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Re: Landslide[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaoc(--nospam--at)seaoc.org
- Subject: Re: Landslide
- From: "Arvel L. Williams, P.E." <arvelw(--nospam--at)netplus.net>
- Date: Thu, 12 Mar 1998 21:15:29 -0600
Tom Chiu wrote: > > John Buchanan wrote: > > > > . > Generally the soils engineers recommend a minimum of a twelve inch > > . > diameter pier with four number four bars and #3 ties at varied spacing. > > > > I hope this is only a rotten apple and not common practice in the field > of caisson design. The only place where I specify #3 rebar is for > slab-on-grade. #4 vertical bars in 24-inch caisson are out of proportion > anyway, if one draw it to scale, it will look stupid. Whoever that soil > engineer is, his(her) license should be taken away. > > Tom Chiu, SE > Thomas Engineering > Tom, In general, I don't like to see #3 even in slabs-on-grade. However, isn't the minimum size in ACI 318-95 for spiral/ties in a column reinforcing a #3 bar? I believe the original post indicates that the vertical steel is four #4's. Also someone else indicated that they like abour 0.5% steel in their piers. This seem to little to me. I like to see 1% for piers which are or can be subjected to significant lateral forces. Arvel L. Williams, P.E.
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