Recent content by marthab

Mechanical

How do I size the duct for an exhaust fan with 1450 cfm and 1,324 rpm.

For a bakery with 6 ovens with a total demand of 170 kVA can Table 220.56 NEC be used and factored this load by 65%? Thank you

We were asked to give a price for the design of storage sheds that will be used over and over and over again. What is the best way to price this for multiple repeat uses of the plans? Thanks

I was asked to furnish hydraulic grade line calculations for a system of 4 pipes that go from CB to CB. I created a spreadsheet, but I am getting for my last 2 pipes (upstream) the E.G is lower than the invert of the pipe. Is that possible? Also, does anybody know of a spreadsheet that is...

I'm trying to find out how much are engineering firms charging for subdivison design per lot. Includes preliminary plat and construction plans. Surveying fees will be extra. I'm in North Carolina. Thanks

Is there a way to insulate a sanitary sewer pipe for an aerial crossing? The pipe is DIP, 8".

Where can I find information (literature) on the hydraulic design of a bottomless arch culvert? Is there any software available? Thanks for the help

That's what we thought Thanks

We are designing an office building whose main structure is a metal building system. The owner wants a copula 5'x5'x5' with metal roof panels matching the building. The question is: Can the metal building manufacturer design the copula, or should we do it. The weight should be consider in...

Is #3 rebar at 24" oc with 6x6x1.4wx1.4w enoguh? The slab will be on 4" crushed stone. Thanks

We are designing a fire station. Is an 8" (4,000 psi) slab on grade enough for the bay area? What about reinforcement? I will appreciate answers ASAP. Thanks

Thanks Steve

How do you design an apron for a pipe that is not flowing full. THe soil erosion manual figures assume pipe flowing full. Thanks

We are in the design process. We are going to request that the metal building will provide lateral support for the brick veneer.