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Containment Steel[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Containment Steel
- From: Robin Fried and Robert Shaffer <rkdn(--nospam--at)cruzio.com>
- Date: Tue, 28 Sep 1999 17:15:26 -0700
I have a project with 18" diameter caissons. In calculating the containment steel per 1921.4 equation 21-4, I get Ash=0.18 in^2 for a 4"oc spacing. I believe that I meet this with a #3 hoop. The definition of Ash; Ash= total cross-sectional area of transverse reinforcent ( including crossties ) within spacing, s, and perpindicular to dimension hc. A hoop has two legs perpindicular to hc both of diameter 0.1 in^2. Now according to the definition, cross-ties may also be inculded. So if a hoop with two legs is not correct than two seperate cross ties would satisfy this requirement ?? Then if I go one step further and calculate the pitch of spiral ties I get the same answer of #3 at 4". Or is the code asking for a hoop of diameter Ash ? Thanks Robert Shaffer, P.E. Robert Shaffer, P.E.
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