"B" Roof Deck vs "C" Floor Deck - For Floor Use
"B" Roof Deck vs "C" Floor Deck - For Floor Use
(OP)
I've specified "B" deck for roof applications. Throughout the years, for FLOOR applications, I've seen B-deck specified on various plans from other engineering firms and have had it requested by contractors, due to in-stock convenience I presume. Therefore, not seeing any "red-flags", I also have specified it for floor use, whether with concrete topping or simple 3/4" deck.
After consideration, I wonder why I do not specify "C" deck which is apparently fabricated for floor apps. Further investigation shows that the two deck in question are virtually identical with the exception that they are reversed in orientation, such that the section profiles, and thus the Sp and Sn are exact opposites. With the Sp and Sn being so negligibly close, (IMO), is there any reason to change what I am specifying?
After consideration, I wonder why I do not specify "C" deck which is apparently fabricated for floor apps. Further investigation shows that the two deck in question are virtually identical with the exception that they are reversed in orientation, such that the section profiles, and thus the Sp and Sn are exact opposites. With the Sp and Sn being so negligibly close, (IMO), is there any reason to change what I am specifying?






RE: "B" Roof Deck vs "C" Floor Deck - For Floor Use
Type "C" deck - I think you are referring to Vulcraft's Conform deck which is a utility deck that can also be used as a form-deck for concrete slabs (non-composite).
I've never seen type B deck used for floors and I've never done so. This is not to say you can't...just that I haven't seen it used that way.
RE: "B" Roof Deck vs "C" Floor Deck - For Floor Use
I would contact Vulcraft and ask them. There maybe something that makes Type B deck inapporiate for floors. The engineers at Vulcraft would know and usually are very happy to explain the sublties of deck and joist engineering.
RE: "B" Roof Deck vs "C" Floor Deck - For Floor Use
Just make sure that you use floor deck if you are counting on composite action. The floor deck has mechanical deformations to produce the required bond with the concrete slab while the roof deck may not.
RE: "B" Roof Deck vs "C" Floor Deck - For Floor Use
RE: "B" Roof Deck vs "C" Floor Deck - For Floor Use