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- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: need help
- From: "Brian K. Smith" <smithegr(--nospam--at)bellsouth.net>
- Date: Mon, 6 Nov 2000 11:17:03 -0600
Harold, In any of your literature search, have you ever found any investigations on the rotational restraint provided by concrete slabs when the baseplates are on footings or piers at say a foot or so below the top of the slab? Brian K. Smith, P.E. > -----Original Message----- > From: Sprague, Harold O. [mailto:SpragueHO(--nospam--at)bv.com] > Sent: Monday, November 06, 2000 8:57 AM > To: seaint(--nospam--at)seaint.org > Subject: RE: need help > > > > 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 > rotate. > > Regards, > Harold Sprague
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