Calculating a 45 degree offset piping system / Tradestutor
HTML-код
- Опубликовано: 7 фев 2025
- This video goes through naming the parts of a piping offset as well as going through a couple examples on how to calculate the offset and the travel in a 45 degree offset. Make sure to check out the next video in the series once you've watched this one.
The 22 1/2 degree offset: • Calculating a 22 1/2 d...
![Seungmin "그렇게, 천천히, 우리(As we are)" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/kAzmhLHePqU/mqdefault.jpg)
Finally, a pipe trades video in English, with proper audio and without annoying music in the background! This channel's a keeper.
Thanks Theresa.
Home handyman plumber. Where do I find info on fittings to subtract from travel to cut the pipe to glue up dimension?
I am Currently enrolled construction engineering, the plumbing theory instructor who always bring stories in class instead of teaching to sum it, this video has taught me how to calculate offset. Thank you.
Hello Robots Boner:
I'm happy to hear this helped you. There is nothing more satisfying to me when I can help someone understand a concept. I'm a plumbing instructor myself and the person I learned from was fantastic at helping make concepts simple. My goal has always been to continue that. Thanks for the compliment! take care
Tradestutor- Thank you in advance, I just took a test to advance my career in the pipe trades industry and this helped me tremendously. I will be visiting your channel here frequently to be sure i am learning well! thanks again!
BP
One of the only videos that I finally understood offsets you explained it so simple thank you
Thank you and thanks for watching.
@@tradestutor1191 do you have a video on rolling offsets for welded pipe and fittings
@@liquidmetal778 Nothing specific for welding. Sorry.
Awesome explanation for that and your voice is very easy to hear and understand thank you so much for producing this video .
You're welcome and thanks for watching.
Thanks for your help I really needed it here at work nobody wants to teach you anything they're scared you gonna take their job away.. pipeline field
THANKS...I UNDERSTAND YOU BETTER THAN OTHER PAGES...DON'T GET ME WRONG THEY'RE ALL HELPFUL BUT YOUR CHANNEL IS IN MY OPINION BETTER TO UNDERSTAND. THANKS AGAIN.
Thanks Luis: I'm glad it helped! Take care
I do contract welding and this is a great tool to get the job done
Thanks Eric:
I'm glad it helped.
take care
Thank you I ran into this at my job this really helps
You're welcome Andrew. Thanks for watching and I'm glad it worked for you. Take care and have a great weekend.
A very good explanation. You forgot one calculation. You need to subtract center of the pipe to 45 deg fitting. From the centerline of the 45 to where the travel would make into the fittings. that would be the travel pipe length.
I was thinking the same thing aren’t you supposed to subtract the fixture allowance
Thank you! This is exactly what I needed to know.
Great tutorial. In plain english and no bullshit, now i get it.
Thanks Bill. I'm glad it worked for you. Have a great day and good luck with your studies.
When measuring is it to centers of each pipe then deduct for fittings
Thank you for your videos I will be watching a lot of them
Thanks Devin. I'm glad you enjoyed them. Thanks for watching!
TSR is easier for people to remember. Travel, Set, Run. 6 syllables down to 4.
Thank you for explaining it so well!
You're welcome. Thanks for watching.
Excellent explanation bro 👍, thanks
thank you i needed this for chopping the roof of my car
You rock, teacher! I really appreciated thta.
You find the travel, by saying "1/Sin(angle) , in this case 45, but you can do it with any angle. If you want a 30 degree offset its 1/Sin(30)= 2 , so you multiply your offset with 2 in that case
You get 24.04, but don't you have to subtract both your take offs for your 4t degree bends?
Thank you he always goes to the point. Which is what I like. Thank you again.
true! this was really educational, I am a plumber and thank you for the video! Roarr!
You're welcome and thanks for watching!
Does that include the fitting takeoff or do I still need to subtract for that?
Thank you sir... Im new. i was told to do rolling offsets without degrees
This really help with my duct work. Thanks man!
Thank you and thanks for watching!
Did you have account for the 45s. Or should I say, do you subtract half the 45s after you multiply your offset x 1.414?
Very good explanation
Thanks. I'm glad you enjoyed it.
This is so helpful thank you
Remember, the travel length is the distance from the fitting center to center. You must subtract the "A" value at each end to get the pipe length.
Don't you have to do take offs for the 45 after you get the travel piece
How do I mark pipes at correct angles to form end result of offset?
great presentation. keep them coming
Thank you. I'm glad you enjoyed it. Take care
If the pipe is screw in pipe do you add the 45s or does this method counts the pipe being screw in into the 45 fitting?
So helpful video ❤
I did 42 x 0.414 is that just for 22.5?
At time 3:15 when u mentioned 17... Is that 17 inches?
It is good to use inches or mm? or doesn't matter the unit of measurement?
So I tie in watermain all the time.. how would I find the angle like should I use 45s or 22s
Here is what I’m looking for . I work with ac ducts . So how do you calculate the the travel when it comes to ducts . Let’s say I have a 8x8 duct coming down the roof that has to be connected to a ventilation grill . The grill is also 8x8 . And they give a straight line of duct thats 8x8 and we have to calculate how to cut it so the the duct coming down the rood connects with the ventilation grill
Great video Thank you. It will help me in the Gas Distribution sector i am in.
Thank you and thanks for watching. Glad you enjoyed it! Take care.
No comment on subtracting for the amount of straight in the Els ??
Thanks alot for this video. Now i finally understand how
You're welcome. I'm glad it helped.
How you calculate your travel for different offsets from poin a to point b maintaining the offset between the travel pipe?
Thank you straight to the point.
You're welcome. I'm glad you enjoyed it. Take care.
But how do I find the length that I need to cut the pipe on the advanced side?
Can I just get this for laying out framing?
1.414 became very easy to remember when I did the math behind it and realized it's just Square root of 2.
Hi, I like your video. Thanks
Hi Sohail. Thanks. I'm glad you enjoyed it!
Let's say that I want to apply a certain +/- degree of pitch. What's the simplified method then?
wish my foreman taught like this
Thank you! Simple and to the point!!
You're welcome. Glad you enjoyed it. Our goal here at Tradestutor is to eventually have 100 to 200 clear, straightforward and easy to understand videos dealing with trades math and science. Good luck with your studies!
Is the travel piece considered vertical
It's the same concept and formula either way
I work in hvac hanging duct and i always struggled when it comes to using 45. Will this method work for duct work too?
Hi Miguel: Yes, this should work for HVAC as well. Just be real careful as everything is based off the center of pipe or in your case the center of the ductwork.
@tradestutor1191 thank you i appreciate 🙏
.707 in reverse also works
COOL video. Well done.
Thanks. I'm glad you enjoyed it!
Thank u now i know to offset 45degree angle
So before the conduit is bent, do i mark two different points with 24.04 inches in between?? (for the first example)
You do not bend the pipes, you cut it at whatever link you need and use 45 degrees elbow at each end
Awesome simple and quick
Thank You. I'm glad you liked it.
What is the purpose of calculating an offset? What's it for?? First year apprentice and I'm lost..
thank you for saving me
I'm glad it worked for you and thank you for watching. Take care and have a great weekend.
THANKS FOR TIPS
Great video thank you
Hi James: You're welcome. I'm glad you enjoyed it. Take care.
Great video
Thanks shaun. Glad you enjoyed it. Take care!
Hey wasshup I’m in the plumbing trades UA local and I had a lil trouble with the offset cause I’m class they move kinda fast but I watched this video and now I understand it a lot more I just wanna know do you know a website I could use to help me practice with like quizzes etc
Good morning Bossman. Which local are you part of? I used to belong to local 170 in Vancouver. I even taught at their school for a couple years. Thanks for watching and I'm glad you enjoyed it. Take care
Nice video... Thank u...
What do you do when your advance is a larger number than your offset
Hi Curtis: If that is the case then you most likely won't be dealing with a 45 degree offset. You'll have to use trigonometry in order to solve for the travel if that is the case. You could also use the pythagrous theorem to calculate the travel. Take care.
question: I am having trouble wrapping my head around this concept. What if I have to find a travel for a 45-degree offset and my offset is like 3 feet 4 1/4 inches? The two measurements for one offset are throwing me off
But you said you know 2 parts of the equation I think without realizing it. Your offset and advance will always be the same on 45 offset! So wether you know one or the other doesn’t matter, multiply by 1.41 and then subtract your take offs from each 45 which should give you your exact travel measurement.
@@-slurmdaddy-8147
Thank you so much.
I jyst started my plumbing math class.
@@badger3184 me too lol good luck bro
@@-slurmdaddy-8147
👍
1.414 where is this from and how would you calculate for other than 45?
You need to use this formula:
1/Sin(angle)*Offset
So fx, you want a 30 degree angle, its 1/Sin(30) = 2 and you multiply your offset by 2 to get the travel.
Is advance the same thing a "run"? Please need your help y im confused about the terms
Thanks for sharing with us.
A question: this work for what size of emt?
Hello and good morning. This will work for all sizes of emt. Take care and thanks for watching.
What if they aren’t parallel?
why 135° bend known as 45° ?
hey, do u know any formula that you could use when you have a 45 offset but there’s a difference in the distance apart between pipes and height
That's a whole other video and formula. its one that I'm hoping to make at some point.
I have another question regarding this, say you have a pipe running horizontal and the end of that run is a Y fitting, but then after the Y you need to install a 45 fitting. My question is, how do you find out the length of that pipe in between those two fittings to hit the center of what you're goin for? In relation to the diagram here, as an example (measuring from East to West direction from a wall) say the one pipe is 25" off the and then the center of a hole for a bathtub lets say is 60". Do you subtract those numbers and then divide that by 1.414 to get the length of pipe that is in between the Y fitting and the 45 fitting?
great, thankyou sir.
Do you do tutoring online by any chance? I live in BC and am looking for a tutor for my Level 2 plumbing
Sorry Danny: At this point in time I'm not set up for tutoring. Thanks for watching though and good luck with your studies.
Thanks you so much!
You're welcome. thanks for watching
Thanks
Great vid, i just have a question when applying this "in field" say you have one pipe running parallel with the wall but you have a 3X2 Double Y with a 45 on it to pick up another fixture . I'm wondering in this application would you measure off the wall to the center of the 2" 45 that is attached to the Double Y and then get another measurement for the stub down pipe off the wall too? Then do you take those numbers and subtract them, does that give you the "travel" then you divide by 1.414?
Hi Jed: I'm having a little trouble picturing what you are talking about. Whatever the case there will be similar numbers used to calculate the length of the pipe and the number 1.414 will be at the center of it. Thanks for watching and I hope this helps.
I like you your video
So helpful thank you !
thank u so much for your vidio. i am very interested to increase my experience in position line inspection/ cheker
You're welcome. I'm glad it worked for you. Take care.
Great demonstration. But you forgot that you need to deduct the offset of your 2 45s from the offset as well. To get the correct length of your travel piece of pipe , copper, duct work. What ever you are running. Well as far as round goes.
Hi Ma Re: The video was just meant to show the distance from one horizontal pipe to another. I have another video which goes through fitting allowance which can then be added to this video to help get the correct measurement. Thanks for watching.
Very simple thanks
Do you teach one on one tutoring?
No. Sorry.
It works in a different size of pipe?
Yes, it works for all sizes of pipe
How do you calculate using 11° degree bends?
Hi Sergio. For that you would have to get into trigonometry. The numbers I use are trig numbers but just some of the common ones. take care
@@tradestutor1191 thank you ,I really appreciate it 🙏
After finding the travel you still have to takeoff for 2 45’s to get your end to end measurement
That’s the part that I’m looking for. An old co worker of mine, taught me this formula. I didn’t use it often so I forgot it. But I remember him telling me multiply your offset x 1.414 and then subtract half the 45s. I’m the sheet metal industry so I know is a lil different.
The 24.04 doesnt include the laps on both 45s right.... so I'd add 3" or so.for that as well?
You are correct. It does not include the laps on both 45s. You would have to check a fitting reference guide when dealing with fitting allowance .
Useful
.how to get the advance in 45 degres offset?
Hi Jason: As it turns out, the advance and the offset are the same length. So if you have an offset of 15 for example, the the advance is also 15. And in the end the travel is 1.414 times longer than either the offset or the advance. Hope this helps. Take care.
More videos please
Hi, I made an app to calculate this a few years ago called - Simple Offset Pro on Android. Hope it helps :)
Hi
45° to 45° ok but 30° to 60° how to connect that pipe elevation any formula
Hi Thiramulai:
You would end up using a different constant for that. I haven't made that video but now that you've asked the question I think I'm going to make that one. Look for it soon. Take care.
1.414 is the "secant" of a 45 deg.angle. It is also the square root of 2. Using a trig calculator(like the TI-30xa cheap) punch 30-cos-1/x will give you 1.15, the secant of a 30 deg angle. Multiply that times your "offset" distance for the "travel" length to cut. Do the same for 60 or any angle to find the exact hypotenuse. Not as hard as it sounds. Don't forget to subtract the coupling length. times 2. When you have mastered this, you can build hip roof rafters and many construction problems.
Can you help me piping foreman client interview
does this work with 3/8 hydraulic tube bending? I bend a lot of tubes and I am not good with math so I make templates and copy them to the tube.
Hi Punisher: Yes, this should work for that purpose although I'd do a test piece first before making a whole bunch of them.
Yes, it will work with any size pipe, you offset is what your after, so the size of the pipe doesnt matter. Its alway 1.414. Now if you are doing Ductwork i use Owl.. OFFSET X WIDTH ÷ LENGTH but with 45's i use 1.414
24.04 whats that on a tape measure?
Good question. Check out the video I put out a couple days ago which changes decimals of a foot into inches.
Nice....
But when you measure the advance in the field the 2 45 degrees angles aren't there, what you must measure then?
Center to center between the pipes
Or either divide the offset by 0.707 for a 45 degree or 0.5 for 30 degrees.
Multiply by .707 to find travel