I have an HVAC duct penetrating a concrete floor from a H occupancy below to a B occupancy above. A fire and smoke damper has been installed at the floor penetration. I was wondering if a shaft enclosure is also required by the code? If so, what section of the code requires this and what are...
Can anyone provide me with information on lighting requirements for a temporary parking lot being used on a construction site? Right now, there are no lights in the temporary parking area and it is dark when the contractors/subcontractors arrive and leave the job site. Furthermore, the...
I'm trying to design a chemical diffuser to inject phosphoric acid in a 66" water distribution header and I was wondering if anyone could provide me with information (or drawings) on what works best.
The diffuser needs to meet the following conditions:
1) diffuser tube should extend...
The AHJ has required an additional means of limit controls during filling(in addition to alarms and overflow pipe at top of tank)for large chemical tanks used for drinking water treatment. The AHJ basically wants a physical device to prevent the chemical from spilling out of the tank. To meet...
