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Manhours for piping in trenches

2 replies [Last post]
Mon, 2010-08-30 11:42
Rinus Mijnsbergen
User offline. Last seen 6 years 31 weeks ago. Offline
Joined: 12 May 2004
Posts: 3
Groups: Petro-Chem / Oil & Gas
Can anybody help me out for which factor(s) to use (based on pipe size in inch)for handling/laying of pre-insulated city heating pipe systems in underground trenches compared to process piping.
Exclusive of excavation, welding and re-filling of trench i.e. only handling, transport on site, set and alignment of pipes.

Thanks in advance, Rinus
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Replies

Mon, 2010-08-30 22:30
#1
Shazia khan
User offline. Last seen 12 years 10 weeks ago. Offline
Joined: 21 Apr 2008
Posts: 139
Groups: Petro-Chem / Oil & Gas
Hi-Rinus,

Piping inch dia based on Pipe sch./class , in gerenal we can assume 30- 40 inch Diameter weld per day by one welder, in case of pipeline projects for STD class pipe,

Pipe trench , execavation depands on soil capacity , we can assume 80 -100 mtr Q. for normal soil.

Back filling subject to how many equipment you want to use,

HTH

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Mon, 2010-08-30 15:00
#2
Mike Testro
User offline. Last seen 5 weeks 3 days ago. Offline
Joined: 14 Dec 2005
Posts: 4418
Groups: Building Information Modelling, Content Moderators, GPCCAR Editors
Hi Rinus

Welcome to Planning Planet.

What exactly is "Process Piping"

This is a very complex question and you seem to be excluding the main factors that determine productivity.

Just laying the pipes in the trench is a side issue compared with all the other factors of urban engineering.

I would be more concerned with traffic control - section lengths - underground obstructions etc.

Unless of course you are on a greenfield site.

Best regards

Mike Testro
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