DESIGN NO. GP/WA 120-02
ASSEMBLY RATING: 2 HOURS; NON-BEARING STAIRWALL
| 1. |
Floor and Ceiling Runners (not shown): 'J' shaped runner with unequal legs and 2-1/2" minimum deep fabricated from minimum 25 MSG galvanized steel. Position runners with short leg towards cavity side of the wall. Runners attached to structural members with steel fasteners located not greater than 24" oc Floor and Ceiling runners to be supplied by others. |
| 2. |
Steel Studs: 'C-T', 'C-H', 'I' shaped slotted web studs, 1-1/2" wide x 2-1/2" minimum deep, fabricated from minimum 25 MSG galvanized steel. Cut to length 1/2" less than the opening's height and spaced 24" maximum oc and between 1" thick gypsum shaftliner panels. Steel Studs to be supplied by others. |
| 3. |
Gypsum Shaftliner*: 1" thick ToughRock Fireguard® Shaftliner or 1" Dens-Glass Ultra Shaftliner, Type X panels, supplied in nominal 24" widths. The panels are inserted against the long leg of the 'J' runners and into the 1" deep recess of the studs. Free edges of end panels are retained by bending 'J' runner tabs (12" oc) at a 90° angle. |
| 4. |
Gypsum Wallboard: 1/2" thick, 4'0" wide GP Gypsum Corp. ToughRock Fireguard C or DensArmor Plus Fireguard C, applied vertically to both sides of the studs with joints offset and attached with 1" Type S, self-tapping Bugle head steel screws 12" oc starting 6" from the top and bottom. All joints are covered with paper tape and joint compound. Exposed screw heads are covered with joint compound. |
*Component bearing the Warnock Hersey Certification Mark
® Registered Trademark of GP Gypsum Corp.
Evaluated to the following:
Design listings are based on, and supported by, proprietary test reports. The test reports further define proprietary design details which make these listings applicable only to the specified products manufactured by the listed manufacturer.
Unless otherwise noted, the assemblies in this section have been evaluated for conformance to the following standards:
- ASTM-E119, Standard Methods of Fire Tests of Building Construction and Materials.
- CAN/ULC-S101, Standard Methods of Fire Endurance Tests of Building Construction and Materials.
- NFPA-251, Fire Tests of Building Construction and Materials.
- UBC-7-1-94, Uniform Building Code Standard.
- UL-263, Fire Tests of Building Construction and Materials.
Designs listed are minimum construction requirements to achieve fire rating.
Unless otherwise noted, fire ratings apply to tests conducted on both sides.
NOTE: Design No. 408 is not used in this edition.
