specs

PART 1 - GENERAL
SECTION 05510
STEEL STAIRS AND RAILINGS
1.01 SCOPE
A. Design, fabricate and install interior and exterior steel stairs, ramps, intermediate landings, steel landing
trimmers, hanger rods and railings in conjunction with steel stairs and landings. Stairs shall be as shown in the
Drawings.
B. Work, items and requirements specified elsewhere that apply and/or relate to this section include:
1. Structural Concrete - Section 03300
2. Structural Steel - Section 05100
3. Miscellaneous Metal - Section 05500
4. Finish Painting - Section 09900
1.02 STANDARDS
A. Meet requirements and recommendations of applicable portions of the Standards listed.
1. American Institute of Steel Construction AISC
2. American Society for Testing and Materials ASTM
3. American Welding Society AWS
4. National Association of Architectural Metal Manufacturers NAAMM
1.03 PERFORMANCE REQUIREMENTS
A. Strucutral Performance of Stairs: Provide metal stairs and support connections capable of withstanding the
effects of gravity loads and the following loads and stresses within limits and under conditions indicated:
1. Uniform Load: 100 psf
2. Concentrated Live Load: 300 lbf applied on an area of 4 sq. in.
3. Uniform and concentrated loads need not be assumed to act concurrently.
4. Stair Framing: Capable of withstanding stresses resulting from railing loads in addition to loads specified
above.
5. Limit deflection of treads, platforms, and framing members to L/360 or 1/4 inch, whichever is less.
B. Strucutral Performance of Railings: Provide railings capable of withstanding the effects of gravity loads and the
following loads and stresses within limits and under conditions indicated:
1. Handrails and guards:
a. Uniform load of 50 plf applied in any direction.
b. Concentrated load of 200 lbf applied in any direction.
c. Uniform and concentrated loads need not be assumed to act concurrently.
2. Intermediate rails (infill components):
a. Concentrated load of 50 lbf applied horizontally on an area of 1 sq. ft.
b. Component loads and other loads need not be assumed to act concurrently.
1.04 SUBMITTALS
A. Materials list of items to be provided under this section.
B. Submit electronic shop drawings, showing in detail fabrication, materials, fastenings, anchoring, welds, supports,
hangers, sizes of members and thicknesses.
C. Show proposed methods of anchoring and supporting stairway and location and lengths of welds.
D. Indicate on shop drawing sizes of sections intended to be delivered.
E. Submit structural calculations for review by Engineer of Record.
1. Description of design criteria.
2. Engineering analysis depicting stress and deflection (stiffness) requirements for each framing application.
3. Selection of framing components and accessories.
4. Verification of attachments to structure and adjacent framing components.
5. Sealed by a professional engineer registered in the state where the project is located.
6. Engineer shall have a minimum of 5 years experience with projects of similar scope.
F. Recycled Content:
1. Indicate recycled content; indicate percentage of pre-consumer and post-consumer recycled content per unit
of product.
2. Indicate material cost of product less labor included in project.
NAPA CENTURY CENTER XD 12
#165582