessories, depending on strength and corrosion-inhibiting requirements, fabricate such items of aluminum, stainless steel or hot-dip zinc coated steel or iron, complying with ASTM A123/A123M-08 or ASTM B633-07.

D. Glazing with cured rubber tape, expanded cellular glazing tape or units may be wet glazed with a high quality silicone. Fixed lite shall be glazed using aluminum glazing beads, finished to match frame.

E. Sealant: Unless otherwise indicated for sealants required within fabricated window units, provide elastomeric type as recommended by window manufacturer for joint size and movement, to remain permanently elastic, non-shrinking and non-migrating. Provide product complying with AAMA 803.3-08 and/or 808.3-08.

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2.03 WINDOW CONFIGURATION:

A. General: The following defines types of fixed windows required and specifies the minimum provisions for each type.

B. AW-PG80 (60” x 99”) Fixed Frame aluminum windows with integral nail fin and no operating vent / sash. Provide unit which, may be re-glazed and serviced from the interior of the building.

2.04 FABRICATION AND ACCESSORIES:

A. General: Provide manufacturer's standard fabrication and accessories that comply with the Scope of Work. All extrusions and components necessary to complete the window assembly should be free of deformations or defects.

B. Window Members including any muntin bars shall be of aluminum.

1. The master frame shall be no less than 3 1/4” in depth.

2. The minimum wall thickness should be no less than 0.062” and abide by the tolerances set forth by the Aluminum Association.

C. Thermal Break: The thermal barrier shall provide a continuous uninterrupted thermal break around the entire perimeter of the frame and shall not be bridged by conductors.

D. Hardware having component parts, which are exposed, shall be of aluminum, stainless steel or other non-corrosive materials and compatible with aluminum. Cadmium or zinc-plated steel, if used, must be in accordance with ASTM Specification B633-07 or B766-86(2008).

E. Frame shall be assembled in a secure and workmanlike manner to perform as specified herein.

All joints of the main frame shall be of butt type, coped, and neatly joined by means of stainless steel screws anchored in an integral boss. All joinery of main frame shall be sealed with joint sealant per AAMA 803.3-92.

F. Structural Members: When mullions occur, whether they are joined by integral mullions, or independent mullions, or by a combination of frame members, the resulting members must be capable of withstanding the specified design pressures specified herein and to a maximum deflection of L/175 of its span. When integral or independent mullions are used to join windows, evidence of compliance may be by mathematical calculations.

G. Glazing:

1. All glazing and insulated panels shall be glazed at the factory as follows:

a) 1” – (1/4”) Solarbronze Tempered Vitro Solorban 70 LowE Surface #2- Argon, Black TPS Spacer- (1/4”) Clear Tempered.

b) All insulated glass units shall be tested, certified and carry the respective CBA level certification. Any and all safety glazing will have “bug” visible on interior surface.

c) Test reports supporting CBA certification shall be submitted upon request.

2. The fixed lite shall have aluminum glazing beads finished to match, no vinyl / plastic beads

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3. Insulated Panels: Shall be 1” Mapes Panel- Embossed Aluminum- Mapes Standard

Bronze Exterior- Tempered hardware substrate with Polystyrene Core- Embossed Aluminum- Mapes Standard Bronze Interior.

H. Accessories: If indicated in the Scope of Work, panning shall be of a receiver type, extruded and finished to match, and;

1. Panning extrusions shall be site assembled, secured at the corners with cadmium plated steel, or stainless steel screws in integral screw boss with the joints back sealed per AAMA 803.3-08. Exposed fasteners are not acceptable on the exterior of pan system.

2. Interior trims: Shall be as depicted on drawings and provided in extruded profiles only. No break form shapes are permissible without prior approval.

3. Exterior mullion covers, when they occur, shall be of extruded profiles, finished to match window system.

4. Receptor Systems, if indicated on drawings, shall be a two piece snap together receptor system and shall serve to anchor windows in place. The receptor shall be extruded and finished to match window with polyurethane thermal break (or equivalent). The receptor system shall be at head and jamb or head only, as is indicated on the drawings. An optional extruded aluminum subsill may be called for on the drawings and must also offer thermal break design.

2.05 ALUMINUM FINISHES:

A. Provide organic coating of type and color indicated or selected by Architect. Comply with AAMA 2604-02. Application of finish must be by window manufacturer for all components to ensure match. Standard 2604 Paint Finish.

PART 3 – EXECUTION

3.01 - PREPARATION

A. Prepare openings and chink with insulation, if necessary, to avoid excessive air infiltration from wall cavity; and to be in tolerance, plumb, level and blocked with treated lumber as necessary to provide for secure anchoring in accordance with industry standards and the approved shop drawings.

3.02 - INSTALLATION

A. Install windows in accordance with manufacturer's recommendations and approved shop drawings, using skilled craftspeople that have demonstrated a successful history of installing commercial window systems for at least five years. If units are to be installed in EIFS veneer, General Contractor shall insure that openings are properly back-wrapped and prepared per EIMA guidelines and current procedures prior to window installation.

B. Provide required treated lumber for blocking and support, securely fasten and set windows plumb, square, and level without twist or bow. Owner may require calculations for anchors shear force and/or placement.

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C. Apply sealant per AAMA 800-08 and 808.3-08 and pursuant with sealant manufacturer's recommendations, at all exterior joinery. Wipe off any excess sealant and tool all sealant leaving exposed surface clean and smooth.

3.03 - ADJUSTING AND CLEANING

A. Installing contractor shall clean all aluminum surfaces promptly after installation, following either AAMA 609-02 and/or 610.1-79 standards. Comply with AAMA CW-10-04. Report any shipping damages in writing to window manufacturer and the Owner with 72 hours of receipt.

B. Installing contractor shall clean glass, after installation, to remove any labels, excess glazing compound or other sealant and any other foreign substances. Initiate protection and precautions as required ensuring that windows are not misused or abused by other Trades.

End of Section