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Re: Treaded Rod in compression

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check out this thread

http://www.eng-tips.com/viewthread.cfm?qid=96311

Machinery's Handbook.for root & pitch diamters (or stress area)

cheers
Bob



On 5/15/05, Nels Roselund <njineer(--nospam--at)att.net> wrote:
>  
>  
> 
> 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
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