Means and Methods for Driven H-Piles
Means and Methods for Driven H-Piles
(OP)
HELP!! Im very unfamiliar with the driving of H-Piles, but I must submit a means and methods procedure to the owner for driving H-Piles.
There will be 162 piles @ 30' that will drive 25' through soil and 5' through rock.
The rock we will hit is serpentine rock which contains traces of asbestos (oh no!)
The procedure must consist of driving techniques, rock augering...
Anyone have any info for me it will be greatly appreciated.
There will be 162 piles @ 30' that will drive 25' through soil and 5' through rock.
The rock we will hit is serpentine rock which contains traces of asbestos (oh no!)
The procedure must consist of driving techniques, rock augering...
Anyone have any info for me it will be greatly appreciated.
Joe
Project Engineer





RE: Means and Methods for Driven H-Piles
RE: Means and Methods for Driven H-Piles
We will auger down 30'. Drive down a temporary casing. Pour a concrete socket for the section of beam that will be in rock drive H-Pile in place. Voila!
Piles that go into rock will be "drilled" not "driven"... but I'm sure you already knew that.
Joe
Project Engineer
RE: Means and Methods for Driven H-Piles
Dik
RE: Means and Methods for Driven H-Piles
By drilling first and by penetrating the rock you are opening a very large can of worms. I would try very hard to design a foundation system that would not require the removal of material. Of course that is one of the beatuties of driven H-Piles. By drilling first, this benifit of piles is being lost.
RE: Means and Methods for Driven H-Piles
We are a geotechnical contractor, as you can tell im quite new to this. The engineer is well recognized and designed these plans accordingly.
I need to submit a means and methods procedure and I wanted to see what one for this type of work looked like prior to submitting.
Joe
Project Engineer
RE: Means and Methods for Driven H-Piles
For driven piles, try
Pile Driving Contractors Association : www.piledrivers.org/
For drilled casings and shafts, try
Association of Drilled Shaft Contractors: www.adsc-iafd.com
RE: Means and Methods for Driven H-Piles
RE: Means and Methods for Driven H-Piles
RE: Means and Methods for Driven H-Piles
RE: Means and Methods for Driven H-Piles
Don't forget to use a template to keep alignment.
Drilling in serpentine isn't as scary as you may think. We do it all the time here in California. Some serpentine has small amounts of friable asbestos. If it is less than 1% (I think) it just goes to the landfill for a fee. If it has a greater amount then you have to treat it like any other asbestos and keep it contained (picture the auger spinning the spoils out in a sack which is then sealed for disposal). 5' into serpentine shouldn't generate too much dirt to worry about.
Why the casing? Are you expecting groundwater or running soils. If the hole will stand you can drill, set, and pour the same day without the casing. Something to consider.
RE: Means and Methods for Driven H-Piles
You could do the best engineering job in the world, but if it gets rejected due to asbestos then it might as well be the worst.
RE: Means and Methods for Driven H-Piles
This of course prevents down-drag on the piling and the piling aren't actually driven in place but rather set into place. Usually this is OK if you have rock or refusal close to the surface. Since you're setting the pile there is no way to get the bearing.
INGY - I've never seen vibrated h-pile before, mainly due to the fact that most clients require a way of testing the pile. Hence in our area, most h-pile are driven. Only sheet pile for cofferdams are vibrated.
I guess you could use a load test but apparently that doesn't bode well with contractors and so most just drive them.
Regards,
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RE: Means and Methods for Driven H-Piles