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Conc. Bond to plain steel[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "seaint(--nospam--at)seaint.org" <seaint(--nospam--at)seaint.org>
- Subject: Conc. Bond to plain steel
- From: Larry Hauer <lrhauer(--nospam--at)hotmail.com>
- Date: Wed, 12 Mar 2008 12:09:01 -0700
I am designing some "flag pole" type footings for a prefabricated building which is supported by 4" sq. tubes embedded in the concrete footings. The uplift is about 4,000# and I am concerned if it is actually possible for the tube columns to "lift" out of the footings if the bond is broken between the concrete and surface of the tube columns due to concrete shrinkage. The contractor would rather not weld anything to the TS columns, (base plate, dowels, etc.), since it is a prefabricated structure, (greenhouse), with the pieces already fabricated. Is there some type of bond value I can use between the concrete and steel surface? Am I paranoid thinking the columns can actually lift out of a 6 foot deep flag pole type footing?|
Thanks in advance,
Larry Hauer S.E.
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