Dear Sare, Ralph H.,
In case you happen to design a grass root level pipe sleeper system, the feasibility of driving one pile ( at least ) per sleeper may solve the problem of "SINKING" sleepers.
Regards.
--- "SARE, RALPH H." <SARERH@YANPET.SABIC.com> wrote:
> sliding type support are commercially available and
> part of the support
> configuration per MSS. the snubbers, saddle, steel
> support structure and the
> spring cans cost more (much more). you only provide
> this type of support
> where its needed (therefore its cost is justified)
> and not in every sleepers
> along the pipeline. if the line can accomodate the
> movement and there is no
> need to control the frictional load then o bviuolsy
> one does not need to
> install it.
>
> the problem actually is the sleeper itself. we're
> now spending million of
> riyals to rehab the concrete sleepers. its showing
> signs of cracking,
> sinking and spalling. lost the sleeper, then
> pipeline is airborne.
>
> -----Original Message-----
> From: SubrataP_Saha@ril.com
> [mailto:SubrataP_Saha@ril.com]
> Obviously due cost implications
> and inconvenience of maintenance teflon / rollers
> are prohibitive. Just
> imagine kilometers of pipe in offsites to be mounted
> on rollers or PTFE .
> We have never witnessed any problems in the sleepers
> so far.
>
>
>
>
>
>
>
>
This archive was generated by hypermail 2.1.8 : Mon Oct 27 2008 - 20:23:56 EDT