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  • Users: Mech110
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  1. Mech110

    Water Well Pump sizing to feed large storage reservoir

    Hi everyone, Need help on sizing a pump to feed water from bore to storage tank. I have a underground storage tank of 200,000 gal. capacity. My water supply demand is 650 gpm. Reserving 60,000 for Firefighting I am left with 140,000 gal which will be supplied to the fixtures using 6 booster...
  2. Mech110

    Water demand using UPC and other approaches

    Hello everyone, I am calculating water supply demand for a 3B+G+9 commercial+residential building. I calculated from UPC 2015; total fixtures 5815 which translates to 650 GPM. I have been reading a lot of articles and discussions on this forum as well as other sites. But my confusion is still...
  3. Mech110

    Water supply pump and pipe sizing

    Hi, I have a pump sizing task at hand and want some expert opinion. Pumps have to supply domestic water from an underground water tank (ugwt) of 237,266 gal. to 2 overhead water tanks (ohwt) each of capacity 39,688 gal. meaning in total approx. 79,000 gal. According to UPC, total water supply...
  4. Mech110

    location/number of standpipes and selecting pump gpm

    Hello, I am confused in selecting the required water supply demand and standpipe locations for firefighting system in a building. Building is partially sprinklered; 2 car parks and 3 commercial floors, remaining non-sprinklered are 7 residential floors. Occupancy is light and ordinary hazard 1...
  5. Mech110

    HAP report cooling load difference

    I got a HAP file from a designer. The Total Sensible Coil Load is 200 MBH. However, in the table below which shows space-wise sensible cooling loads sums up to be around 49 MBH. I am unable to comprehend why this difference? HAP file is attached...
  6. Mech110

    How to size a bell mouth intake/supply?

    I know about the velocity of air being used, size of the duct, CFM being handled by the duct section. Also the fact that the bell mouth should be tapered at 45 degrees for smooth entry/exit of air. I also know about the equation Q=Av. Using all this information, how to find the maximum size of...
  7. Mech110

    Its bad..but HOW MUCH bad it is?

    I have attached an image of a square throat elbow whose aspect ratio is around 1:8. (Width 32in, height 4in). Contractor has used 2 of these elbows to cross a beam. and there is some length of straight duct section of these dimensions too (around 6-7ft). i want to know HOW MUCH bad it is? As per...

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