What standard should be used to design vents in jacketed pipes at asphalted road crossings?
What standard should be used to design vents in jacketed pipes at asphalted road crossings?
(OP)
What standard should be used to design vents in jacketed pipes at asphalted road crossings?





RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
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RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
If you mean casings, then there is no standard and from experience it's pretty minimal construction technique as well.
"Jacketed" tends to mean under pressure steam systems.
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RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Technology is stealing American jobs. Stop visas for robots.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Technology is stealing American jobs. Stop visas for robots.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Technology is stealing American jobs. Stop visas for robots.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Technology is stealing American jobs. Stop visas for robots.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
You do realize that if, as shown, you weld the 10" pipe to the 6" pipe as shown then have differential temperatures and expansion you will generate some very big forces on the 6" pipe in particular.
You have no seals shown on the 10" to 12" pipe so this will just fill with water
The vents are not designed per se - there is virtually no flow and no pressure so just use some nice thick pipe to resist bending loads, say 2" sch 80?
That drain line you show won't work - there is no driving force to flow water uphill so it's purpose is unclear.
You don't need this 10" pipe to "protect" the outer one. why is it there?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Technology is stealing American jobs. Stop visas for robots.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
The 10 "pipe was placed as a protection of the 6" pipe because we did not have the caps of T.D. Williamson 12 "x6" only 10 "x 6", which seals the 6 "pipe, however a venting is performed for possible gases present in the 6" and 10 "pipe space, that venting does not serve For nothing else, it is a very common practice at intersections in my country due to the conditions of the terrain.
Attached is the catalog of the caps and collars of TD Williamson and the link:Link
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Technology is stealing American jobs. Stop visas for robots.
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
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RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
Many that don't know better think that casings are the only way that these crossings should be installed, however the practice has been going out of favor for at least 35 years. Casings are not required by B31.4 or B31.8, only by railroads and other enemies of pipeines, so you know something isn't right.
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RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
RE: What standard should be used to design vents in jacketed pipes at asphalted road crossings?
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