Division 5 Metals

Structural Steel

  1. All structural steel should be primed unless it is going to be covered with fireproofing.
  2. Exterior structural steel exposed to the elements should be hot dip galvanized.

Cold Formed Metal Framing

  1. Design framing systems to withstand design loads without deflections greater than the following:
    • Exterior Load Bearing Wall framing:  Horiz. Deflection of 1/600 of wall height
    • Exterior Non Load Bearing Wall framing:  Horiz. Deflection of 1/600 of wall height
  2. Roof Trusses:  Vertical Deflection of 1/240 of the span

Gypsum Sheathing

(part of the cold formed metal framing system)

  1. Provide a glass-mat gypsum sheathing board equal to “Dens-Glass Gold” by Georgia- Pacific Corp.
  2. Provide compatible Silicone Emulsion Sealant for the Glass-mat sheathing and Glass-Fiber Sheathing Tape.
  3. Fasteners should be cadmium or stainless steel screws.