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Tension only thrust restraint[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Tension only thrust restraint
- From: "Bill Sherman" <SHERMANWC(--nospam--at)cdm.com>
- Date: 09 Oct 98 11:57:12 -0400
I have a pipe thrust restraint problem which I could use some advice on. I have 21 kips of pipe thrust 20 feet above grade, which I would like to resist by use of a 30-ft long horizontal cable or rod from a vertical pipe support back to a building structure. I am trying to avoid thrust at the vertical pipe support since its support structure below is not adequate to carry the base reactions if the thrust is included. I was thinking of using a cable - but in order to minimize cable sag as well as minimize pipe movement under load, I would need to pretension the cable. But this in turn puts a horizontal load on my vertical pipe support when there is no pipe thrust, which is the same as what I was trying to avoid in the first place. So does anyone know of a way to resist such tension due to thrust without inducing tension due to the catenary effect? Would a steel rod act much different from a steel cable?
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