I am currently studying the coating spec. for wastewater treatment plant. Rule 1113 set out by the AQMD in California, reduces the VOC content in coatings. VOC content limit is getting lower and lower. I am not a chemical engineer, so I might be asking some dumb questions here. I just...
I am currently designing a x-braced frame. He's using W-columns and double angle x-braces. Column top to other column bottom distance is about 30-feet (corner to corner) He is providing bolted connection at the middle where the braces intersect. Apparently, he is using lu of 14.7 feet for...
I am currently designing a 40-feet high single story warehouse type concrete building (Seismic Zone 4). The roof system is open web joist and metal deck (no concrete). I am designing the wall anchorage to the diaphragm at the roof level for the walls running parallel to the open web joist...
I am investigating what seems to be a crack due to sun cambering at the top levels of a concrete parking structure. During research, I found a guideline by PCI on parking structure desing and it mentioned something about "sun cambering". Can any one explain me where this applies? Does it...
Currently, 30-ft span roof steel truss joist supporting built-up roof system and other heavy roof-mount equipments. The steel truss joists has been in service for last 30-years, and it's time to replace the equipments now. The design life for the new equipments are 30-years, but I concerned...
I want to run four 6" remote radiator line 3' deep in ground. My mechnical engineer is saying that the pipe temp. will go up to 250 DEGREES (F) and will expand 1" every 10'. I am running approximately 80' of this pipe. Does anybody have any recommendations or experience on this type...
