Thank you for taking the time to make this educated video for trades. I'm a plumber who didn't understand this for the longest time, but i now fully understand. I work and run cast iron and nothing looks so nice when you make beautiful offsets.
Great video. Ot took me a while to find someone that explains things this well. So many useless videos that are 10+ mins and still couldnt explain this. Thank you 🙏
Can you share the formula for the 45* run lengths when doing a horizontal to vertical transition using 2x 45* fittings? The application would be to use this equal spread offset formula and also know the calculation for the 45* slope cuts of pipe when transitioning from horizontal to vertical. Thank you
Thank you for providing these videos, currently completed level 2 pipefitting and will be taking 3 and 4 this spring. This is a good basic refresher. Look forward to viewing all the other videos (especially on gas as 4th year we qualify for a "B" gas ticket) Any rigging and slinging videos, fire extinguisher classification, etc?
Hi Donald: thank you I'm glad this helped. I'm just trying to concentrate on math and science for now. Rigging, slinging and fire extinguishers might come in the future. What school are you attending?
What if its a 30 degree or any other degree? We're at a project where we're running (7) 4" inch rigid runs from a box, over to another box. We have a straight coming out of the box -a pre bent 90 - a 30 - a straight - a 30 - straight - 90 - then straight on the other end going into the conduit box. We're aiming for a 6" inch spread but all the measurements are off. The run from the 30 to the other 30 all the couplings are touching and closer together. We have all the straights coming out the box going to the 90, the same lengths. Thats where i think our issue starts.
Haciendo algo de trigonometria, obtuve la siguiente formula: Extension=spread x tan(@/2) Donde spread es la separación de centro a centro Y @ es el ángulo del offset, por eso si es 45 tan(45/2) es 0.414 Si es 30 tan(30/2) es 0.268
I enjoyed the training, but where is the formula 0.414 derived from? Okay, I looked back at the comments and found where you answered my question. What might be good to explain here is that the center point of the elbows are at 22.5 degrees, in relationship to each-other.
Hello and thanks for the nice video. How about if they start equal and they finishi no equal. Ex. The start with 290mm center to center and they finish 260mm center to center. Thanks
Hi William: 0.414 is a trigonometry number that is used when dealing with triangles with a 22.5 degree angle. Even though the fittings are 45 degrees there are 2 identical 22.5 angles created when the pipe turns. These two triangles are what form the trigonometry for the question. As it turns out the tangent of a 22.5 angle is 0.414 and this is the number we end up using in the formula. Although I didn't use trigonometry to sole the problem the number comes from trigonometry. Hope this helps and thanks for watching.
In theory yes, it should work for anything. I would give it a try first through. Sheet metal might have other variables involved that I'm not aware of.
I'm confused we just did this in class for a 45 and they say to multiply by 1.414 and for 22 1/2 then we multiply by .414 , I read an explanation you gave to someone else that two 45 would be considered 22 1/2 degree but what if you had two 22 1/2 and you wanted to know the offset
Hello: I'll try to answer that the best i can. When you have an equal spread offset using 45 degree fittings the change of direction (45 degree) ends up creating two identical triangles where it changes direction. As the change of direction is 45 degrees the two triangles formed each have a value of 22 1/2 degrees. We can use trigonometry to find the values in those triangles. The number 0.414 comes from trig and it defines the length of the opposite side of the triangle which has an identified angle of 22 1/2. That side is also known as the extension when it comes to equal spread offsets. The adjacent side is also known as the offset. In the end the extension is 0.414 times the length of the offset. I hope this helps and thanks for watching.
Hi Hans: The only other angle we generally work with in the piping industry is a 22 1/2 degree and there are different numbers for that. This is all based on trigonometry so your best bet is to either find some trigonometry tables or use your calculator to find the correct numbers to work with. Thanks for watching
Hi RidetoLive199: That works out to be a totally different scenario with different calculations. I might have to make a video about that situation. Thanks for watching
@@Lynchings Hello Hipster: Although there are constants which you can memorize and use in this situation, its best to learn trigonometry for most situations. I'm just going over the most common piping angle which is 45 degrees.
Hi Todor: The trigonometry numbers come from dealing with a 22.5 degree angle. Although the fittings themselves are 45 degrees when the piece of pipe changes direction the numbers are based on the fact that it creates two 22.5 degree triangles. Therefore when you are using trig its based off of that. Its a bit confusing as you would think its based off of a 45 degree but its actually not. Thanks for watching and I'm glad you liked the video.
Really liked your video but it falls a bit short in the complete picture of parallel offsets. As it only gives the example for 45° parallel offsets. That said I LOVE the quality of the video just wish you had gone more into the full formula to make people more versatile. This video is specifically only for a 45° bend. but if you wnet just wee bit more into the explanation of the formula this could have been all inclusive instruction. The formula for this is TANGENT ( 0.5 * Angle used) * Spread desired = Extension or in this case TAN(0.5 *45°) * 7" = 2.90" IF you use a different angle for example a 30° then the extension changes to 1.875" That formula, in that case, looks like this TAN(30° * 0.5) * 7" = 1.875" Make sure you are using Degrees and Not radians on your calculator
@@mikeyohanna1197 HI Mike: This one will not work for 90 degree angles. That would require a different calculation. Maybe I'll work on making another video for that. Take care.
so why don't you follow thru our measuring tapes don't have decimals!!!! finish it ... 2.9= approx. 2-15/16" a real formula is ,. spread =Tangent 1/2 angle bent + spacing you want from center of conduit or pipes.
HI Ass ho: This video was simply to show how the formula worked to calculate the equal spread offset. Changing a decimal to a fraction can be found in another video is you need to calculate that. Take care
Spread x Tan of 1/2 the angle. For 45 you use tangent of 22.5. For any other angle divide angle in half and use the Tangent for that degree. Example 60 degree turn use the Tangent of 30 degrees X spread to find the distance described in this video.
Thank you for taking the time to make this educated video for trades. I'm a plumber who didn't understand this for the longest time, but i now fully understand. I work and run cast iron and nothing looks so nice when you make beautiful offsets.
Hi Patrick: I'm glad you liked it. I hope you've had a great Christmas season and have a great new year. Keep making those beautiful offsets!
Great video. Ot took me a while to find someone that explains things this well. So many useless videos that are 10+ mins and still couldnt explain this. Thank you 🙏
omg thank you, ive been struggling with this forever, most of the time i just find reference pieces and try
Awesome video, exactly what I needed! Woo
Hi Bradley:
Thanks so much. I'm glad you liked it!
Best explanation, thanks so much!!!!
Been watching several video of parallel offsets, this is by far the best and easiest, very well explained, thank you
That's nice to hear. Thanks for watching.
Homlmez iz way better
Just what I needed thank you!
You're welcome Rocko. I'm glad it worked for you.
EXCELENTE INFORMACIÓN HERMANO.... GRACIAS!!!👍
De nada!. I'm glad you liked it!
Thank you for the informative video.
Do you have one on making multiple pipe run transitions from vertical to horizontal using 45’s?
Thank you
Can you share the formula for the 45* run lengths when doing a horizontal to vertical transition using 2x 45* fittings?
The application would be to use this equal spread offset formula and also know the calculation for the 45* slope cuts of pipe when transitioning from horizontal to vertical. Thank you
hi when you say keep the pipes the same length after you find the extension do you mean the pipe with the extension or the pipe without the extension
This helped me understand 45 offsets in the simplest of ways. You should have added 2 more lines in there for more depth! But good information
I'm glad it helped. Thanks for watching.
Thanks for your sharing
I'm glad you enjoyed it and thanks for watching.
Thanks buddy 🇺🇸
You're welcome. Glad you enjoyed it.
Thank you for providing these videos, currently completed level 2 pipefitting and will be taking 3 and 4 this spring. This is a good basic refresher. Look forward to viewing all the other videos (especially on gas as 4th year we qualify for a "B" gas ticket) Any rigging and slinging videos, fire extinguisher classification, etc?
Hi Donald: thank you
I'm glad this helped. I'm just trying to concentrate on math and science for now. Rigging, slinging and fire extinguishers might come in the future.
What school are you attending?
@@tradestutor1191 I am attending B.C.I.T. (British Columbia Institute of Technology) in March of next year for the final two levels
Excellent: Good luck with school!
great, just great, thanks, please do more.
What if its a 30 degree or any other degree? We're at a project where we're running (7) 4" inch rigid runs from a box, over to another box. We have a straight coming out of the box -a pre bent 90 - a 30 - a straight - a 30 - straight - 90 - then straight on the other end going into the conduit box. We're aiming for a 6" inch spread but all the measurements are off. The run from the 30 to the other 30 all the couplings are touching and closer together. We have all the straights coming out the box going to the 90, the same lengths. Thats where i think our issue starts.
Do you still have to take off for the two 45 fittings?
Thank you
Thank you 🙏
You're welcome. I'm glad it helped
Haciendo algo de trigonometria, obtuve la siguiente formula:
Extension=spread x tan(@/2)
Donde spread es la separación de centro a centro
Y @ es el ángulo del offset, por eso si es 45 tan(45/2) es 0.414
Si es 30 tan(30/2) es 0.268
Sirve a cualquier grado?
Easy formula
1)Spread of pipe center to center
2)1/2 the tangent of your degree of offset
1/2 of degrees tangent
X
spread of pipe center to center
Would this work if my pipes are différent sizes?
Does this formula work for a single piece of 8” pipe?
Great! If It is another angle?
Bad ass video
Lol! thanks and thanks for watching
I enjoyed the training, but where is the formula 0.414 derived from?
Okay, I looked back at the comments and found where you answered my question.
What might be good to explain here is that the center point of the elbows are at 22.5 degrees, in relationship to each-other.
very neat.. give us some more Cheers!
Hi Dan: Thanks for watching and I'm glad you enjoyed them. Cheers!
Wow nice sir thxxx
You're welcome. I'm glad it worked for you.
Is the spread Center to Center? Or truly the distance between the pipe?
thank you!!
You're welcome. I'm glad it worked for you. Take care
Thank you.
You're welcome. Thanks for watching.
Hello and thanks for the nice video. How about if they start equal and they finishi no equal. Ex. The start with 290mm center to center and they finish 260mm center to center. Thanks
I would love the answer to this.. can’t find it anywhere
thanks!! im going in to Oil and gas industry ¨tubing¨ and this helpt med alot!! but is it still spread x 0,414 if i wanna bend 30´degree?
It's 0.2679
How do you get the extension number. Say I want to do a 22.5 angle. Is the spread number the same, or how do you come up with the number
Hello: The number for a 22.5 angle would be different. The number used in this video only works for a 45 degree.
Spread times the tangent of half the angle is a better way to teach it because it covers all angles.
Awesome video, how would you do it if you have two 90 Degree elbows? Do you have a video
You simply measure your spread, then add it to your outside line to give you equal centers when turning the corner.
Fits any angle?
wow is in LA any school that i can go to do bending pipe ?
good
Please send a video unequal sprearal offset
Hi there can this be done in millimeters instead of inches? For eg 50mm x 0.414?? Cheers
HI Charles: Yes, its the exact same number (0.414) regardless of the units you are using.
When you measure the spread, are you measuring the sides of the pipe that are closest to each other or center to center
Morning Derrick: Its center to center. Thanks for watching.
Offset. Sit×run
Kitna. Hai
Make on video eccentric reducer formula
can you yell me how you came up with .414 I'd like to know how. thanks
Hi William: 0.414 is a trigonometry number that is used when dealing with triangles with a 22.5 degree angle. Even though the fittings are 45 degrees there are 2 identical 22.5 angles created when the pipe turns. These two triangles are what form the trigonometry for the question. As it turns out the tangent of a 22.5 angle is 0.414 and this is the number we end up using in the formula. Although I didn't use trigonometry to sole the problem the number comes from trigonometry. Hope this helps and thanks for watching.
Can this be applied to hvac/sheet metal 45s and 90s?
In theory yes, it should work for anything. I would give it a try first through. Sheet metal might have other variables involved that I'm not aware of.
Is the spread the inside to inside of the pipe or the centres of the two pipes
Hi Jimmy: The spread is the center to center. Take care and thanks for watching.
Nice
Thanks
EXCELENTE INFORMACIÓN HERMANO...... GRACIAS!!!!!👍
Ive seen this method but they based their measurements off the ¢-¢ of the pipes and not the gap. Can doing this cause issues ?
The measurement should be from center to center. That will be more accurate.
I'm confused we just did this in class for a 45 and they say to multiply by 1.414 and for 22 1/2 then we multiply by .414 , I read an explanation you gave to someone else that two 45 would be considered 22 1/2 degree but what if you had two 22 1/2 and you wanted to know the offset
Hello: I'll try to answer that the best i can. When you have an equal spread offset using 45 degree fittings the change of direction (45 degree) ends up creating two identical triangles where it changes direction. As the change of direction is 45 degrees the two triangles formed each have a value of 22 1/2 degrees. We can use trigonometry to find the values in those triangles. The number 0.414 comes from trig and it defines the length of the opposite side of the triangle which has an identified angle of 22 1/2. That side is also known as the extension when it comes to equal spread offsets. The adjacent side is also known as the offset. In the end the extension is 0.414 times the length of the offset. I hope this helps and thanks for watching.
What is the factor one has to use if your bends are, say, 30 degrees? I assume it will be different than 0.414.
Hi Hans: The only other angle we generally work with in the piping industry is a 22 1/2 degree and there are different numbers for that. This is all based on trigonometry so your best bet is to either find some trigonometry tables or use your calculator to find the correct numbers to work with. Thanks for watching
.2679, it's a trigonometric function of the angle being bent
Use Tangent of 15 degrees (1/2 of 30 degrees) on a trig calculator.
Is your spread based off centers or the gap in between
Hi DIY Doc: The spread is based off centers. Thanks for watching.
Y measurements send pls
Is the spread center to center on the pipe?
HI Spyderx: yes it is.
Now what if the first 2 spreads are 7" and the last one is 10"?
Hi RidetoLive199: That works out to be a totally different scenario with different calculations. I might have to make a video about that situation. Thanks for watching
Wow!
Hi Hector: I'm glad the video worked for you!
Wow
Spread is C2C or side to side?thanks
C2C. thanks for watching!
@@tradestutor1191 thanks man🙌🏼💪🏻
Very clear info,thanks,,by the way,how about 15 ,22.5, and 30, degree bend?,pls?
Change those into a decimal form
how is 0.414 derived ? How you get the ratio?
Hello: The 0.414 is derived from trigonometry. Its actually derived from the trigonometry numbers related to a 22 1/2 degree angle. Take care
How would i find .414's equivalent for 30 degree bends?
@@Lynchings Hello Hipster: Although there are constants which you can memorize and use in this situation, its best to learn trigonometry for most situations. I'm just going over the most common piping angle which is 45 degrees.
Thank you for the explication but why 0,414 and not 1,414? 1/sin 45 = 1.414
Hi Todor: The trigonometry numbers come from dealing with a 22.5 degree angle. Although the fittings themselves are 45 degrees when the piece of pipe changes direction the numbers are based on the fact that it creates two 22.5 degree triangles. Therefore when you are using trig its based off of that. Its a bit confusing as you would think its based off of a 45 degree but its actually not. Thanks for watching and I'm glad you liked the video.
Brother you are a blessing, Im going through some depression from work and I'm seeking to get better at my trade and this enlightened me. Thank you
🍻
Thanks. I'm glad you enjoyed it. Take care
Really liked your video but it falls a bit short in the complete picture of parallel offsets. As it only gives the example for 45° parallel offsets. That said I LOVE the quality of the video just wish you had gone more into the full formula to make people more versatile. This video is specifically only for a 45° bend. but if you wnet just wee bit more into the explanation of the formula this could have been all inclusive instruction. The formula for this is TANGENT ( 0.5 * Angle used) * Spread desired = Extension or in this case TAN(0.5 *45°) * 7" = 2.90" IF you use a different angle for example a 30° then the extension changes to 1.875" That formula, in that case, looks like this
TAN(30° * 0.5) * 7" = 1.875"
Make sure you are using Degrees and Not radians on your calculator
Thanks for this!
Quien me puede dar una mano nesecito trazar boca de pescado con ángulo de 55 grados
Hello Ricardo: Unfortunately I don't speak or write spanish. Sorry. Hopefully you enjoyed the video!
Concige el libro asul
45 degree unequal spread how to calculate
Hi Raj: that's a video I'm going to make in the future
You sound like Sinatra Says
I'll take that as a compliment. Thank you!
@@tradestutor1191 you're welcome. Thanks for the videos. Very helpful
@@tradestutor1191 can this formula work for 90° angles also?
@@mikeyohanna1197 HI Mike: This one will not work for 90 degree angles. That would require a different calculation. Maybe I'll work on making another video for that. Take care.
so why don't you follow thru our measuring tapes don't have decimals!!!! finish it ... 2.9= approx. 2-15/16"
a real formula is ,. spread =Tangent 1/2 angle bent + spacing you want from center of conduit or pipes.
HI Ass ho: This video was simply to show how the formula worked to calculate the equal spread offset. Changing a decimal to a fraction can be found in another video is you need to calculate that. Take care
30°spread offset we can use this formula =sppread×0.414
Hello Bichitra: No, the numbers for a 30 dgeree offset spread would be different. I haven't got around to making that video yet but I will one day.
Sir please send video, spread length is 168mm
no, for 30 degrees the multiplier is .268
Spread x Tan of 1/2 the angle. For 45 you use tangent of 22.5. For any other angle divide angle in half and use the Tangent for that degree. Example 60 degree turn use the Tangent of 30 degrees X spread to find the distance described in this video.
They should name videos like this "how to do things the hard way"
Does the multiplier change based on size of conduit?
Hi James: No. The multiplier remains the same regardless of size of pipe or conduit. Thanks for watching.
no, the size of conduit is irrelevant, It's the angle of bend that is important. Different factors for differrent angles.