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RE: need help

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One of the biggest contributors of rotation is the anchor bolts.  We would
always tension the bolts in a bolted plate steel beam to column moment
connection, yet we are hesitant to preload column base anchor rods.  If the
anchor bolts are preloaded, they are removed from concern for rotation.
Moving from the anchor bolts, you need to check the base plate.  If the base
plate can not be made thick enough economically, use chairs or a bolt box
(whatever term is preferable).  Then you move to the foundation.  The soil
springs and foundation type can be modeled to reflect the tendency to

Harold Sprague

> -----Original Message-----
> From:	Daniel Singgih_Rusdy [SMTP:daniel_sr11(--nospam--at)]
> Sent:	Sunday, November 05, 2000 10:18 PM
> To:	seaint(--nospam--at)
> Subject:	need help
> Hello. is there anyone know how to make a base plate become rigid?
> i need the answer for my thesis. and may i ask another question. To design
> a 
> steel low rise building maybe for 3 story buildings by using etabs 6.10 ( 
> using LRFD Method) , using WF profiles. How to know that we have used the 
> most economical and efficient profiles? for seismic, how about the time 
> period ( Tx and Ty ) if i used Profile WF? as long as i know if the
> Inertia 
> ( Ix and Iy ) are same, the time period ( Tx and Ty ) have to same too or 
> have close value between Tx and Ty to do the best design. What if we use
> WF 
> profile, how about the time period ( Tx and Ty )?
> Thanks for ur help.
> I appreciate all answer.
> Thanks.
> May God Bless U.
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