Piping support bridge design and supply

[curtis2004]

Hi everyone,
I have to build 600 ft 4" 100 psi steam and 1.5" condensate return pipe. What is the most economical way of building bridge with supports? Any references to suppliers?
Thank you,
Curtis

 

[vpl]

What is the most economical way of building bridge with supports?

My two cents: Hire a honest and experienced contractor.


Patricia Lougheed

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[LSThill]

curtis2004 (Mechanical)

Yes: suspension bridge!

lng suspension bridge

http://www.kwhconstructors.com/broc...e - Specialized Erection Equipment - 2005.pdf

http://www.kwhconstructors.com/services.special.heavy.php?gallery=eglngpipelinesuspensionbridge

http://www.canadianconsultingengineer.com/issues/story.aspx?aid=1000211270

been their - did that



L S THILL

 

[BigInch]

600 ft clearspan? What is the vertical clearance needed? The bridge is crossing what? Wind, ice flow, seismic loads?

Depending on how those are answered, you might even want to build a new steam plant closer to your destination. With that line diameter, that's not a whole lot of steam, so that might be the cheapest solution.

Have you looked at horizontal drilling?

But if you remain determined to build a bridge,

http://www.spstexas.com/main/products/suspension-and-cable-pipeline-supports/

2161 ft span

http://www.bridgemeister.com/contributions.php?type=P&pg=1

As you can see, most of these are natural gas pipeline bridges carrying pipe with diameters in the 24-36 inch range at flowrates of products that could be worth billions $$$ per year, so the high cost of such bridges is relatively small in comparison. 4" of steam brings a completely different world of economic constraints to the table.

"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.

"Being GREEN isn't easy." Kermit

http://www.youtube.com/watch?v=hpiIWMWWVco

http://virtualpipeline.spaces.live.com

 

[PetroSynergy]

As biginch has said, it is A LOT easier, and most likely cheaper, to find a horizontal drilling contractor than it is to build a bridge spanning 600 ft. One of the issues is also the layout of what you are trying to span. More info is required before we can give you a true "best option" opinion. What are you trying to span? If water, how deep is it? Is it in an area where water freezes? If yes, is the ground by any chance permafrost? and also address biginche's previous questions such as wind, ice, seismic loads, etc.

William Hammett
Synergetic Engineering Consultants

 

[curtis2004]

Thank you for all of your answers.
This project is located in lumber saw mill. 600 ft is distance from boiler house to production building. We do not need one 600 ft span. I could be done 10 of 60 ft spans or even 60 of 10 ft spans (in this case we will need couple of 50 ft bridges to cross roads.
thank you

 

[BigInch]

The clearspan makes all the difference. I would call that a road crossing or two.

Normally a 600 foot run would be done with support frames spaced at about 20 feet with small trusses used to go over the road crossings.

Is there some overwhelming reason that you can't install this like a conventional pipeline, trenched and buried with underground road crossings, or on sleepers at ground level and using a trussed support over the roads, if buring under the roads is not desireable for one reason or another?

"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.

"Being GREEN isn't easy." Kermit

http://www.youtube.com/watch?v=hpiIWMWWVco

http://virtualpipeline.spaces.live.com

 

[StevenHPerry]

This project is located in lumber saw mill. 600 ft is distance from boiler house to production building. We do not need one 600 ft span. I could be done 10 of 60 ft spans or even 60 of 10 ft spans (in this case we will need couple of 50 ft bridges to cross roads.

This sounds more like a pipe RACK with one or two small "bridges" over roads.

Without any other information, save money by putting it on sleepers for everything but the bridges. Use the bridge(s) as the expansion loop(s).

- Steve Perry

http://www.linkedin.com/in/stevenhperry

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