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RE: Underground gas-pipe protection

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Hi Daryl
Your thoughts were very close to my first suggestions to my client.
The CLSM solution was negated because of his density and the problem to 
fill it around the pipe. So right now I've just calculated the dispersion 
of the load with concrete fibres reinforced plate along the 800m length of 
the pipe, and defined a plate width. I will check with the stress analysis 
what kind of effect could create a pressure of 18 t/m².

David Cohen
Engineering Manager


-----Original Message-----
From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On 
Behalf Of h.d.richardson Sent: Wednesday, October 10, 2012 5:09 PM
To: seaint-seaosc(--nospam--at)
Subject: Re: [SEAINT-SEAOSC] Underground gas-pipe protection


        Sorry I did not get a chance to get back to you yesterday but I
was otherwise occupied.

        I have some thoughts that may or may not be useful for the
solution of your problem.

1.  If the location of the future crane support points is known you could
build "tables" (supported on piles or otherwise) to support the crane

2.  If the future crane support points can not be determined in advance
you might consider backfilling the excavation with "flowable fill" or a
slightly stronger concrete mix.  It could even be reinforced with fibres
or other reinforcing if desired.

3.  As a Cadillac version of #2 you could even sleeve the pipe for the
entire 800 meters.  You may need to provide some sleeved portion at the
ends to provide flexibility for the transition from underground to

Truncated 2221 characters in the previous message to save energy.

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