What he didn’t explain here is that if you have a calculator with sine and cosine on it you don’t have to remember any constants. For travel of advance you want secant of angle which 1/sin of angle Ex. 1/(sin of 22.5) = 2.613. For travel of offset you want cosecant of angle which is 1/cos of angle Ex. 1/(cos of 22.5) = 1.082. This works for any degree offset like for a 45 degree offset your advance and offset will be the same so you can use secant or cosecant therefore 1/(sin 45) or 1/(cos 45) will both = 1.414. Have the travel and want the advance or offset? Well it’s sin of angle or cos of angle. Sin 45 = .707 1.414 is the square root of 2. Remember a^2 + b^2 = c^2 for right angle triangle, so if you use a unit circle where radius =1 (I know you’re asking what does a circle have to do with a right triangle? Just trust me) you’ll have 1^2 + 1^2 = c^2 therefore 1 + 1 = sq root of 2. Sq root of 2 = 1.414. It’s all trigonometry revolving around the unit circle. hope this helps someone because i just finally made sense of this while studying for city plumbers. They should’ve shown us in high school what these things were used for them maybe I would’ve paid attention in trig class anyway no point memorizing constants when you can calculate for any angle.
HI Theresa: Thanks so much for the positive feedback. My idea is to make straightforward, simple and easy to understand videos. No nonsense. Your comments validate my goals!
Hi thanks for the video couple quick questions when plugging in the numbers is the advance taken from the center of the 22.5 degree fittings? Also is the offset taken from the center of pipe?
A little tip for your viewers, at the end of your video measurement was 14.18 inches. The .18 represents 3/16 For every .06 = 1/16. 16x.06 =96 or 1 inch hope this helps. Retired Steamfitter
thanks, gotta run a little 4" pvc sanitary pipe with an offset tomorrow. i totally get the offset x 2.61 = travel. i just don't see where you use the other formula. you have an offset and fittings.
Hello: I'm assuming you are talking about the "advance X 1.08 = travel? That's essentially a trigonometry number when dealing with 22 1/2 degree offsets. You could use that portion of the formula to find how far of an advance you needed to go. By the sounds of it I don't think that part of the formula will be needed for what you are doing. Note: Don't forget to include fitting allowance when calculating the travel. This video does not take fitting allowance into account. I make another video for that calculation. Take care and thanks for watching
Good day, i got lost a bit heheheh why in 45 degrees. offset and advance are same multiple and division by 1.414 but in 22 1/2 offset and advance are different where to multiple Please correct me if I'm wrong. Thank for
Hi Eduardo: in 45 degree the offset and advance are the same due to the fact that in a right angled triangle both of the other angles are 45 degrees. This means that both are the same length and both use the same number (1.414) in the math. However, in a right triangle with a 22 1/2 degree angle the other angle is 67 1/2 degrees. This means that in order for you to find one side or the other you will need to use different multipliers. I hoped this helped.
How do we know that the constant # we need to use for this degree is 2.61?woud you pls explain and teach us what we are going to use constant number in different kinds of degrees..
Hello Lucky: The constant 2,61 is actually a trigonometry number. If you were to apply trigonometry to this situation you would end up using the 2.61 in your equation. For other angles you could use your trigonometry formulas (SOH CAH TOA) to get the constants you need to use.
Hi Dan: the numbers used in this formula would be the exact same when using millimeters. You would take your millimeters and multiply it by whatever multiplier is used in your particular scenario. Thanks for watching. Cheers!
Hello dodging wave: Those numbers are trigonometry numbers. If you were to find the sine of 22.5 or the cosine of 22.5 or the tangent of 22.5 you would come up wth those numbers.I just skip the trigonometry part and just memorize the numbers and their relationship in the triangle.
Why not use a 30 degree, if offset is 4” , i.e. , obstruction . X’s 2 = 8 . If 1st mark on conduit is 8” . Add 8” , 2 mark is at 16”. Bend pipe first mark to 30degrees. , flip pipe 180. Bend 2nd mark 30 degrees. Job done. We want to get paid , guiseppe. U think the boss want a trig. Major to bend pipe?
What he didn’t explain here is that if you have a calculator with sine and cosine on it you don’t have to remember any constants. For travel of advance you want secant of angle which 1/sin of angle Ex. 1/(sin of 22.5) = 2.613. For travel of offset you want cosecant of angle which is 1/cos of angle Ex. 1/(cos of 22.5) = 1.082. This works for any degree offset like for a 45 degree offset your advance and offset will be the same so you can use secant or cosecant therefore 1/(sin 45) or 1/(cos 45) will both = 1.414. Have the travel and want the advance or offset? Well it’s sin of angle or cos of angle. Sin 45 = .707 1.414 is the square root of 2. Remember a^2 + b^2 = c^2 for right angle triangle, so if you use a unit circle where radius =1 (I know you’re asking what does a circle have to do with a right triangle? Just trust me) you’ll have 1^2 + 1^2 = c^2 therefore 1 + 1 = sq root of 2. Sq root of 2 = 1.414. It’s all trigonometry revolving around the unit circle. hope this helps someone because i just finally made sense of this while studying for city plumbers. They should’ve shown us in high school what these things were used for them maybe I would’ve paid attention in trig class anyway no point memorizing constants when you can calculate for any angle.
great. thank u
I love the fact that you don't have an intro. I have no patience for them.
HI Theresa: Thanks so much for the positive feedback. My idea is to make straightforward, simple and easy to understand videos. No nonsense. Your comments validate my goals!
great video, please keep them coming.
Thank you straight to the point.
Exactly what I was looking for!!!
Easy to understand keep making more videos.
Such a really wonderful !!!
I was watching this to help brush up on my 45°s for my ductboard trunkline. I always knew it was around x3 thanks for that number.
You're welcome. Thanks for watching.
Easy to understand simple language, thnx
OK thank you so much
In pipe fitting or plumbing terminology, it should set, run and travel sides of the right triangle
i am from nepal waaa exelent idea i like waaaaaaa waaaaaaa
Thank you
Thanks ist from the bottom and top of the pipes?
Is 2.61 and 1.08 are the numbers that we can use in any offset except in 45degree?
No should be both sides Sam advance and offset
Hi thanks for the video couple quick questions when plugging in the numbers is the advance taken from the center of the 22.5 degree fittings? Also is the offset taken from the center of pipe?
ALWAYS work from center when pipefitting!!!!!
You’ll have to do the take off for the two 1/16 bend fitting
If the two 22.5° offsets make a 45° left/right (rather than parallel), does this approach still suffice?
For a 45 just measure center to center and multiply by 1.414
Very nice
Thank you. Thanks for watching.
Do you have a 30 degree video ?
Not yet but its on my list of videos to make. Take care and thanks for watching
How to get advice x 1.08?
Is travel formula same for all angles or is it specific to 22.5?
It's specific for the 22. 45 is 1.414 times your offset
Where do you get the the 1.08? and how do I find the right number for all angles. Like I know 45° is 1.1414
A little tip for your viewers, at the end of your video measurement was 14.18 inches. The .18 represents 3/16 For every .06 = 1/16. 16x.06 =96 or 1 inch hope this helps. Retired Steamfitter
thank 👍
thanks, gotta run a little 4" pvc sanitary pipe with an offset tomorrow. i totally get the offset x 2.61 = travel.
i just don't see where you use the other formula. you have an offset and fittings.
Hello: I'm assuming you are talking about the "advance X 1.08 = travel? That's essentially a trigonometry number when dealing with 22 1/2 degree offsets. You could use that portion of the formula to find how far of an advance you needed to go. By the sounds of it I don't think that part of the formula will be needed for what you are doing. Note: Don't forget to include fitting allowance when calculating the travel. This video does not take fitting allowance into account. I make another video for that calculation. Take care and thanks for watching
Don’t forget that this formula doesn’t account for the hub portion of your fittings.
Good day, i got lost a bit heheheh why in 45 degrees. offset and advance are same multiple and division by 1.414 but in 22 1/2 offset and advance are different where to multiple Please correct me if I'm wrong. Thank for
Hi Eduardo: in 45 degree the offset and advance are the same due to the fact that in a right angled triangle both of the other angles are 45 degrees. This means that both are the same length and both use the same number (1.414) in the math. However, in a right triangle with a 22 1/2 degree angle the other angle is 67 1/2 degrees. This means that in order for you to find one side or the other you will need to use different multipliers. I hoped this helped.
A right triangle, so no nedd to complicate the case
sir ok
This fomula can aplly in any size of pipe?
Yes. The same numbers work for any size of pipe.
It is work on hdpe pipe?
How do we know that the constant # we need to use for this degree is 2.61?woud you pls explain and teach us what we are going to use constant number in different kinds of degrees..
Hello Lucky: The constant 2,61 is actually a trigonometry number. If you were to apply trigonometry to this situation you would end up using the 2.61 in your equation. For other angles you could use your trigonometry formulas (SOH CAH TOA) to get the constants you need to use.
@@tradestutor1191 thanks for the reply..hope you will do an tutorial on how to find constant number in all types of angle sir..
How to arrive offset x 2.61
Is metric or inches?
Hello: the numbers can be in either metric or inches. The constants do not have any units applied to them. Thanks and take care
Thanks for these wonderful videos,, what if, I need to convert or work these out in millimetres please email me the formula Thanks
Hi Dan: the numbers used in this formula would be the exact same when using millimeters. You would take your millimeters and multiply it by whatever multiplier is used in your particular scenario. Thanks for watching. Cheers!
hello, can you please give 22.5 degrees Elbow Takeoff/formula.= like 45degrees elbow=1.414 .thank you
wala bang constant number to get 22. degree spool
Where did u get those 2.61 and 1.08
Hello dodging wave:
Those numbers are trigonometry numbers. If you were to find the sine of 22.5 or the cosine of 22.5 or the tangent of 22.5 you would come up wth those numbers.I just skip the trigonometry part and just memorize the numbers and their relationship in the triangle.
1/sin22.5 = 2.613 1/cos 22.5= 1.0823
thanks
@@tradestutor1191 thank you
@@fanznoize thank you sir now I know
What if they are too far apart
90 degree please ?
Why not use a 30 degree, if offset is 4” , i.e. , obstruction . X’s 2 = 8 . If 1st mark on conduit is 8” . Add 8” , 2 mark is at 16”. Bend pipe first mark to 30degrees. , flip pipe 180. Bend 2nd mark 30 degrees. Job done. We want to get paid , guiseppe. U think the boss want a trig. Major to bend pipe?
Hi Robert: Thanks for your input. If you can find an easier way to calculate offsets then go for it!
The most deficuilt that can't explain how to cut exactly by computation way. That you teached mostly people they know already.