What is a "Structural Roof System"?

    A Light Gauge Steel Roof System consists of:

• Light Gauge Steel Trusses

• Truss Bracing

• Truss Connections:

              Truss to Truss, Truss to Structure

• Roof Deck Assembly

• Shear Transfer Framing

• Eave Edge Structural Supports

• Valley, Hip, and Ridge Structural Supports

These 7 Structural Elements form a "Roof System"!

What is required to meet the code?

   The 7 structural elements of the "Roof System" must meet the

   following building code requirements:

• Light Gauge Steel Trusses

1. Support Vertical loads both up and down

2. Transfer lateral loads

3. Provide proper bearing for the deck i.e. avoid knife-edge conditions

• Truss Bracing

1. Prevent chord buckling

2. Prevent web buckling

• Truss Connections

1. Resist gravity loads

2. Resist wind loads

3. Resist seismic loads

• Roof Deck Assembly

1. Support both uniform and concentrated vertical loads

2. Act as a shear diaphragm resisting either seismic or wind loads

• Shear Transfer Framing

         Collect shear and transfer it to the structure and the diaphragm chord

         below

• Eave Edge Structural Supports

1. Support concentrated and uniform loads at the roof edge

2. Collect shear from the roof deck

• Valley, Hip and Ridge Structural Supports

1. Support concentrated and uniform loads

2. Transfer shear across the roof deck transition planes

         All 7 Items Must Meet Code Requirements!