SECTION 05 51 33.16
INCLINED METAL LADDERS
PART 1 GENERAL
1.1 SECTION INCLUDES
A. Aluminum Ships Stairs.
1.2 RELATED SECTIONS
A. Section 05 12 00 - Structural Steel Framing: Roof structure and opening support.
B. Section 05 50 00 - Metal Fabrications: Miscellaneous metal supports.
C. Section 06 10 00 - Rough Carpentry: Roof framing and opening support.
D. Section 07 42 00 - Wall Panels: Roof curb flashing.
1.3 REFERENCES
A. OSHA 1910.25: Stairways.
1.4 SUBMITTALS
A. Submit under provisions of Section 01 30 00.
B. Manufacturer's data sheets on each product to be used, including:
1. Preparation instructions and recommendations.
2. Storage and handling requirements and recommendations.
C. Shop Drawings for Stairs:
1. Plan and section of stair installation.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Store products in manufacturer's unopened packaging until ready for installation.
B. Store stair until installation inside under cover. If stored outside, under a tarp or suitable cover.
1.6 WARRANTY
A. Limited Warranty: Five years against defective material and workmanship, covering parts only, no labor or freight. Defective parts, if deemed so by the manufacturer, will be replaced at no charge, freight excluded, upon inspection at manufacturer's plant which warrants same.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Acceptable Manufacturer: Precision Ladders, LLC, which is located at: P. O. Box 2279; Morristown, TN 37816-2279; Toll Free Tel: 800-225-7814; Tel: 423-586-2265; Fax: 423-586-2091; Web: www.PrecisionLadders.com
B. Substitution requests will be considered in accordance with provisions of Section 01 60 00.
2.2 ALUMINUM SHIPS STAIR
A. Aluminum Ships Stair and Components: Stair, mounting brackets and handrails on both sides.
1. Model: SL-** (** = height in vertical inches) Aluminum Ships Stair as manufactured by Precision Ladders, LLC.
2. Capacity: Unit shall support a 1,000 lb (454 kg) total load without failure.
3. Degree of Incline: 60 to 70 degrees.
4. Performance Standard: Units designed and manufactured to meet or exceed OSHA 1910.25.
B. Components:
1. Stair Stringer: 5 inch by 2 inch by 3/16 inch (127 mm by 51 mm by 5 mm) extruded 6005-T5 aluminum channel.
2. Stair Treads: 5-3/16 inch by 1-1/8 inch by 1/8 inch (131 mm by 29 mm by 3 mm) extruded 6005-T5 aluminum with serrated slip resistance surface standard. 1-1/4 inch by 1-1/4 by 1-1/4 inch angle welded to underside of treads. Treads shall be welded and bolted to stringer with 1/4” stainless steel bolts.
3. Stair Mounting Brackets:
a. Floor Brackets: 2 inch by 3 inch by 1/4 inch (51 mm by 76 mm by 6 mm) aluminum angle.
b. Top Bracket: 4-3/4 inch by 5 inch by 1/4 inch (121 mm by 127 mm by 6 mm) aluminum angle.
4. Handrails: 1-1/4 inches (32 mm) Schedule 40, 6005-T5 aluminum pipe provided with internal aluminum fittings.
5. Platform:
a. Surface: Platforms 9 Sq Ft or less shall be made of standard tread material. Platforms larger than 9 Sq Ft shall have a bar grating surface.
b. Toe Boards: 4 inch by 1/4” 6005 T-5 aluminum.
c. Handrails: 1-1/4 inches (32 mm) Schedule 40, 6005-T5 aluminum pipe provided with internal aluminum fittings.
6. Finishes:
a. Standard: Mill finish on aluminum stair components.
b. Optional Finishes
1. Powder Coated
2. Clear Anodized
C. Options
1. Tread material: bar grating and various types of formed plate.
2. Extend-A-Rail, ladder safety post attached to one side of stair to assist the climber in entering or exiting a hatch.
3. 42 inch handrail extension (walk-thru) for accessing platforms, landings or elevated work spaces.
4. Crossover stairs with platform between two stairs.
2.3 FABRICATION
A. Completely fabricate stair ready for installation before shipment to the site.
PART 3 EXECUTION
3.1 EXAMINATION
A. If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
B. Examine materials upon arrival at site. Notify the carrier and manufacturer of any damage.
3.2 INSTALLATION
A. Install in accordance with approved submittals.
3.3 PROTECTION
A. Protect installed products until completion of project.
B. Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
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