H pile
H pile
(OP)
Does anyone have a detail for steel H pile and concrete cap?
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RE: H pile
RE: H pile
RE: H pile
The left pile is for compression only piles (which are assumed unless noted otherwise on the drawings).
The right pile is a compression or tension pile (which would be specially noted on the plans or plan details). The rebar is to transmit uplift forces from the pile cap to the pile.
RE: H pile
Any thoughts
RE: H pile
I think this is the question everyone comes to when they first do steel pile/concrete pile caps. I know I took a lot of convincing to accept that the bearing on the end of the H-piles works.
Many years ago, a mentor had me read a few articles that summed up research on this. The conclusion of the research was that the concrete in direct bearing with the steel pile is confined by the surrounding concrete to such a degree, that it can take very, very high bearing values. Unfourtunately, I did not make copies of those articles, and no longer have access to them.
CRSI Design handbook recommends that with a 6" pile embedment, cover plates for bearing are not required. See Chapter 13 of CRSI Handbook. (Page 13-15 specifically in the 1996 edition).
RE: H pile
RE: H pile
But wouldn't it be prudent to still have some positive anchorage even on the compression pile, such as a dowell placed or welded across the pile?
RE: H pile
RE: H pile
This is shown in the attached file from an older version of the Caltrans Standard Plans. For some reason, the newer version doesn't seem to include this detail, however the pipe pile detials use a similar detail around the circumference of the pipe.
RE: H pile
RE: H pile
I have used piles painted in "splash zones" offshore and unpainted H-piles straight in the ground. Steel piles for the most part if they are not exposed, act as grounding rods anyway, allow a nominal corrosion allowance. Geotech report should confirm ground resistivity.
Robert Mote
www.motagg.com