Water Sizing Example Thru Appendix A UPC

This is a demonstration on how to size a water system utilizing available pressures, distance, elevation, and gallons per minute. This is Appendix A of the UPC (Uniform Plumbing Code). If you have any questions, please ask and I will be happy to assist!

[@jmac213stuff]

Great Review. I did this about 6 years ago for a permit I needed for a repipe. The engineer down at the city
was cool, he helped me with it, and I had to get a line diagram and detail, along with the calculations and needed
WSFU table submitted to the city. It was a 4 unit apartment building, 16 PSI & 28 feet elevation. you made it
look easy. Thank again!

[@BGsPlumbingClass]

It gets easy once it's explained WHY it needs to be done this way, and when you do it a few times.

[@hoadiep2879]

Thank you for spending your valuable time and explanation.

[@BGsPlumbingClass]

I only hope it explained the process well enough.

[@saulsolis7965]

You deserve more credit man 👨 great job 👏

[@BGsPlumbingClass]

Wow. Thanks! Believe me it is my pleasure!!! I swear I do the videos just as an excuse to draw the beginning time lapse. Kidding. I never would've done these videos if it wasn't for Covid and having to take my class online. I'm so thrilled that others outside my class are watching these.

[@InadimentStick]

Thanks for the great videos! Could you post your worksheets so I can print them out and follow along?

[@BGsPlumbingClass]

I would be happy to do so! I gotta figure out how to do that first, but I will!!!

[@taylorswoveland5631]

Thanks

[@BGsPlumbingClass]

No problem

[@sethtetteyannan]

Great Video. Thanks for taking time to share....
Would the calculation procedure be any different if the main service line was from a water storage tank on a roof slab? Would there be a need to factor any elevation since the water is distributed by gravity?

[@BGsPlumbingClass]

In order to properly provide the necessary volumes in gpm per fixture, it would be advisable to size according to available pressures- whether the supply is coming from the street or the roof. I hope this answers the question sufficiently.

[@davidmccleary9639]

How do you determine the minimum street pressure, hydrant flow test? Also how do you determine the minimum working pressure at the furthest fixture?

[@BGsPlumbingClass]

In most cases the minimum available street pressure is provided by the water authority when contacted.

[@davidmccleary9639]

If the 3” pipe is the box below the number 3 where does that leave the box below that with the number 2 in it?

[@BGsPlumbingClass]

The line between the 2" and the 3" is going to be 2 1/2" which is a valid size and is used often in copper.

[@dustine3497]

Great explanation! Upped my confidence in using Appendix A.
Do you have plans do do one for Appendix B?

[@BGsPlumbingClass]

It is said that when you make plans, God laughs. I have every intention of furthering this code series, however as of late I have been packing up the whole family to move to the other side of the country. From west coast to Tennessee. I will do more as soon as I am situated back there. Thank you for the kind words.