Roof Deck 3″ Type NS

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Roof deck is essentially the structural component of the roof to transfer the load to the supports – typically steel joists or beams.

  • This lists the main functions of roof deck:
  • Encloses Building from Wind
  • Provides Fire Resistance as Part of UL Assembly
  • Structural Base of Roof Membrane
  • Resists Dead, Snow, Roof Live, Seismic and Wind Loads
  • Transfers Wind and Seismic Loads to Vertical Components of Lateral Force Resisting Systems through Diaphragm Action
  • Roof Deck Not Intended to Be Watertight in Any Circumstance!!
3” Type N:
  • "N" deck is generally known as "deep rib" deck
  • Sidelaps may be flat adjustable or button punchable
  • The deeper profile allows it to span longer distances or carry more load.
  • 3” deep
  • Comes in 24” coverage

METAL DECK PROPERTIES(SEE LAYOUT FOR GAGES USED)

GAGE 22 20 18
GAGE THICKNESS (in.) 0.0295 0.0358 0.0474
WEIGHT (PSF) 2.0 2.4 3.2


SECTION PROPERTIES PER FOOT OF WIDTH(SEE LAYOUT FOR GAGES USED)

GAGE 22 20 18
Ip (in.4) 0.58 0.74 1.09
In (in.4) 0.79 0.99 1.34
Sp (in.3) 0.34 0.44 0.64
Sn (in.3) 0.37 0.49 0.69

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