Specifications and UL Details

• Specifications for light gauge steel trusses
  • Specification section “05410”
• Underwriters lab fire rated roof and floor truss assemblies (restrained and unrestrained 1, 1 1/2, and 2 hour UL assemblies)
  • Roof trusses
    • Design UL “P521”
    • Design UL “P523”
    • Design UL “P540”
  • Floor trusses
    • Design UL “G540”
    • Design UL “L549”
    • Design UL “L565”
• Basic wind speed chart for USA
• Snow drift load chart for USA
• Ratings and specifications
  • Cold-formed steel roof and floor trusses “05 44 00”
  • Metal framing ultra-span floor truss sound ratings
  • ICC-ES evaluation report ESR-1723