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RE: Treaded Rod in compression

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Thor,

 

When I’ve used all-thread rods in compression, for the area in compression, A, I’ve used the Tensile Stress Area in the Screw Threads table on page 4-147 of the ASD 9th Edition of the AISC Steel Construction Manual.  Area =A,  r = [A/4xpi]^0.5.  If your jack rod has acme threads, I don’t know a tabulated source for the net area – perhaps the ASTM for that kind of thread.

 

Nels Roselund, SE

South San Gabriel, CA

njineer(--nospam--at)att.net


From: Avicpeng [mailto:vicpeng(--nospam--at)telus.net]
Sent: Thursday, May 12, 2005 2:50 PM
To: SEAINT
Subject: Treaded Rod in compression

 

I am reviewing the use of a custom-built screw jack assembly.  Can anyone suggest a reference for the design of threaded rods in compression?

 

TIA


Thor Tandy P.Eng
Victoria, BC
Canada
vicpeng(--nospam--at)telus.net