thanks for the information. to be clear, i was talking about building systems. I have done a few for HVAC equipment, but seem to be learning the hard way with permit rejections. Last was for not providing a seismic valve. Just want to keep informed with upcoming changes (if any) to all required...
being new to gas pipeline design, i am looking for seminars or courses in design and code compliance for gas pipeline systems in the southwest. any information would be appreciated. to be frank, i am looking for more than just deciphering IBC, NFPA, IMC, NFGC, ASC, OSHA, ETC.
The piping has been installed and there was some failures at the couplings, when the piping was drained. When they took the couplings apart, the gaskets seemed to be "sucked" into the pipe. This caused leaks when the pipe was refilled. My initial thought was that the ARVs were not open when they...
i am looking at a scenario that involves all the isolation valves closed. and draining from a smaller pipe.. lets say .. 18" main pipe, gravity drain from a 2" pipe. there is some vacuum occurring. The couplings used at the joints are experiencing suction into the pipe. As the pipe is refilled...
Does anyone have any references for calculation of vacuum pressure in gravity pipe drainage. I have a piping system that flows throughout a facility. The piping is not straight and sloped. it is layed out with twist and turns. I am wanting to calculate the vacuum pressure when the air/vacuum...
