to cckai
if the pipe is c.s pipe with concrete inside &outside you need 100mm up down
r&left side for sand protection.
if the pipe is sewer or drain pipe its depend if the depth of the backfill is
under 100cm
you need concrete protection with iron arming the width of the trench is
d+200mm each side.else d+100mm each side for sand protection
with regard gabai yoram
manjunatha kh <sagarmanjunath@yahoo.co.in> wrote:
pipe trenches are filled with sand and loose earth and normally compaction is
not done/required.
if there is any vehicular movement across the pipe trench then a different
method is used. i.e. main pipe is protected with a sleeve pipe one size higher
than the main pipe.
also please note while using digger buckets/ shovels may damage the pipe, the
coating/ wrapping / cathodic protection if applied.
this 250 mm is enough if the location is totally new & single and no other
piping is existing.
how the compaction is going to help. it only increases the cost and extra stress
on the pipe.
please clarify.
Steve McKenzie <mechproj@xtra.co.nz> wrote:
you need some clearance at each side to compact the bedding material. In
smaller sizes, width is determined by other factors such as
shovel/digger bucket width joint making and compaction access.
Cheers
Steve
-----Original Message-----
From: manjunatha kh [mailto:sagarmanjunath@yahoo.co.in]
Sent: Tuesday, August 10, 2004 7:16 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] Buried pipe Trench
the good engineering practice for trench width is the diameter of the pipe + clearence of 3" on either side of the pipe ( at one meter depth).
cckla <cckla@pd.jaring.my> wrote:Mr. Manjunatha kh,
Can I konw how you determine this (250mm) ?
Regards,
cckla
250mm
cckla <cckla@pd.jaring.my> wrote:Dear all specialists,
Do you know the minimum width of the trench for a 100mm diameter pipe, which will be considered as embankment backfill ? Is there any standard formula to determine the trench width for embankment backfill for the various pipe size ? Please guide me.
Thank you.
Regards,
cckla
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Received on Tue Aug 10 17:04:00 2004
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