Control joints in composite deck?
Control joints in composite deck?
(OP)
I'm working on a 2000sqft steel framed mezzanine with a concrete deck on metal pan. This is the first time I have used this type of floor assembly. Do you typically cut control joints in a composite slab? I have W beams on 8' centers for joists and girders at 16'. Thanks.






RE: Control joints in composite deck?
I alway use welded wire fabric or fibermesh in my concrete fill to control tempature ans shrinkage cracks.
RE: Control joints in composite deck?
BA
RE: Control joints in composite deck?
RE: Control joints in composite deck?
Oddly, I also tend to get small, but noticeable cracks, over the beams where composite deck sheets start and stop.
Anyone else observe this behavior?
The beams the deck sheets are continous over, generally no crack, but the beams were the deck sheets start and stop, I quite often get cracks. I assume its due to rotation of the deck spans. Just an odd thing I've observed.
RE: Control joints in composite deck?
I think that is because the deck is acting as shrinkage reinforcement, and you are making this reinforcement discontinuous at the supports. Not because of rotation of the deck.
Your explanation for cracking over the girders, and reason for reinforcing at that point, is correct.