Type 4.5DR Roof Deck
4.5DR Roof Deck (Deep Rib)
Specifications and Span Chart below
4.5DR ROOF DECK (DEEP RIB)
STEEL ROOF DECKING DIMENSIONS & INFO
PRODUCT INFO
Industry Designations
4.5DR
Deep Rib
Finishes
Galvanized
Gauges
20
18
16
4.5″ roof deck is most readily available with material thicknesses defined by the even gauges 16, 18, and 20. These correspond to design thicknesses of 0.0598”, 0.0474”, and 0.0358”, respectively. While metal 4.5″ decks can be produced in any material thickness between 16 and 20, defining an “odd” or “special” gauge will make the deck much more difficult to source.
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