Project Name/Date Section 08520 Sliding Windows
SECTION 08520
1208 SERIES THERMAL SLIDING WINDOWS
PART 1 GENERAL
1.01 GENERAL
A. Supply and install 1208 Series Thermal Sliding Windows, fixed windows, FULWAL curtainwall, and other components in accordance with this Section and as indicated on Architectural Drawings.
B. Division One shall be deemed to be a part of this Section.
C. The Conditions of Contract shall be deemed to be a part of this Section. In the event of conflict, Conditions of Contract prevail.
1.02 RELATED WORK
A. Section 07900 Sealants, caulking and seals
B. Section 08400 Entrances and storefronts
C. Section 08800 Glass and glazing
D. Section 08900 Curtainwall
E. Section 10200 Louvers
1.03 REFERENCED STANDARDS
A. AAMA Installation of Aluminum Curtain Walls
B. AAMA 502 Voluntary Specification for Field Testing of Windows and Sliding Glass Doors
C. AAMA 611 Voluntary Specification for Anodized Architectural Aluminum
D. AAMA 910 Voluntary Life Cycle Specifications and Test Methods for Architectural Grade Windows and Sliding Doors
E. AAMA 1503 Voluntary Test Method for Thermal Transmittance and Condensation Resistance of Windows, Doors and Glazed Wall Sections
F. AAMA 2603 Performance Requirements and Test Procedures for Pigmented Organic Coatings on Extruded Aluminum and Panels
G. AAMA 2604 Performance Requirements and Test Procedures for High Performance Organic Coatings on Architectural Extrusions and Panels
H. AAMA 2605 Performance Requirements and Test Procedures for Superior Performance Organic Coatings on Aluminum Extrusions and Panels
I. ANSI/AAMA/NWWDA 101/I.S.2-97 Voluntary Specifications for Aluminum, Vinyl (PVC) and Wood Windows and Glass Doors.
J. ASCE 7 Minimum Design Loads For Buildings And Other Structures
K. ASTM E 283 Test Method for Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors
L. ASTM E 330 Test Method for Structural Performance of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference
M. ASTM E 331 Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference
N. ASTM E 547 Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Cyclic Static Air Pressure Difference
O. Insulating Glass Manufacturers Alliance TM-3000(97) Glazing Guidelines for Sealed Insulating Glass Units
1.04 STRUCTURAL PROPERTIES
A. DESIGN WIND PRESSURE: Design wind pressure for this project is (__) psf inward acting pressure, and (___) psf outward acting pressure, in accordance with ASCE 7 Minimum Design Loads For Buildings And Other Structures.
B. UNIFORM LOAD DEFLECTION: The maximum allowable deflection of any framing member in a direction normal to the plane of the wall when subjected to the specified design wind pressure is (L/__) of its unsupported span, but not more than (__) inch. Where plastered, dry-walled, or other materials or components that will be impaired by the normally allowable deflection are attached, deflection shall not exceed (__) inch at those locations.
C. UNIFORM LOAD STRUCTURAL: When subjected to uniform loads equal to 1.5 times design wind pressure, the window system shall display no glass breakage or displacement related to the imposed load; no damage to fasteners or anchors; and no permanent deformation of any principal member impairing the function of the system.
D. DEAD LOAD: Deflection of any principal member in a direction parallel to the plane of the wall, when carrying its full dead load, shall not reduce glass bite below 75% of the design dimension; and the member shall have a 1/8” minimum clearance between itself and the top of the adjacent materials below. Clearance between a member and operable window or door shall be at least 1/16”.
E. LIVE LOAD: The window system and its anchorage shall accommodate a deflection at mid-point between columns of (___) inch caused by uniform and concentrated live loads on floors or horizontal load-bearing elements to which the system is anchored.
1.05 QUALITY ASSURANCE
A. MANUFACTURER: System shall be completely fabricated by the approved Manufacturer. All glazing shall be factory installed.
B. WINDOW CONTRACTOR: Window Contractor shall possess and shall demonstrate ongoing expertise with work of similar or greater scope over a period of at least 5 years. Supply supporting references upon request.
C. OPTIONAL CLAUSE: Field Testing (OR Mock-Up Laboratory Testing OR Visual Mock-Ups): Window Contractor shall have tested (specify quantity) window in accordance with AAMA 502 Voluntary Specification for Field Testing of Windows and Sliding Glass Doors, using Test Method A, and as follows: (______). Window Contractor shall be responsible for cost of supply and installation of the specimen(s). The Owner shall be responsible for all other costs. The specimen(s) shall not be part of the completed project, except at the Owner’s sole discretion. The Manufacturer and the Window Contractor reserve the right to receive reasonable notification regarding, and to attend, all tests.
1.06 SUBMITTALS
A. STANDARD LABORATORY TESTING: Submit documentation certifying compliance with AW-55 Performance Grade, in accordance with ANSI-AAMA-NWWDA 101/I.S.2-97 Standard, and based on full-height Gateway Size 96” x 80” window. Window shall satisfy all requirements of the Standard, including those listed below. Where specified performance exceeds the minimum requirements of the Standard, the requirements specified herein prevail, and as follows:
1. AIR LEAKAGE: Air leakage shall not exceed 0.30 cfm/ft2 with static air pressure differential of 6.24 psf when tested in accordance with ASTM E 283. Air leakage shall not exceed 0.10 cfm/ft2 with static air pressure differential of 1.57 psf (Heavy Commercial rating).
2. WATER PENETRATION (STATIC): No uncontrolled water penetration shall occur with static air pressure differential of 15 psf when tested in accordance with ASTM E 331.
3. WATER PENETRATION (CYCLIC): No uncontrolled water penetration shall occur through four cycles with static air pressure differential of 15 psf when tested in accordance with ASTM E 547.
4. UNIFORM LOAD DEFLECTION: No principal member shall deflect more than 1/175 of its unsupported span when subjected to 55 psf positive and negative pressure when tested in accordance with ASTM E 330.
5. UNIFORM LOAD STRUCTURAL: No principal member shall display permanent deformation exceeding 0.2% of its span after being subjected to 82.5 lbs positive and negative pressure in accordance with ASTM E 330.
6. LIFE CYCLE: Window shall successfully pass all life-cycle requirements, including 2500 cycles of operation, secondary air and water testing, and minimal permanent deformation, when tested in accordance with AAMA 910.
7. THERMAL PERFORMANCE: Window shall have a Condensation Resistance Factor of not less than 52, and Thermal Transmittance (U-value) not greater than 0.55 BTU, when tested in accordance with AAMA 1503.
B. SHOP DRAWINGS: Submit Shop Drawings in accordance with General Conditions. Shop Drawings shall bear the stamp of a qualified locally-licensed Professional Engineer, and shall indicate configurations of windows, curtainwall, system dimensions, profiles, finishes, glass types, anchors, drainage, air and vapor barrier if/as specified and indicated, masonry opening requirements and acceptable tolerances, and details of related adjacent construction. Supply (normally one) set of vellums, and (normally six) sets of prints.
C. ENGINEERED CALCULATIONS: Submit calculations to demonstrate that the window or curtainwall system complies with all requirements of this Specification. Calculations shall bear the stamp of a qualified locally-licensed Professional Engineer.
D. SAMPLES: Submit standard samples of windows, curtainwall, glass, and finishes as requested.
1.07 DELIVERY, STORAGE AND HANDLING
A. All materials supplied by this Section must be handled and stored in such a manner as to eliminate damages and generally maintain original condition of materials. Protection of installed work is not the responsibility of this Section.
1.08 WARRANTY
A. Window Contractor shall warrant for five years from the date of Substantial Completion that the work is not defective in workmanship or materials, and conforms to the final approved Shop Drawings, except for reasonable variances not impairing the usefulness thereof. The warranty shall be in lieu of all other warranties expressed or implied. The warranty excludes unusual use and abuse, and acts or omissions of other parties.
PART 2 PRODUCTS
2.01 MANUFACTURER
A. Drawings and Specifications are based on 1208 Series Thermal Sliding Windows. Other manufacturers will be considered provided that they are in complete compliance with this Specification; that they meet all specified requirements; that they can demonstrate ongoing experience with work of similar or greater scope; and that they receive the written consent of the Architect 10 working days prior to tender closing.
2.02 SYSTEM DESCRIPTION
A. Window shall be 1208 Series Thermal Sliding Window.
B. Perimeter frame depth shall be 4”.
C. Principal frame, mullion and sash members shall be of thermal-break design, achieving thermal separation between interior and exterior surfaces.
D. Perimeter frame shall include ½” caulking legs, to back up perimeter sealant and accept accessories. Exterior perimeter cavity shall be filled with polystyrene insulation, to augment caulking leg and to insulate void. Insulation shall not be required when installing into receptors.
E. Except as otherwise required, banked and stacked windows shall be self-mulling, and joined by integral male-female couplers which shall be back-sealed for weather-tightness.
F. Sill shall include 2” high cavity to evacuate water at 15 psf as specified. Internal PVC supports shall prevent deflection of sill cover as required.
G. Sashes shall accept insulating glass units of 1” overall thickness, unless otherwise specified in Section 08800. Sashes shall be marine-glazed with wrap-around EPDM gaskets.
H. Sashes shall be double-operating and shall automatically lock in closed position via spring-loaded latches. Window and sashes shall include durable pile weather-stripping.
I. Wheels shall be cold-rolled steel, with stainless steel bearings, of correct quantity for sash weight. Wheel housings shall be glass-filled nylon. Sash tracks shall have a stainless steel cap to minimize wear and ensure smooth operation.
J. All assembly screws shall be #400 stainless steel.
K. OPTIONAL CLAUSE: Insect Screens: Provide insect screens to cover half of window normally operating. Screen bar shall be tubular extruded aluminum, finished to match adjacent profiles. Mesh shall be 18 x 14 fiberglass.
L. If the specified system is inadequate to satisfy all requirements of this Specification, Window Contractor shall include and allow for reinforcement of system, substitution of larger sections, or other appropriate modifications, and advise Architect of same, prior to closing of tender, or preparation of Shop Drawings.
2.03 FIXED WINDOWS
A. Adjacent fixed windows shall be 1200 Series Bull-Nose, and as indicated on Architectural Drawings. Fixed windows shall meet or exceed AW-65 Performance Grade, in accordance with ANSI/AAMA/NWWDA 101/I.S.2-97.
B. Finish, glazing, frame depth and frame style of fixed windows shall match the sliding windows, unless otherwise indicated.
2.04 FABRICATION
A. WORKMANSHIP: All sections shall be accurately and neatly cut, machined, and assembled to form hairline joints. Seal all joints, plugs, and components to maintain performance characteristics of system as specified. Drainage holes and slots shall be neatly machined to Manufacturer’s specifications.
2.05 MATERIALS
A. ALUMINUM EXTRUSIONS: All members shall be extruded from 6063-T5 or 6063-T6 alloy, and shall be free of die lines and other obvious defects impairing their function or appearance.
B. GASKETS & SPLINES: Interior and exterior glazing splines and air-seal gaskets shall be extruded EPDM.
C. SETTING BLOCKS: Use compatible blocks of 85 +/- 5 “Shore A” durometer of 4” minimum length, of depth to fully support glazing, and to conform with IGMA recommendations.
D. ANCHORS: Design anchors to secure system to adjacent construction, and to meet all requirements of this Specification.
E. SILLS, RECEPTORS, PANNINGS, TRIMS, T-MULLS, CORNERS, BREAK-SHAPES: Supply and install as indicated on Architectural Drawings and per approved Shop Drawings. Finish shall be as on adjacent window profiles. Where applicable, components shall be thermally improved.
F. INFILL PANELS: Supply and install as indicated on Architectural Drawings.
G. AIR-VAPOR BARRIERS: Supply and install if/as indicated on Architectural Drawings and per approved Shop Drawings to correctly interface with adjacent air-vapor barriers, and to inhibit peripheral migration of moisture and air between interior and exterior of building envelope. Where practical, all Trades shall leave air-vapor barriers (membranes, flashings, etc) “long” to facilitate marrying with adjacent elements.
2.06 ADDITIONAL REQUIREMENTS
A. OPTIONAL CLAUSE: Travel Limiters: Travel of operable sashes shall be permanently limited to (___) inches.
B. OPTIONAL CLAUSE: Emergency Egress Requirements: (______)
C. OPTIONAL CLAUSE: Window Guards: (______)
D. OPTIONAL CLAUSE: Window Washer Anchors: (______)
2.07 FINISHES
A. INTERIOR AND EXTERIOR FINISH: all exposed aluminum extrusions supplied by this Section shall be finished (specify color; if anodized, also specify film thickness) in accordance with AAMA (___) Standard.
2.08 GLASS AND GLAZING
A. Supply and install in accordance with Section 08800.
PART 3 EXECUTION
3.01 EXAMINATION AND ACCEPTANCE OF CONDITIONS
A. Prior to commencement of installation, Window Contractor shall perform a thorough field-check to ensure that construction conditions are correct, that dimensions are correct, and that clearances between work of this Section and other Trades have been correctly maintained. Acceptable construction tolerances are specified in AAMA “ Installation of Aluminum Curtain Walls”.
B. If conditions or dimensions are found to be unacceptable, Window Contractor shall suspend work, and shall immediately send written notification and description of the unacceptable conditions/dimensions to General Contractor.
C. Window Contractor shall await written remedial instructions before resumption of work.
D. Window Contractor shall not be responsible for any costs or damages relating to delays or remedial work resulting from any incorrect or unacceptable conditions, dimensions, etc.