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Re: Steel Terminology[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Steel Terminology
- From: Mlcse(--nospam--at)aol.com
- Date: Tue, 4 May 2004 00:01:44 EDT
Harold, Gail, Scott,
The pin-wheel isolation joint seems simple enough to use, so I guess its time to modify the block-out detail for steel columns. It makes sense, basically converting the wide flange shape to a rectangular shape. I haven't seen any one doing this for commercial office buildings, retail buildings, or other buildings with steel columns. Then again, the slab-on-grade is generally just 4" thick and does't get the same attention as industrial concrete slabs-on-grade where slabs are 6" thicker and often have re-bar instead of gauge wire mesh.
Is there a preference between using the pin-wheel detail or just adding the diagonal rebar at the re-entrant corners. For the pin-wheel detail, since I don't have the ACI detail, I am assuming the crack control joints from the corners of the column only extend out a few feet and not from column to column. Is that correct?.
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