Hey man I passed my Washington journeyman's exam this morning. And I really want to thank you for putting these videos out there they really really helped me alot!
I don't know why this valuable video has so low views. I am a GC, and I am so appreciate your contribution, sir. Please look at all those comments, you should prided of how you helped all of those "truly in the trade people" like me and the others. Thank you!
Thank you so much!!! I left the field a few months back to teach full time because I got more reward in the successes of others, instead of the stress and worry as a superintendent. Thank you again.
I downloaded all of your videos on the chapters of the UPC and listened to them while at work. I took my commercial journey level test today and passed. Thank you for making these
That's awesome! I am so blessed to have been able to be of assistance! But it was you that took the test and took the time to learn this amazing trade. Congratulations!
Amazing video, super clear, excellent walkthrough! Especially that gotcha regarding not exceeding the total system DFU no matter what the math tells you- I could see that coming up on an exam! Can't wait to see what you've got on DWV and wet-venting, that stuff makes my head hurt...
I am glad I was of assistance! Just remember that it was you that took the test, not me. And it was you that succeeded. You took the time to study. Congratulations!
That's great! I actually helped a student or two from there! If you have any questions feel free to reach out at gorhambm@outlook.com and I will be happy to assist further!
Thank you for these CZcams videos they are lifesavers! I have a trade test is this Friday and I’m more confident than I’ve ever been thanks to you! Hoping for a waste sizing video sooner than this weekend please!
@@gregjeiran228 Fantastic!!! Was your exam for the journey level card or is that later? I know I need to do another waste sizing video, I was supposed to do it last week.
@@BGsPlumbingClass no it was for a contractors license in California! No worries, I found the first video and that helped me a lot. Wasn’t as complicated as I expected
OUTSTANDING video that really simplifies the domestic water sizing. It would really be helpful if you did a continuation of this video where: 1. You sized the water heater. 2. You sized a hot water recirculation system (including the pump) for this example. That would really help pull some of the other aspects of a Domestic water system together. Finally, are there any fundamental differences between sizing using UPC vs IPC (other than the page numbers of the charts/tables)? This is really an outstanding series of videos. Thanks again for clearing up some aspects of basic system design.
Water heater sizing is actually pretty basic when you get right to it. It is based on the first hour rating- the amount of water heated in the span of an hour, how many restrooms there are, and how many bedrooms. You'd think it would be based on something else [Table 501.1(2)].
these videos are fucking amazing. went to school for plumbing and about to take my journeymans exam here in maine and i love your videos to refresh my memory of everything i need to know!
I believe the Maine code was written based on the UPC and not the IPC. If you have any questions please email me at gorhambm@outlook.com and I will try to coach you through. I love hearing about these videos helping apprentices!
You would have to get information from the heads themselves, like what volume is needed for each head. Then you could use the sizing methods from Appendix A (there's a video on that type of sizing method) in order to properly calculate gallons per minute to fixture unit equivalency.
You jumped from 23.5 to 31.5 without kind of an explanation but I was able to figure it out. You did the 23.5 then added the 5.5 but after the water heater towards the meter you have to add the dishwasher back into the total count in order to get the total to 31.5. I was confused but figured it out. I appreciate these videos hopefully you can do a waste drawing soon. 🙏
Kind of, and I actually have a question about that. The units that weren't accounted for in the branch to the water heater are the CW and LS, because their cold water fed upstream of the water heater. So add those 5.5 to the 23.5 and you get 29 fixture units. The other 2.5 come from the hose bibb that's upstream and has no hot water. So, should that common line leading to the water heater actually be 29 fixture units and not 31.5, because it's beyond the feed to the hose bibb? It may be negligible, but in a different example/situation it might make a difference, so I'm wondering what's correct. Thanks!
@@scottadams364 If you look at the 34 minute mark, you'll see that 19.5 fixture units are required for the water heater. That is to say that if the hot were turned on to every fixture that uses hot water at the same time, enough volume must go through the heater to meet that demand. So, the clothes washer, laundry sink, etc has to be fed through that line as well as the cold supply upstream. This concept- and the hose bib concept- is probably the most confusing out of the whole process. Look at it as a different route to supply water to a fixture. Hope this helps clarify, if not reply again and I will try a different approach.
Thanks for the Video! Can you share some exercise practice sheets like the one you showed here so that we can have some practice on? A pdf version with an answer sheet. Thanks again!
Hey Ben, one of your students here. Just watched this video and going to try to size out my parents’ cabin remodel here in Blount County. But hey, I guess I should see if IPC standards are different when it comes to supply line sizing… 🤷♂️ Speaking of, when you gonna switch over to IPC?? I think I know the answer there…
Daniel, there is a significant difference between the two codes- more than I expected for sure. The UPC is a much more detailed and specific code. I believe I mentioned to you earlier that IPC sizing is similar to Appendix A in the UPC. Also, I may have to switch to IPC, but my heart belongs to the UPC- forever.
Great illustration, thank you! One question for you. How does footnote 3 from Table 610.3 come into play? It is in the CA Plumbing Code which is based on the UPC. I believe this footnote should also be in the UPC. "3 The listed fixture unit values represent their load on the cold-water building supply. The separate cold water and hot water fixture unit value for fixtures having both hot and cold-water connections shall be permitted to be each taken as three-quarter of the listed total value of the fixture."
When I was living in the philippines, I rented an apartment. My psi was 1 during the day, 5psi at night. I tried to explain to the landlord why this was happening. The other tenants thought this was annoying but no big deal. The landlord would continue to spend lots of money on plumbers that didn't understand any of these concepts. I started to feel like a plumbing god...
I don't, sorry. I was also asked if I had one for Hunter's Curve. If I had gone into that, I think my students would've dropped. If you'd like I could look into doing one in the future. I wanted to get into the shift in water demand, which is causing our industry to rethink sizing methods. The fixtures of today are using far less volume than - say - 75 years ago.
This video is good but a little misleading...the code states that we are to use the full fixure values listed in the UPC code book to size the cold water supply to the house as well as to size the meter, however, what the video is not telling you is that when sizing individual hot OR cold interior sections of water piping, you indeed can reduce the listed fixture value by 25% for any fixture that has both hot water and cold water going to it. In other words you can multiply the fixture unit by 75%. This can drastically reduce the sizes of different sections of your water system.....And you will not starve any of your fixtures of water by using this method as its in the code book.
You are absolutely correct about the 75%, and on top of that, you could even size according to bathroom groups. The purpose of the video was to go over the basic sizing parameters based on the journeyman exam for the state of California. The exam does not cover the 75% method, which is note 3 in table 610.3 I appreciate the feedback, and thank you for bringing up this additional option.
Please clarify this for me. Why are you adding the Dish washer hot to the total fixture unit value? You also calculate it when adding the hot? It seems like it is in there twice?
Great question. In this example, the dishwasher is ran as it's own supply. It was done strictly as a sizing example. Much like a dish washer in a commercial situation. In this exercise, I'm also not utilizing the 75% method of supply due to the fact that it was a sample of what the journey level exam uses in the state where I instruct.
I wonder if it would make it easier to explain or understand the value of total FU on the section of pipe immediately upstream from the hot water heater tie-in as being equal to the total FU demand from the WH plus the total FU value from all fixtures downstream of the WH that use cold water only. In your example: WH demand= 19.5 FU+ 7.5 FU(WC 2.5FU x 3) + 3.5(HB1 2.5FU + HB2 1FU)= 30.5). Just a thought to hopefully make it easier to understand.
I really need to do a couple more of these examples. Also, since the codes are readjusting the way we size water systems, it is important that a new example be done. Look for it- eventually (gotta make time to do them).
Excellent teaching! I've been learning California Plumbing Code which base on UPC for a while. 2 questions here please, when I use table 610.4 to locate the supply branch's size, I always need to use the minimum pressure for the pressure range column? If the water pipes are below the meter(This video demonstrate all fixtures above the meter), do I need to still use the minimum water pressure minus the pressure loss of 0.5psi/feet or the pressure loss shall be always calculated by the highest outlet? Thank you very much!
I neglected to mention in the video that if the dishwasher were off the kitchen supply it would be 1.5 fixture units. I have this example set up as though the dishwasher were set up separately. I always do it that way in class. You are correct.
I’d like to know why you added 1.5 on this dish washer because table 610.3 say kitchen sink with or without dish washer is still 1.5 but on the video you counted 3.0
Question: Do WSFU convert to 1-GPM? So 31.5 WSFUs would equal a total volume of 31.5GPM Quantity of Water supplied to the entire system, for all 19 fixtures to use proportionately?
Short answer is no. The fixture unit calculations were originally based on Hunter's curve and a "scientific" method of estimated occupancy. I believe you asked in reference to the curve in another question. So I will explain a bit in that question. But to this one, no the fixture unit value is not based on a gallon per minute basis- great question.
The total developed length is the distance from the meter to the furthest fixture. Imagine how a drop of water will get there. If you wanted to get exact, you will have to take into consideration the type of material and the distance equivalency of each fitting. For example, a 3/4" copper 90 is approximately 2.1 feet- according to Table A 104.4(2)
The 3/4" meter with 1/2" supply is not for 1/2" building supply but for the branch size. And the others are due to the distance to fixture unit relationship. A larger meter size will accommodate the volumes fixtures at greater distances require that the smaller size can't meet.
Sorry for the delayed response. I believe I just answered you in a different inquiry, but in case you get this one first, I will point you to another of my "lectures". The video on Sizing According to Appendix A will benefit you in your case. If you have questions, please feel free to reach out.
Hi man I am new to plumbing and would like to know more. So after you size every pipe of the house, in real life would you just choose the largest pipe from the meter and use that for all pipe size in the system instead of using different sizes from the calcs?
I'd run the recommended size. Without getting too technical, If you oversize then you will have a slower velocity and the possibility of any "solids" settling on the bottom of the pipe. That could result in the tubing developing a leak through corrosion from within.
Hi man here’s another question, does it matter what the piping material is (PEX or Sch. 40)…will it not affect the pipe sizes? Most of my projects are in Cali. What type of piping material should I use for outside (from water meter to house) and inside house?
The type of material used is going to be contingent on the local authority. Some don't allow PEX underground. I prefer a copper supply underground, however for larger diameter supplies I've used Sch 80 PVC as well as C900
I have my nitc test on Tuesday and I'm watching this video and hoping will help me . This one I'm understanding but one drawing has more than 7 WC with flushometers and to look at footnote 7 and I got lost..
I am so sorry for only now getting to you. How did you do on the exam? Let me know at gorhambm@outlook.com and if you would like some extra assistance, we can figure out a time for a Zoom.
The total developed length is the point from the meter (at curb typically) to the furthest point in the system itself. In other words, the furthest distance a drop of water has to travel from leaving the meter to dumping out of the piping- either through a hose bib, a shower, a kitchen faucet, etc.
@@BGsPlumbingClass Thank you sir. In Nigeria, we make use of an overhead tank erected by the side of the apartment. So the TDL in this case Is from the point of discharge of the storage tank to farthest water outlet, right?
Dear sir,hope u r doing well .what will be the maximum distance between two manhole as per standard if the pipe size is 6” or 160 mm with a slope of 1:100
Manholes for sewer lines on a property fall under section 719.6 of the 2018 UPC. It says they are not to exceed 300' apart, but must be approved by the authority having jurisdiction. A building sewer cleanout follows the same requirements as a building drain- 100' max, not to exceed 135 degrees. That is section 719.1
Not at all. Look at a kitchen faucet. If the faucet is being supplied by a 3/8" supply off the angle stop, does that mean a 3/8" water branch can run 100' and still provide the required volume and pressure during use?
Hello, I have been instructed to use the “75% method” by others when calculating fixtures with both hot and cold for branch and fixture sizing. Why would you not use this method?
The way I look at it, if we were to do the 75% method- which is fine- then the sizing would be a bare minimum. With the sizing done here, you will have little to no chance of starving a fixture its' volume.
@@BGsPlumbingClass thanks for the reply. I am trying to size my renovation but showing that I will need a 1” water heater, which are hard to find here. I have 78 psi and a 3/4” meter with a 80’ developed length and 41 fixture units… it’s crazy for only 3 bathroom home! Maybe I’m doing something wrong.
Im confused if anyone can help me. I've been using the 0.75% method. Why is he just adding the FU and finding his pipe size? I have my test 2/17/23 Im located in LA.
This video was based on the uniform plumbing code, and at the time in the state of California where I was, the journey level exam did not test on the 75% method. You are based on the principles dictated by the International Plumbing Code- kind of. If you need assistance please email me at gorhambm@outlook.com and we can collaborate. The goal is to get you through that exam. Looking forward to hearing from you.
Good question Southlake. I had the same concern. When sizing the water main and water meter, use the full fixture value written on the fixture value chart in the code book for all fixtures... however when sizing separate interior hot or cold water line branches, the code says if a fixture has BOTH hot and cold going to it , you can reduce the listed fixture value by 25% or in other words figure the fixture at 75% of the fixture value listed on the chart in the code book. This can drastically change what size your interior water piping needs to be.
Hey man I passed my Washington journeyman's exam this morning. And I really want to thank you for putting these videos out there they really really helped me alot!
That's AWESOME!!! Congratulations!!! You did all the hard stuff, like studying and learning. I just provided the info.
I take my Washington exam next Friday, have any tips for me? Thanks in advance
How'd you do on the exam?
I don't know why this valuable video has so low views. I am a GC, and I am so appreciate your contribution, sir. Please look at all those comments, you should prided of how you helped all of those "truly in the trade people" like me and the others. Thank you!
Thank you so much!!! I left the field a few months back to teach full time because I got more reward in the successes of others, instead of the stress and worry as a superintendent. Thank you again.
I passed my test thanks to you. I'm in Texas.. I need my practical test coming up any videos on rolling off set
I could do one for you. When is your practical?
I downloaded all of your videos on the chapters of the UPC and listened to them while at work. I took my commercial journey level test today and passed. Thank you for making these
That's awesome! I am so blessed to have been able to be of assistance! But it was you that took the test and took the time to learn this amazing trade. Congratulations!
passed my journeyman test today!! thanks for all the help ben! -Ben
That's awesome!!!! You were the one that did all the studying though, you are to be congratulated!!!
Re-taking my Wisconsin plumbing exam next week, and I've already realized why failed it by 2 points. I can't thank you enough for all of these
You gotta tell me how you do
Amazing video, super clear, excellent walkthrough! Especially that gotcha regarding not exceeding the total system DFU no matter what the math tells you- I could see that coming up on an exam! Can't wait to see what you've got on DWV and wet-venting, that stuff makes my head hurt...
Remember though, it's going to depend on what year the exam is based off of for that fixture unit count. Thank you for the kind words.
Thank you for helping me out to understand how to sizing water yesterday I just passed my journeyman plumbing test😀
That's awesome! Congratulations!!!
Studing for my plumbing Inspector test. Absolutley perfect clarification for water sizing.👍
Fantastic! You gotta let me know how you do on that exam! gorhambm@outlook.com
Thank you so much for these videos. I passed my 01 journey level test because of you.
I am glad I was of assistance! Just remember that it was you that took the test, not me. And it was you that succeeded. You took the time to study. Congratulations!
This is going to be a life saver on my journeyman's test. I appreciate it greatly
Where are you taking the exam? What state?
@@BGsPlumbingClass It was for Montana. And I passed it.
Fantastic!!!
Thank you so much for the teachings!!!
You are so welcome!
I am taking my master exam. Thanks for your videos. Wish me luck buddy!
Let me know how you do!!!!!
Just wanted to say, "thank you for your time explaining in all your videos. I passed 1st try taking Oklahoma journeyman"
That's awesome! Thank you for your time and dedication to our craft. All I did was narrate the code, you're the one that did the time. Great job!
@@BGsPlumbingClass i most definitely refer people to your channel when I hear they are trying to get their license
Thank you for that!
Thanks for the video! I am studying to take my washington test and it was really helpful
That's great! I actually helped a student or two from there! If you have any questions feel free to reach out at gorhambm@outlook.com and I will be happy to assist further!
I am taking my cslb test on tuesday and your videos are helping me alot thank you wish me luck
Best of luck! You go this!
Please tell me how you did. If not here email me at gorhambm@outlook.com if possible.
Thank you for these CZcams videos they are lifesavers! I have a trade test is this Friday and I’m more confident than I’ve ever been thanks to you! Hoping for a waste sizing video sooner than this weekend please!
That's great!!! I hope your exam is for the UPC and not the IPC. Good luck, I'm sure you'll do great!!! You gotta let us know.
@@BGsPlumbingClass Thank you so much! Yes it was for the UPC! You’re videos helped a bunch! I passed, thankfully!
@@gregjeiran228 Fantastic!!! Was your exam for the journey level card or is that later? I know I need to do another waste sizing video, I was supposed to do it last week.
@@BGsPlumbingClass no it was for a contractors license in California! No worries, I found the first video and that helped me a lot. Wasn’t as complicated as I expected
Sweet!
Took my master mechanical passed it on my way to my master plumbers
Thank you for the videos
I hope you do great! Let me know how you did!
OUTSTANDING video that really simplifies the domestic water sizing.
It would really be helpful if you did a continuation of this video where:
1. You sized the water heater.
2. You sized a hot water recirculation system (including the pump) for this example.
That would really help pull some of the other aspects of a Domestic water system together.
Finally, are there any fundamental differences between sizing using UPC vs IPC (other than the page numbers of the charts/tables)?
This is really an outstanding series of videos. Thanks again for clearing up some aspects of basic system design.
Water heater sizing is actually pretty basic when you get right to it. It is based on the first hour rating- the amount of water heated in the span of an hour, how many restrooms there are, and how many bedrooms. You'd think it would be based on something else [Table 501.1(2)].
these videos are fucking amazing. went to school for plumbing and about to take my journeymans exam here in maine and i love your videos to refresh my memory of everything i need to know!
I believe the Maine code was written based on the UPC and not the IPC. If you have any questions please email me at gorhambm@outlook.com and I will try to coach you through. I love hearing about these videos helping apprentices!
This Was Awesome! Thank You
Thank you for the kind review!
Thanks a lot for the explanation and you efforts keep up..
It's my pleasure
Thanks for ur explanation all ur videos r really helpful
Thank you for watching and the kind words!
Love the video. Extremely helpful!
Was wondering if you could give examples if a house had multiple lawn sprinkler heads?
You would have to get information from the heads themselves, like what volume is needed for each head. Then you could use the sizing methods from Appendix A (there's a video on that type of sizing method) in order to properly calculate gallons per minute to fixture unit equivalency.
That was really good!!
Thanks John!
You jumped from 23.5 to 31.5 without kind of an explanation but I was able to figure it out. You did the 23.5 then added the 5.5 but after the water heater towards the meter you have to add the dishwasher back into the total count in order to get the total to 31.5. I was confused but figured it out. I appreciate these videos hopefully you can do a waste drawing soon. 🙏
You got it! I'll do a waste one this weekend!!!
@@BGsPlumbingClass you're awesome brotha 🙆♂️
Kind of, and I actually have a question about that. The units that weren't accounted for in the branch to the water heater are the CW and LS, because their cold water fed upstream of the water heater. So add those 5.5 to the 23.5 and you get 29 fixture units. The other 2.5 come from the hose bibb that's upstream and has no hot water. So, should that common line leading to the water heater actually be 29 fixture units and not 31.5, because it's beyond the feed to the hose bibb? It may be negligible, but in a different example/situation it might make a difference, so I'm wondering what's correct. Thanks!
@@scottadams364 If you look at the 34 minute mark, you'll see that 19.5 fixture units are required for the water heater. That is to say that if the hot were turned on to every fixture that uses hot water at the same time, enough volume must go through the heater to meet that demand. So, the clothes washer, laundry sink, etc has to be fed through that line as well as the cold supply upstream. This concept- and the hose bib concept- is probably the most confusing out of the whole process. Look at it as a different route to supply water to a fixture. Hope this helps clarify, if not reply again and I will try a different approach.
Thanks for the Video! Can you share some exercise practice sheets like the one you showed here so that we can have some practice on? A pdf version with an answer sheet. Thanks again!
I will! Email me at gorhambm@outlook.com and I will send some your way!!
Hey Ben, one of your students here. Just watched this video and going to try to size out my parents’ cabin remodel here in Blount County. But hey, I guess I should see if IPC standards are different when it comes to supply line sizing… 🤷♂️
Speaking of, when you gonna switch over to IPC?? I think I know the answer there…
Daniel, there is a significant difference between the two codes- more than I expected for sure. The UPC is a much more detailed and specific code. I believe I mentioned to you earlier that IPC sizing is similar to Appendix A in the UPC.
Also, I may have to switch to IPC, but my heart belongs to the UPC- forever.
Great illustration, thank you! One question for you. How does footnote 3 from Table 610.3 come into play? It is in the CA Plumbing Code which is based on the UPC. I believe this footnote should also be in the UPC.
"3 The listed fixture unit values represent their load on the cold-water building supply. The separate cold water and hot water fixture unit value for fixtures having both hot and cold-water connections shall be permitted to be each taken as three-quarter of the listed total value of the fixture."
That is all true. However this exercise was actually done with the California journeyman exam in mind. The exam does not account for that exception.
❤thanks you
So very welcome!
When I was living in the philippines, I rented an apartment. My psi was 1 during the day, 5psi at night. I tried to explain to the landlord why this was happening. The other tenants thought this was annoying but no big deal. The landlord would continue to spend lots of money on plumbers that didn't understand any of these concepts. I started to feel like a plumbing god...
Keep knowing, learning, and understanding our concepts and there's no stopping you!
love your videos helping me out in class. do you happen to have a video on the Hazen Williams formula?
I don't, sorry. I was also asked if I had one for Hunter's Curve. If I had gone into that, I think my students would've dropped. If you'd like I could look into doing one in the future. I wanted to get into the shift in water demand, which is causing our industry to rethink sizing methods. The fixtures of today are using far less volume than - say - 75 years ago.
This video is good but a little misleading...the code states that we are to use the full fixure values listed in the UPC code book to size the cold water supply to the house as well as to size the meter, however, what the video is not telling you is that when sizing individual hot OR cold interior sections of water piping, you indeed can reduce the listed fixture value by 25% for any fixture that has both hot water and cold water going to it. In other words you can multiply the fixture unit by 75%. This can drastically reduce the sizes of different sections of your water system.....And you will not starve any of your fixtures of water by using this method as its in the code book.
You are absolutely correct about the 75%, and on top of that, you could even size according to bathroom groups. The purpose of the video was to go over the basic sizing parameters based on the journeyman exam for the state of California. The exam does not cover the 75% method, which is note 3 in table 610.3
I appreciate the feedback, and thank you for bringing up this additional option.
Please clarify this for me. Why are you adding the Dish washer hot to the total fixture unit value? You also calculate it when adding the hot? It seems like it is in there twice?
Great question. In this example, the dishwasher is ran as it's own supply. It was done strictly as a sizing example. Much like a dish washer in a commercial situation. In this exercise, I'm also not utilizing the 75% method of supply due to the fact that it was a sample of what the journey level exam uses in the state where I instruct.
I wonder if it would make it easier to explain or understand the value of total FU on the section of pipe immediately upstream from the hot water heater tie-in as being equal to the total FU demand from the WH plus the total FU value from all fixtures downstream of the WH that use cold water only. In your example: WH demand= 19.5 FU+ 7.5 FU(WC 2.5FU x 3) + 3.5(HB1 2.5FU + HB2 1FU)= 30.5). Just a thought to hopefully make it easier to understand.
I really need to do a couple more of these examples. Also, since the codes are readjusting the way we size water systems, it is important that a new example be done. Look for it- eventually (gotta make time to do them).
Excellent teaching! I've been learning California Plumbing Code which base on UPC for a while. 2 questions here please, when I use table 610.4 to locate the supply branch's size, I always need to use the minimum pressure for the pressure range column? If the water pipes are below the meter(This video demonstrate all fixtures above the meter), do I need to still use the minimum water pressure minus the pressure loss of 0.5psi/feet or the pressure loss shall be always calculated by the highest outlet? Thank you very much!
Excellent question! In your case you will still be using the lowest available pressure, which will be the highest point still.
i thought if you had a dishwasher it would just be 1.5 with the kitchen sink? you wouldnt actually add both fu numbers
I neglected to mention in the video that if the dishwasher were off the kitchen supply it would be 1.5 fixture units. I have this example set up as though the dishwasher were set up separately. I always do it that way in class. You are correct.
I’d like to know why you added 1.5 on this dish washer because table 610.3 say kitchen sink with or without dish washer is still 1.5 but on the video you counted 3.0
Great question. At the time of this video, we (the class) had discussed an independent dishwasher, and how to size that way.
Question: Do WSFU convert to 1-GPM? So 31.5 WSFUs would equal a total volume of 31.5GPM Quantity of Water supplied to the entire system, for all 19 fixtures to use proportionately?
Short answer is no. The fixture unit calculations were originally based on Hunter's curve and a "scientific" method of estimated occupancy. I believe you asked in reference to the curve in another question. So I will explain a bit in that question. But to this one, no the fixture unit value is not based on a gallon per minute basis- great question.
Hello. I love your classes. I have a question for this lessom. How do I optain the total developed lengh???
The total developed length is the distance from the meter to the furthest fixture. Imagine how a drop of water will get there. If you wanted to get exact, you will have to take into consideration the type of material and the distance equivalency of each fitting. For example, a 3/4" copper 90 is approximately 2.1 feet- according to Table A 104.4(2)
@@BGsPlumbingClass Thanks you very much! I really appreciate your help.
My pleasure!
why is it that on the chart there are some meter line sizes bigger than the building supply line size
The 3/4" meter with 1/2" supply is not for 1/2" building supply but for the branch size. And the others are due to the distance to fixture unit relationship. A larger meter size will accommodate the volumes fixtures at greater distances require that the smaller size can't meet.
what do you do if pressures are less than those inside your table
Sorry for the delayed response. I believe I just answered you in a different inquiry, but in case you get this one first, I will point you to another of my "lectures". The video on Sizing According to Appendix A will benefit you in your case. If you have questions, please feel free to reach out.
How do I take your class?
Hi man I am new to plumbing and would like to know more. So after you size every pipe of the house, in real life would you just choose the largest pipe from the meter and use that for all pipe size in the system instead of using different sizes from the calcs?
I'd run the recommended size. Without getting too technical, If you oversize then you will have a slower velocity and the possibility of any "solids" settling on the bottom of the pipe. That could result in the tubing developing a leak through corrosion from within.
Thank you so much for this video. Do you have more design classes? like in Udemey or so? thanks
Please email me at gorhambm@outlook.com and we can discuss what it is you specifically are looking for. I may be able to help.
Hello Sir . Do you have any program I can enroll in . I have my exam upcoming February. I’m from Ontario Canada Thanks
What code do you adhere to in your area?
Hi man here’s another question, does it matter what the piping material is (PEX or Sch. 40)…will it not affect the pipe sizes? Most of my projects are in Cali. What type of piping material should I use for outside (from water meter to house) and inside house?
The type of material used is going to be contingent on the local authority. Some don't allow PEX underground. I prefer a copper supply underground, however for larger diameter supplies I've used Sch 80 PVC as well as C900
I have my nitc test on Tuesday and I'm watching this video and hoping will help me . This one I'm understanding but one drawing has more than 7 WC with flushometers and to look at footnote 7 and I got lost..
I am so sorry for only now getting to you. How did you do on the exam? Let me know at gorhambm@outlook.com and if you would like some extra assistance, we can figure out a time for a Zoom.
I think your videos are great. I just recently informed about you. How about doing another water sizing for public use. Table 610.10 has me 😢
@@nuttagutta7445 Great idea!
Thanks for the video. Is the total developed length from the municipal point on the street to the point of entry in to the building? Please clarify
The total developed length is the point from the meter (at curb typically) to the furthest point in the system itself. In other words, the furthest distance a drop of water has to travel from leaving the meter to dumping out of the piping- either through a hose bib, a shower, a kitchen faucet, etc.
@@BGsPlumbingClass Thank you sir. In Nigeria, we make use of an overhead tank erected by the side of the apartment. So the TDL in this case Is from the point of discharge of the storage tank to farthest water outlet, right?
@@paulakoh4870 Yes sir.
Can you please make a video about natural gas sizing ?
I actually did. I did an example of both the longest length and the branch length methods. Look for it on my channel and let me know what you think.
Dear sir,hope u r doing well .what will be the maximum distance between two manhole as per standard if the pipe size is 6” or 160 mm with a slope of 1:100
Manholes for sewer lines on a property fall under section 719.6 of the 2018 UPC. It says they are not to exceed 300' apart, but must be approved by the authority having jurisdiction. A building sewer cleanout follows the same requirements as a building drain- 100' max, not to exceed 135 degrees. That is section 719.1
so would you be running 3/4' valves for your autowasher and tub/shower?
Not at all. Look at a kitchen faucet. If the faucet is being supplied by a 3/8" supply off the angle stop, does that mean a 3/8" water branch can run 100' and still provide the required volume and pressure during use?
@@BGsPlumbingClass oh yeah youre right, the angle stops are reducers
If questions are never asked, knowledge is never gained.
Hey homie, I got the kitchen sink, let's roll! LOL!
I should've forgotten it again!!! Hahaha!
Hello, I have been instructed to use the “75% method” by others when calculating fixtures with both hot and cold for branch and fixture sizing. Why would you not use this method?
The way I look at it, if we were to do the 75% method- which is fine- then the sizing would be a bare minimum. With the sizing done here, you will have little to no chance of starving a fixture its' volume.
@@BGsPlumbingClass thanks for the reply. I am trying to size my renovation but showing that I will need a 1” water heater, which are hard to find here. I have 78 psi and a 3/4” meter with a 80’ developed length and 41 fixture units… it’s crazy for only 3 bathroom home! Maybe I’m doing something wrong.
@@rocky5678 Dennis if you want we can continue via email at gorhambm@outlook.com, I could get some extra information from you.
Im confused if anyone can help me. I've been using the 0.75% method. Why is he just adding the FU and finding his pipe size? I have my test 2/17/23 Im located in LA.
This video was based on the uniform plumbing code, and at the time in the state of California where I was, the journey level exam did not test on the 75% method. You are based on the principles dictated by the International Plumbing Code- kind of. If you need assistance please email me at gorhambm@outlook.com and we can collaborate. The goal is to get you through that exam. Looking forward to hearing from you.
Good question Southlake. I had the same concern. When sizing the water main and water meter, use the full fixture value written on the fixture value chart in the code book for all fixtures... however when sizing separate interior hot or cold water line branches, the code says if a fixture has BOTH hot and cold going to it , you can reduce the listed fixture value by 25% or in other words figure the fixture at 75% of the fixture value listed on the chart in the code book. This can drastically change what size your interior water piping needs to be.
Shhhessh
I hope you got something out of the video. If you have any questions,, I'd be happy to assist. Just let me know.
Much love, i passed my test in Texas. Thanks for what you do.. they had more questions that you went over@BGsPlumbingClass
That's great!!! Congratulations!!