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How do you put an end to a boss who explodes in anger whenever he hears of some trouble. The guy has a problem and everyone knows it. My problem is whether to go down to his level and enter a shouting contest or to take it until he calms down and listens. (because he changes attitudes within an...

I am designing a project in which an archival storage room needs specialized air conditioning. The curator is asking that the room be maintained at 68 F +/- 2 F and at 45% RH +/- 2%. We have chilled water in the building (24/7). Supply temp= 45 F. Plotting the room condition on the psych chart...

i am designed a room where we need to keep an NC value of 20. (TV studio). Due to the lighting loads the cfm is astronomically large as compared to the room size. I am supplying hi near the ceiling along two walls and returning low near the floor at the opposite wall. I have to pick a supply...

Has anyone designed an air distribution using the Titus flobar system on the side wall? these flobars come with a typical 5 foot long plenum that clips to the flobar rail. the factory provided plenum is 12" deep with an oval duct tap in the middle. my question is : if i need to use a deeper...

has anyone used a snow melting system such as Watts on stairs that are topped with 5 1/2" of granite? this is a fancy monumental walkway ramp that has some steps. we are putting snow melting on the ramp and the steps. any thoughts? i know they work well with brick, but haven't...

Has anyone ever used a product for steam piping expansion loop called Tri Flex? i want to know if anyone has had problems with it. suitable for Temperatures > 200 F? leakage? thanks

how do you size an energy recovery run around loop? my building exhaust is 6500 cfm and my intake is 7500 cfm location Virginia. Max Summer 94, Min Winter 14 F any thoughts? i need GPM

Does anyone know what a "Clay Plug Mill" is? does it need dust collection ventilation?

Could anyone tell me what the acceptable induction ratio should be for selecting low temp supply air diffusers similar to the OMNI LT's? any things to watch out for during design? thanks!

i am tasked with designing a warehouse ventilation system. here are the option i'm looking at: 1. gas fired make up air in the middle with exhaust fans on both ends of the warehouse. 2. gas fired unit heaters spread evenly throughout the space. exhaust fans on the roof. rely on open roll up...