I am really getting some fruitful conversations in this and other threads and I am really thankful to all of you for your generous support.
Yes 650-700 GPM is the peak flow occurring for a small time during a day. I wonder why UPC or IPC do not define it clearly in their code and furthermore...
I used both IPC and UPC as I stated above. IPC gives even a lower flow than UPC. IAPMO's calculator just restricts its use for Residential but has not talked about the scale. Any number of fixtures can be entered. However, I am also not willing to rely on it at the moment. 530 rooms of hotel...
Well the associated post has turned into another discussion :D "the wide variation between results obtained using different approaches of calculating water supply demand; UPC, IPC, Average Daily Consumption, ASHRAE Modified Hunter's Curves, Water Demand Calculator by IAPMO published in UPC 2018...
@PEDARRIN2
Well it's getting more and more confusing now. Hard to reach any final satisfactory demand. So many methods, so many approaches. I wonder why UPC and IPC standards are silent on these issues. According to your suggestion, I have 382 showers which means 764 GPM considering 2GPM each...
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...
@PEDARRIN2
Thanks a lot for your reply. I read both of the above articles. Quite informative. I recalculated using IPC, it gives me a difference of approx. -167 gpm from UPC. I think I can go for 600-650 gpm to be on safer side.
Also, i now understand that both IPC or UPC give peak demand but...
@UFT12 Thanks a lot for your help. Yes it violates, that is why I had contacted NFPA and mentioned the same clause you referred to. Generally speaking, by your experience, 1250 gpm will be fine or not?
1:
"7.3.2.1 Hose connections shall be provided at each main floor landing of required exit...
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...
@LittleInch
Thanks for your detailed reply brother.
Domestic water supply, ok tell me then what does this 700 GPM mean according to Uniform Plumbing Code? I followed this approach:
I calculated number & type of private and public fixtures and then using the chart given in UPC CHART A...
Well according to NFPA support guys, I got this answer:
"I wouldn't apply the requirements of combined systems if the building is partially sprinklered. I would select the fire pump for the highest demand be that either the sprinkler system (per NFPA 13) or the standpipe system (per NFPA 14)...
NFPA 14 required.
"7.10.1.3.2 For a combined system in a building equipped with
partial automatic sprinkler protection, the flow rate required
by 7.10.1 shall be increased by an amount equal to the hydraulically
calculated sprinkler demand or 150 gpm (568 L/min) for
light hazard occupancies, or...
Thanks a lot for both replies. However, I would like to point out that at the moment I am just talking about the connection between ugwt and ohwt; the pumps supplying water to ohwt and the pipe carrying it. So in light of this,
@itsmoked: 1. how can i slow down the things? As i told you that...
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...
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...
