Psi to foot water, or enter any two units below: Enter two units to convert From: We can talk this out if you’d like.You can do the reverse unit conversion from Pressure-reducing valves, downfeed systems, and pumps can help throttle or amplify the psi if needed.Įmail me at and I’ll give you my phone number. The game for an upfeed system is: find the highest fixture(s) and make sure you have met the minimum psi criteria for them then find the lowest fixtures and make sure you are under the maximum psi for those. And even if we got the highest fixture to 15psi, remember that the 9 th, 8 th, 7 th, and other floors will have higher psi values in their toilets because they are lower in elevation. It’s important to note that the 15psi would be the minimum required pressure (the maximum would likely be 80psi) so anything above 15psi and below 80psi should work. Like this, but the height of the fixture, not the height of the floor determines the minimum water pressure so maybe 9.5 floors would be a best MINIMUM answer. Yes, Nicolle, you're correct, 10x12 is a better answer than 9x12.ĩx12 gets you the correct MINIMUM water pressure were the toilet in the floor (50 minus 12 equals 38).-Michael Ermann, Amber Book creator How high can you go and still have enough water pressure to operate a fixture that requires that there still be 12psi in the pipe at the fixture on the umpteenth floor? You can go up high enough feet to lose 38 psi so you still have the 12 left for the fixture. For every foot of height in the building you move up, the water pressure drops a bit. Let's say you have 50 psi coming into the building. (50 minus 12 equals 38).Įvery foot you move up in the building, you lose water pressure in the pipe. How often can you go out to a restaurant for lunch and still have enough at the end of the month to pay your $12 rent, which is due on the 31st? You can go out to lunch enough to lose $38 so you still have the $12 left for the rent. For every time you go out to lunch, your bank account balance drops a bit. Lets say you have $50 coming into your bank account this month from your salary. Good luck.Įvery time you go out to lunch you lose money from your bank account. Also be sure to know your stack diagrams (vent stack and stack vent are different - stack vents penetrate the roof) and difference between building drain, lateral, and public sewer. Be sure to read about up-feed and down-feed systems. However, the typos, grammatical errors, and questions that you will never encounter in practice offered by Kaplan are perfect preparation for the ARE exams questions. (Other systems simply use a pump in the basement to provide pressure beyond what the municipality provides, but I have not encountered that in my studies or on PPD/PDD.)įrom my experience and hearing from others, Kaplan (now Brightwood) isn't the best material from which to study. Some systems provide pressure from the public water main such as residential and low-rise commercial other systems use pumps separate from the public main to pump water to a rooftop storage tank where the weight of the water/gravity provides the pressure. Also, a great tid-bit to remember is that 1' = 0.433 psi so keep your units in check. This is obviously an easy task/calculation so count on NCRAB to pull some type of trickery and overly-complicate the question. You have to convert the height of the building to psi which is seems like you already know how to do. But more importantly, 2) it assumes a bottom-feed (up-feed) system instead of a top-feed (down-feed or gravity-feed) system, although there is no mention of that in the question. 1) It's Kaplan - you should already be skeptical.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |