MOW_Window_Specification_0002.pdf

MOW WINDOWS

PART 1 - GENERAL

1.1 SUMMARY

A. The Conditions of the Contract, and all Sections the Statement of Work, are hereby made a part of this Section.

B. Section Includes: Factory glazed windows complete with reinforcing, shims, anchors, and attachment devices.

1.2 SYSTEM DESCRIPTION

A. General: In addition to requirements shown or specified comply with sitelines and profiles indicated on contract documents.

B. Window Replacement Requirements:

1. Provide new factory glazed, thermally broken, aluminum windows, types as specified herein, together with necessary mullions, panning, trim, expanders, installation hardware and all other accessories as required.

2. Provide insulated panels and frames as required in selected locations.

3. Provide treated wood blocking, fillers and nailers as required for secure installation.

Contractor shall be responsible for providing new blocking for portions of same that are deteriorated.

4. Provide fiberglass insulation between window frames and adjacent construction where applicable.

5. Seal all joints within each window assembly.

6. Seal entire exterior perimeter of window units after installation.

7. Provide field observations and measurements of existing openings and conditions.

8. Furnish and deliver extra materials as specified.

C. Design Requirements:

1. Manufacturer/subcontractor is responsible for designing system, including installation instructions and necessary modifications to meet specified requirements and maintain visual design concepts.

2. Requirements shown by details are intended specifically to establish dimension of unit, sight lines and profiles of members.

3. Provide assemblies free from rattles, wind whistles and noise due to thermal and structural movement and wind pressure.

4. Installation instructions are to take into account specified site peculiarities and expansion and contraction movements so there is no possibility of loosening, weakening or fracturing connection between units and building structure or between units themselves.

5. Provide for expansion and contraction due to structural movement without detriment to appearance or performance.

6. Evacuate water without infiltration to interior from exterior face of wall, water entering joints, and condensation occurring within windows, by drain holes and gutters of adequate size or other acceptable method.

7. Provide concealed fastening wherever possible.

D. Performance Requirements: Requirements for aluminum windows, terminology and standards of performance, and fabrication and workmanship are those specified and recommended in AAMA/WDMA/CSA 101/I.S.2/A440-08 and applicable general recommendations published by AAMA. Conform to more stringent of specified AAMA standards and following:

1. Performance Class and Grade: LC-PG-30

2. Air Infiltration Test: Not exceed 0.10 cubic feet per minute per square foot when tested at a pressure of 6.24 psf. Perform tests in accordance with ASTM E 283 with the sash in a closed and locked position.

3. Water Resistance Test: Subject window unit to a water resistance test in accordance with ASTM E 331 and E547 with no water passing the interior face of the window frame and no leakage as defined in the test method. Mount the glazed unit in its vertical position continuously supported around the perimeter and the sash placed in the fully closed and locked position. When a static pressure of 12 pounds per square foot has been stabilized, apply five gallons of water per square foot of window area to the exterior face of the unit for a period of 15 minutes.

4. Uniform Load Deflection Test: ASTM E 330 at 30 pounds per square foot.

5. Uniform Load Structural Test: Apply a minimum exterior and interior uniform load of 45 pounds per square foot to the entire outside surface of the test unit. Maintain this test load for a period of 10 seconds. Results: No glass breakage, permanent damage of fasteners, hardware parts, support arms, actuating mechanisms, or any other damage causing the window to be inoperable. And no permanent deformation of any frame or vent member in excess of 0.2 percent of its span.

6. “U” Factor: Perform computer simulation in accordance with ANSI/NFRC 100-2017 on a 1200mm (47”) x 1500 mm (59”) maximum size window resulting in a whole window U- Factor of no more than 0.33 using soft coat low-E insulating glass, argon and a warm edge spacer.

7. Testing: Where manufacturer's standard window units comply with the above performance requirements and have been tested by an AAMA certified independent laboratory showing compliance with such tests.

1.3 SUBMITTALS

A. Product Data: Submit manufacturer's specifications, recommendations and standard details for aluminum or fiberglass window units.

B. Shop Drawings: Submit shop drawings, including location floor plans or exterior wall elevations showing all window openings, typical unit elevations at 1/4 inch scale, and half size detail sections of every typical composite member. Show anchors, hardware, operators and other components as appropriate if not included in manufacturer's standard data. Include glazing details and standards for factory glazed units.

C. Samples:

1. Submit one sample of each required aluminum finish, on 3 x 3 inch long sections of extrusion shapes or aluminum sheets as required for window units.

2. Submit additional samples to show fabrication techniques, workmanship of component parts, and design of hardware and other exposed auxiliary items.

D. Certifications: Submit certified test laboratory reports by independent laboratory substantiating performance of system. Include other supportive data as required or as necessary.

1.4 PRODUCT DELIVERY, STORAGE AND HANDLING

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

B. Protect units adequately against damage from the elements, construction activities and other hazards before, during and after installation.

1.5 WARRANTY

A. Manufacturer's Warrantees: Submit written warrantees from window manufacturer for the following:

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

2. Finish: The pigmented organic finishes on exposed surfaces of windows and component parts (such as panning, trim, mullions and the like) are certified as complying fully with requirements of AAMA 2604 for pigmented organic coating and fully warranted against chipping, peeling, cracking or blistering and fading for a period of ten (10) years from date of installation.

3. Insulated Glass: Warranted from visual obstruction due to internal moisture for a period of twenty (20) years.

1.6 MAINTENANCE MATERIAL

A. Option for additional materials: Furnish and deliver to Owner, at the project location, extra material for maintenance/replacement as listed.

1. Touch-up Paint: Hartford Green

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis of Design: Series SR6700 fixed window as manufactured by Graham Architectural Products, York, PA., utilizing profiles as indicated on bid documents.

B. Thermal Barrier: Provides a continuous uninterrupted thermal barrier around the entire perimeter of the frame and all sash and not be bridged by any metal conductors at any point. Provide manufacturer's standard construction which has been in use on similar window units for a period of not less than three years, has been tested to demonstrate resistance to thermal conductance and condensation and has been tested to show adequate strength per AAMA 505.

C. Pre-Bid Qualifications:

1. All bids must be based on pre-qualified products. To qualify, the bidder must furnish one complete typical project size window unit 10 days prior to the time set for bids.

Accompanying the sample will be certified test reports from an accredited AAMA Laboratory verifying that the performance of the product meets or exceeds the criteria listed in section 1.2.D .

2. This sample must be a true and accurate representation of the window the bid is based on with the finish being the only exception. No verbal approvals will be given. Each submitter will be notified in writing of acceptance or rejection.

3. Maintenance manuals accompany the product sample being submitted for approval.

4. Sight lines to match the base product specified and the project bid documents..

5. The qualified bidder must verify that the bidder has been involved with the installation of this type of product in a minimum of 5 projects of similar scope and quality.

2.2 MATERIALS

A. Aluminum Extrusions: Alloy and temper recommended by window manufacturer for strength, corrosion resistance and application of required finish, but not less than 22,000 psi ultimate tensile strength, a yield of 16,000 psi. Comply with ASTM B 221.

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

1. Do not use exposed fasteners on exterior except where unavoidable for application of hardware. Match finish of adjoining metal.

2. Provide non-magnetic stainless steel, tamper-proof screws for exposed fasteners, where required, or special tamper-proof fasteners.

3. Locate fasteners so as not to disturb the thermal barrier construction of windows.

C. Anchors, Clips And Window Accessories: Depending on strength and corrosion-inhibiting requirements, fabricate units of aluminum, non-magnetic stainless steel or hot-dip zinc coated steel or iron complying with ASTM A 123.

D. Compression Glazing Strips and Weatherstripping: At manufacturer's option, provide neoprene gaskets, PVC gaskets, or expanded neoprene gaskets..

E. Sealant:

1. Unless otherwise indicated for sealants required within fabricated window units or for perimeter sealants between window units and surrounding construction, 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 Specification 803 and 808.

2.3 WINDOW TYPES (OPERATION)

A. Fixed Aluminum Windows or Panel Frames (F):

1. No special hardware required.

B. Splicing is not permitted along entire length of the jamb

2.4 FABRICATION AND ACCESSORIES

A. Window Material:

1. Windows and Muntin Bars: Aluminum or fiberglass

2. Secondary Members (friction tabs, shoes, weatherstripping guides, etc.): Aluminum, fiberglass or a material compatible with aluminum or fiberglass.

B. Thermal Barrier: Provides a continuous uninterrupted thermal barrier around the entire perimeter of the frame and all sash and shall not be bridged by any metal conductors at any point.

C. Construction:

1. Assembly: Miter and seal vents with a non-hardening mastic, forming a watertight joint.

Structurally reinforce corners of the vent with aluminum gusset blocks and chemically weld, followed by crimping. Mechanical fasteners are not allowed.

2. Cope corners of the frame with mechanical fasteners in each corner forming a water-tight joint.

D. Mullions - Other structural members: When mullion units occur, whether they are joined by integral mullions, independent mullions or by a combination of frame members, the resulting members must be capable of withstanding the load outlined under Uniform Load specified load requirements, without deflecting more than 1/175th of its span. When independent or integral mullions are used to join windows, the mullions shall contain a thermal barrier as specified.

Sightline shall provide match to existing sightlines. Evidence of compliance may be by mathematical calculations.

E. Glazing:

1. Pre-glaze all units (except insulated panels as required for installation) at the factory with insulated glass as follows:

1. Typical Insulated Glass: Cardinal Low E 272 or equal. Overall thickness of 1 inch with two lites of tempered 3/16 inch or thicker if size and loading require with a Low E coating on the #2 surface.

(1) Primary Sealant: Polyisobutylene applied to the edge of the spacer.

(2) Secondary Sealant: Silicone.

(3) Air Spacer: Continuous metal spacer with formed corners and an in-line connector, containing desiccant.

(4) Argon filled air space

(5) Performance Criteria:

(a) Visible Light Transmittance: 70%

(b) U Value: .25

(c) Solar Heat Gain Co-efficient: .40

(6) Provide obscure glass in restrooms

2. Glaze units to allow for glass replacement without the use of special tools.

F. Weather Protection:

1. Provide means of drainage for water and condensation which may accumulate in members of window units by use of weeps in main frame member.

2. Do not position other material in such a manner as to obstruct the weep holes function.

G. Simulated True Muntin: The simulated muntin is a triple muntin system to simulate a true muntin appearance from exterior. Align muntins within the windows system and from window to window within an industry acceptable tolerance.

1. Exterior Grids: Finish matching the window system. Profile to match existing windows.

Two piece snap grids are not permitted as a substitute.

1. Unglazed openings at Louvers shall have exterior grids with reinforcement tube extrusion added at all horizontal grids which span full with of the opening, as indicated in drawings and as required. . The tube reinforcement shall be screw attached to a perimeter frame which is set into the window glazing pocket as indicated on drawings.

Reinforcement shall be removable to allow for future glazing.

2. Interior Grid: 1.125” x 0.062” aluminum bar or profile grid as applicable, finish to match window system.

3. Muntin In-between Glass: Aluminum muntin in glass simulates glass perimeter spacer between interior and exterior applied grid. Machine and mechanically fasten the intersections of muntin grids. Fasten the grid to the sloped perimeter vent at each contact point. Color: Black

2.5 CASING COVER SYSTEM: (Panning, Trims, Receptors, Mullions, Sills etc.)

A. Exterior Casing Covers (Panning, Receptors, Subsills, Sills, etc.): Provide extruded prime alloy aluminum 6063-T5 no less than nominal 0.078 inch wall thickness. Casing covers of less than 2 inches in depth from the window frame may be of 0.062 inch wall thickness.

1. Exposed screws, fasteners or pop rivets are not acceptable on the casing or mullion systems.

B. Exterior mullion covers: Extruded aluminum shape to provide rigidity, no less than nominal 0.062 inch wall thickness. Seal against the window sections with continuous bulbous vinyl weatherstrip interlocked within the mullion cover and sealant as required for a watertight installation.

C. Interior trim:

1. Interior Trim, Closures and Angles: As detailed, of extruded shapes no less than 0.062 inch nominal wall thickness or as required.

2. Snap Trim: Apply in full length without splices or with minimum splices at spans exceeding 16’ and attach with clips spaced no more than 18 inches on center or as required to meet structural loading requirements. Clips shall be no less than 3 inches long. No exposed screws will be allowed on interior trim.

2.6 ALUMINUM WINDOW FINISH OPTIONS

A. Provide manufacturer’s standard acrylic or polyester, baked-on, electrostatically applied enamel coating applied over manufacturer’s standard substrate preparation including cleaning, degreasing, and chromate conversion coating. Finish shall meet or exceed AAMA 2603 (formerly AAMA 603

1. Color: Hartford Green (interior and exterior) Restrooms to have white interior color

B. Provide manufacturer’s standard 2 coat 50% Fluoropolymer or Silicone Polyester, baked on, electrostatically applied enamel coating. Color to be applied over manufacturer’s standard substrate preparation including cleaning, degreasing, and chromate conversion coating. Finish shall meet or exceed AAMA 2604 (formerly AAMA 605).

C. Provide manufacturer’s standard 2 coat Fluoropolymer 70% Kynar baked on, electrostatically applied enamel coating. Color to applied over manufacturer’s standard substrate preparation including cleaning, degreasing, and chromate conversion coating. Finish shall meet or exceed

AAMA 2605.

PART 3 - EXECUTION

3.1 PREPARATION

A. Existing Construction:

1. Do not remove existing windows until new replacements are available and ready for immediate installation. Do not leave any openings uncovered at end of working day, during wind-driven precipitation or during excessively cold weather.

2. Remove existing work carefully; avoid damage to existing work to remain.

B. Perform operations as necessary to prepare openings for proper installation and operation of new retrofit units or new construction units.

C. Verify openings are in accordance with shop drawings and Architects Drawings.

3.2 INSTALLATION

A. Comply with manufacturer's specifications and recommendations for installation of window units, hardware, operators and other components of work. In no case shall attachment to structure or to components of the window system be through or affect the thermal barriers of the window units.

B. Set units plumb, level and true to line, without warp or rack of frames or sash. Anchor securely in place. Separate aluminum and other corrodible surfaces from sources of corrosion or electrolytic action.

C. Wedge fiberglass insulation between frames of new windows and construction to remain, or between frames and new receptor as applicable. Compress fiberglass to no less than 50 percent of original thickness.

D. Set sill members and other members in bed of compound, or with joint fillers or gaskets, to provide weathertight construction. Seal units following installation and as required to provide weathertight system.

3.3 ADJUST AND CLEAN

A. Clean aluminum surfaces promptly after installation of windows, exercising care to avoid damage to protective coatings and finishes. Remove excess glazing and sealant compounds, dirt, and other substances.

B. Clean glass promptly after installation of windows. Remove glazing and sealant compound, dirt and other substances.

C. Existing windows and other materials removed from site become property of the Contractor who shall promptly remove same and legally dispose of at no additional cost to the Government.

D. Comply with all applicable laws, rules and regulations.

3.4 PROTECTION

A. Initiate all protection and other precautions required to ensure that window units will be without damage or deterioration (other than normal weathering) at time of acceptance.

B. Send to COR, written recommendations for maintenance and protection of windows following

Substantial Completion of Window Contract.

END OF SECTION