Return to index: [Subject] [Thread] [Date] [Author]

RE: Splicing of precast concrete piles

[Subject Prev][Subject Next][Thread Prev][Thread Next]
I agree with M. David Finley and Padmanabhan Rajendran that pile splices _should_ have a tensile and bending capacity, but that is a moot point if the US Codes do not require it.


Gunnar Hafsteinn Isleifsson

-----Original Message-----
From: Padmanabhan Rajendran [mailto:rakamaka(--nospam--at)]
Sent: Monday, January 21, 2002 14:41
To: seaint(--nospam--at)
Subject: Re: Splicing of precast concrete piles

I can understand the absence of a tensile load on a
pile. However, although the pile may experience only a
compressive load during service, some amount of
bending will occur during handling, pile driving as
well as due to inaccuracies  in pile fabrication.

Any reputed pile driving contractor should be able to
provide you with different splice designs.


--- Gunnar Hafsteinn Isleifsson
<gunnarhi(--nospam--at)> wrote:
> This may sound dumb to many of you, but this is
> definitely not my field of expertise.
> I got a query from one of our clients, who is
> evaluating the cost of a project abroad, which is to
> be designed acc. to US norms and standards. He
> wanted to know if US norms _require_ that the
> splicing of precast concrete piles is able to
> transfer tensile forces (or bending moments), when
> the piles are always in compression. In other words,
> is it sufficient to use a splice made up of a sort
> of a hat, attached to the bottom of the upper pile,
> that overlaps the topmost one foot of the underlying
> pile, without any further attachment.
> I could not find any answer in the UBC97, which is
> to be used for design. I know that Danish norms
> require that splicing be at least as strong as the
> pile itself, regardless of the loads imposed.
> I can imagine that it would require a rather stiff
> soil to laterally support the pile in compression if
> you have a sort of a hinge in the middle, and stiff
> soil is generally not the case where pile
> foundations are needed in the first place.
> I would be grateful if anyone can tell me where I
> can find which requirements, if any, US norms have
> regarding compressive, tensile or bending strength
> of pile splices, when the piles are always in
> compression.
> With regards,
> Gunnar Hafsteinn Isleifsson
> Denmark

******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at:
*   This email was sent to you via Structural Engineers
*   Association of Southern California (SEAOSC) server. To
*   subscribe (no fee) or UnSubscribe, please go to:
*   Questions to seaint-ad(--nospam--at) Remember, any email you
*   send to the list is public domain and may be re-posted
*   without your permission. Make sure you visit our web
*   site at:
******* ****** ****** ****** ******* ****** ****** ********