FIRE RATED - FIXED, PROJECT-IN, PROJECT-OUT, SIDE HUNG-OUT AND SIDE HUNG-IN
PART 1 - GENERAL
Work Included
Furnish and install hot-rolled steel fire rated windows as shown in the contract drawings. Work shall include but not be limited to steel windows (fixed, project-in, project-out, side hung out or side hung in), closures, trim, anchors and factory applied finishes (if required).
Related Work
| A. |
Glass, glazing, and glazing materials: Section 088000 |
| B. |
Perimeter caulking and sealing: Section 07900 |
| C. |
Miscellaneous structural items: Section 05500 |
Quality Assurance, Performance Requirements
Weather-stripped windows shall meet or exceed the following standards:
Air Infiltration Test
ASTM E283 - Maximum air infiltration 0.37 CFM/FT. of crack length with a pressure differential across the windows of 6.24 PSF (50 MPH).
Water Penetration Test
ASTM E331 - No water penetration for 15 minutes when the window is subjected to a rate of flow of 5 Gal./Hr./Sq.Ft. with a pressure differential of 2.86 PSF (33 MPH)
Labeled Fire Rating
| A. |
NFPA 257 - Standard on Fire Test for Window and Glass Block Assemblies - 45 minute rating. |
| B. |
NFPA 80 - Standard for Fire Doors and Fire Windows |
| 1. |
Maximum size opening 84 square feet with neither dimension exceeding 12 feet unless otherwise tested. When multiple units are installed, the distance between unprotected vertical steel mullions shall not exceed 6 feet unless otherwise tested. |
| 2. |
Maximum exposed glass area for 1/4" labeled wire glass is 1,296 square inches with no dimension exceeding 54 inches unless otherwise tested. |
| 3. |
Each ventilator must be equipped with a self-closing device, which will permit the ventilator to close in case of fire. |
| C. |
Each window must bear a 3/4 hour fire rating label. |
Submittals
Submit shop drawings showing window and installation details, including anchorage, fastening, and recommended sealing methods. Show dimensioned elevations with opening and window sizes. Upon requests, provide test reports for all pertinent standards.
PART 2 - PRODUCTS
Approved Manufacturers
Windows shall be provided by a manufacturer and/or distributor of steel windows whose products meet the Steel Window Institute's performance specifications, as set forth herein or in effect from time to time.
Materials
| A. |
The frame and ventilator sections shall be hot-rolled steel. |
| B. |
Windows shall be defined by minimum combined weight of the outside frame and ventilator members in lbs per lineal ft. |
Delete listings below, not required:
1. Light Intermediate 2.0
2. Standard Intermediate: 3.0
3. Heavy Intermediate: 3.5
4. Heavy Custom: 4.2
| C. |
The frame or ventilator sections shall have a minimum front to back depth dimension as follows: |
Delete listings below, not required:
1. Light Intermediate 1"
2. tandard Intermediate: 1-1/4"
3. Heavy Intermediate: 1-5/16"
4. Heavy Custom: 1-1/2"
| D. |
Muntin bars shall be hot-rolled steel. |
| E. |
Glazing beads shall be extruded aluminum or steel. |
| F. |
Weather-stripping shall be extruded vinyl. |
| G. |
Hardware for self-closing ventilators. |
Delete listings below, not required:
| 1. |
Projected ventilators shall be hung on heavy-duty steel side arms equipped with brass friction shoes and fusible link releases. |
| 2. |
Casement ventilators shall be hung on two listed spring hinges and fitted with a stainless steel friction adjuster with a fusible link release. |
| 3. |
Ventilators shall be fitted with steel expansion lugs. |
| 3. |
Provide bronze spring catches attached with corrosion-resistant steel screws for all ventilators. |
H. Insect Screens
| 1. |
Insect screen frames shall be formed electro-galvanized steel having a minimum thickness of 0.032" , or of formed or extruded aluminum having a minimum thickness of 0.040". |
| 2. |
Screens shall be rewireable with 18 x 16 mesh cloth of aluminum or fiberglass. The nominal diameter of the cloth shall not be less than 0.011" for aluminum. |
Fabrication
| A. |
Fabricate windows in accordance with the approved shop drawings. |
| B. |
Frame and ventilator sections shall be solid one-piece sections and corners shall be welded and dressed. |
| C. |
Flanges forming the weathering contacts shall be rolled integral with sections to provide close contact with both inside and outside points of contact. |
| D. |
Muntin bars shall be interlocked and continuous from head to sill and jamb to jamb except that bars in one directions may be discontinued if they are securely welded at the intersection. |
| E. |
All windows shall be designed for inside (or outside) glazing |
| F. |
Operable Hardware |
Delete listings below, not required:
| 1. |
Projected ventilators shall be balanced on heavy steel side arms securely pivoted to the vent and frame at each jamb. Friction shall be maintained by means of two brass shoes sliding in the channel of the frame section controlled by compression springs enclosed in tubular housings. This housing is fitted with fusible link release which will release the friction and permit the ventilator to close in the event of fire. |
| 2. |
Casement ventilators shall be hung on two U.L. listed spring hinges securely fastened to the vent and frame. Friction shall be maintained by means of a friction adjuster or other hold open device located at the head of the ventilator. This friction adjuster shall be equipped with a fusible link release, which will release the friction and permit the ventilator to close in the event of fire. The opening of each vent shall be limited to 70 degrees maximum. |
| 3. |
Provide one bronze spring catch at the centerline of ventilator fastener bar. |
| 4. |
Provide two sets of fire lock lugs on ventilator fastener bar and one set on opposite bar. |
G. Insect Screens
| 1. |
Screens with hinged or sliding wickets shall be provided as required. |
| 2. |
The wire cloth shall be held taut with removable spline. |
| 3. |
Screens shall be removable from the window, held in place by clips. |
| H. |
After assembly, windows shall be pretreated, epoxy or zinc coated, followed by manufacturer's standard finish. |
PART 3 - EXECUTION
Inspection
| A. |
Window openings shall conform with details and dimensions shown on the approved shop drawings. |
| B. |
Conditions which may adversely affect the window installation must be corrected by the General Contractor prior to installation. |
Installation
| A. |
Windows specified under this section shall be installed by experienced personnel. |
| B. |
Install windows in strict accordance with the approved shop drawings. |
| C. |
Set windows plumb, level and true to line, without warp or rack of frames or ventilators. |
| D. |
Anchor units securely to surrounding construction with approved fasteners. |
| E. |
The exterior joints between the windows, trim and mullions shall be properly sealed watertight with an approved sealant and neatly pointed. |
| F. |
Attach ventilator hardware, as required, and adjust ventilators to operate smoothly free from twist and to be weathertight when closed and latched. |
| F. |
Any abraded surface of the window finish shall be cleaned and touched up with air dry paint, as approved and furnished by the window manufacturer, in a color to match factory applied finish. |
Cleaning
| A. |
The General Contractor shall be responsible for protecting the windows and related materials during storage on the job and during and after installation. |
| B. |
Window installer shall leave the window surfaces clean after installation. |
| C. |
Any protection necessary due to the cleaning of materials adjacent to the windows shall be the responsibility of the General Contractor. |
© The Steel Window Institute (2006) Contents are the property of the Steel Window Institute, its members or others who have licensed the information. All rights reserved.
|
|
|
