Mezzanine Materials Specifications
4.1 Structural steel beams shall be hot rolled wide flange and meet the requirements of ASTM Specification A36 “Standard Specification for Structural Steel” (minimum yield strength of 36,000 pounds per square inch: FY = 36 KSI).
4.2 Bar Joists shall meet the requirements of the Steel Joist Institute.
4.3 Columns shall be square tube and shall meet the requirements of ASTM Specification A500B titled “Cold Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes” (minimum yield strength of 46,000 psi: FY = 46 KSI).
4.4 Decks shall be constructed in one of the following designs:
- 4.4.1 Plywood – 3⁄4” tongue and groove or Advantek attached to B-Deck with a minimum of 40 screws per 4’ X 8’ sheet.
- 4.4.2 Bar Grating – Shall be a minimum of welded steel with openings 4” X 1 3/16” and 1” X 1/8” bearing bars, attached to the structure with saddle anchors set over bearing bars with tek screws and painted black.
- 4.4.3 Steel Plate – Shall be a minimum of 1/8” thick, plain or diamond plate meeting ASTM A36 and attached over B-Deck with a minimum of 20 mechanical fasteners per 32 square feet area.
- 4.4.4 Other decking options available as requested by customer.
4.5 Deck Underlayment for plywood or steel plate shall be a minimum of 22 ga. corrugated steel B-Deck with 1-1/2” high corrugations, spaced 6” center to center, attached to the structure with minimum of one screw per linear foot of panel width and one crew per linear foot on overlapping panel edges for each structural member crossed.
4.6 All Structural Bolts shall be J429 Grade 5 Bolts.