How to Compute Takeoff, Spool, Center to Center 90, 45 Degrees Elbow Pipefitter
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- Опубліковано 19 вер 2016
- Piping,Welding,Non Destructive Examination-NDT
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The take off of an eight inch pipe is 5 inches on a 45° elbow. Therefore you multiply that by two and u subtract that by the travel. That gives you the spool size. Also in pipe fitting dont forget to subtract your 1/8 gaps for the welding.
Yes ! 3.175 mm
I want to know how make offset of 300mm cable tray
Also, if the elevation from center to center is 500 on your two 90s, how is it that you only need 109.6 of pipe to tie the two pieces in? What happened to the the other 491? If a takeout for a 90 is 1.5 x Pipe Size... then the take out for an 8 inch pipe should be 12 right? And 24 if you add the other.... Are we doing a different computation here?
check again?
8 is the diameter pipe. Take half of 8, then half of 4, then half of 2, which is 1. Take the 2nd and 4th number which equals 5. That's in inches. Convert to mm and you have 127mm. There are two sides so 127 times 2= 254mm. 707mm - 254mm = 453mm. Explaining how you get these answers helps people, otherwise they are stuck in confusion. The video helped, but there were things i had to figure on my own that you didn't point out. Thanks.
Pat Henry or just multiply 8 in. By 5/8 and u can get the same answer it's just a little simpler
is 90 degree elbow calculation is right can u elaborate.
So the 3500-3000 ELV he has is that in mm? Should I convert the ELV over to inches?
@@junaidkahnn69 no its wrong
how could it be that the sum of the two take offs on example #2 be longer than the whole pipe itself? maybe next time you may consider including the units.
where is the gap b/w the pipe and elbow..so must subtract it to 3 mm gap
what is the 1.414
Please tell me sir.
To find 45° spool you multiply 1.414
And to find 90° spool not multiply 1.414
Why sir please tell me
How about the welding gap why you dont .mention the gap it may be wrong or the spool must be longer,remember 3mm×2(both weld)must be result to failed of the spool computaions..just only asking sir..correct me if im wrong pls...
Hey does this work on dairy sanitary pipe Aswell as schedule as sizes are different????
sir what formula do you use?
Is the elbows long radius or short radius?
90 degree 2 elbow centre you need to minus from 500 (2500 minus 2000) is it right / you need at least 1000 mm difference if you need a spool piece in between then u get a spool piece bro
The difference in between the length, you have to divide 2 and cut each 90*, 54.8mm the center off the 90*
Unclear what is this 1.414
sir hinde n po b inaalis ang gap?
How to know the elevation???
How is the takeout on an 8" inch pipe 15.8 for a 45 degree angle? Aren't you supposed to multiply 8"inches by .625 or 5/8?
its the same bro... for inches it is correct that 5/8 or .625 multiply by 8" pipe diameter.then multiply by 2 elbow. for milimeter or mm it is 15.8 mm multiply by 8" pipe multiply by 2 elbow. depends on what you are using. inches or mm
Where did you get 1414?
you don't use welding gap???
Rex Amolato correct. He did not use welding gap. It is minimum 6 mm (from both side by 3 mm)
45°LR is diameter of Pipe or size multiply by 15.875mm..
additional...u did not give what kind of elbow you've given???
.625??? for 45° elbow
Kailan po natin gagamiting ang 1.414???
Thank you sir
Gd sir my question lng po ako kong ang elbow 45deg 6" ang raduis nya ay 690mm ano po yong tawag don long raduis or short raduis at ano gagamitin na formula don tanks sana masagot mo yan tanong ko tanks...
Sir, is that mm? if so, I think there is something on the last one, 500 elevation is not enough for the two 90 degree elbow with 8 inches diameter, 609.6mm for both take off plus 109.6mm spool length equals 719.2 mm total length. correct me if i am wrong.
his maths showed the offset was to small by 109.6mm not the spool is 109.6 as he said
You are write.
i asking were do get sir 38.1
Jiddha Cornich 38.1 is the takeoff of 1" 90 degree.. . dia x 1.5 x 25.4
exercise number 2 i think their is something wrong on your answer..
how it happen that 609.8mm (2ea 90 deg elbow) is longer than center to center with is only 500mm base on your given EL 2500 and EL 2000 and your cutting lengt is 109.6mm
You should include the two welding gap from elbow to pipe,its 3 mm each gap,multiply by 2, from two joints. Best regards from aboitiz construction com. KAUBAN fitter.
Nalito rin ako.. ang alam ko kasi SPL=Tr-TO1-TO2-WG..
Just elevate the supports that are under the higher elevation run by 6.4mm & you will be fine or shim it by that amount 😃
How do I know I'm multiply 1.141... how do I know ?
Only when you have 45° angles you multiply set or run by 1.414 to find travel
Ang twag sa spool na sinasabi mo ay cut piece or true length ng pipe. ang spool na tinatawag ay field weld to field weld na joint.
thank you sir. more power.
thank you
Thank you for sharing
Where did you get the 38.1 is it a formula?of 90 degrees?
1.5 inc X (diameter of pipe) X 25.4 = Take off
Hi im richard and i do topout plumbing and i always have a problem guarter inch per foot i know there is a pipe in a bathroom for a lavatory that needs a tee but you have to arm over 3 feet and stub out of the 2 by 4 wall with a 90 1" 1/2 pvc i know were the 90 elebow is measure back wards to get the slope correct
Quarter inch per foot
Can u call me 8326738393
Remember to factor in the 2 gaps (3.17mm X 2, typical) when calculating the pup length or you’re gonna have to shim the elevated run 😊😁
we cant put two 90 elbows in 500mm distance
sory sir where does the number 1.414 come from
Furmula yan
Anung size po nang 45degree na pittings
Second one cannot be.. should add more length to elv.
How come the 1.414 please explain. Thank u
Csquared equals 1.414 which is the square root of 2
What do you call those dotted line?
Phantom lines, as listed I’m your IPT manual 😁😊
where did get 1.414 and 15.8
you can use 1.414 for 45 deg. and 15.8 takeoff 45 deg. elbow
the dimensions for 90° elbow are wrong...
how could be that possible ?
What is the take off of
90° short radius
45° short radius
1.5 / .625
i think 8 inch pipe diameter to be ( ) first by 0.625 inch then ( ) it by 25.4 mm = 127 mm= take off of one 45 degree elbow. please check if i am wrong.
Exactly i was doing this in feet which would be 5 in per 45.
Sir ano ung 1.414
Where did you get the 1.414
square root 2
Constant yan.
Wla napo bawas ang gap
Nice dami matututunan sir
your welcome
What is the 1.414 please tell me
Cosecant of 45 (1.414 )
@@Notmex1x 1.414 due to √2
Hindi naba,i minos ang gap boss?
for example 90 degree elbow how found take off
38.1D=TO 90ell
How u got the value 1.414. Please explain
Jahan 45° aur 45° elbow use ho wahan cl se cl measure ko 1.4142 ko zarab dete hain jitna jawab aye ga us mein se 2 elbow ko manfi kar lena aur 6 mm aur gap k liyie manfi kar Lena.jo baki bache ga utna pipe cut karna aur fit kar lena.yad rahe ye farmula siraf 45° elbow k lyie hy.ok bye
try by multiplying with 0.04 sir ji for 90 deg any size of cable tray trunking 50 mm height
Vvv
Where did you get the 1.414 and also what is that
sine 45 deg.
√2 = 1.4142
How did you get the elevation 3500 and 3000
Same question..
They’re random numbers used for demonstration purposes
Yan po elevation ay given sa drawing
Saan Tayo kukoha Ng 1.414
1.414 how to coming
Is a factor for 45 ells. You can use it every time when you have 45*ells
Run x1.414 or offset 1.414 you got the travel
Last one is wrong
Where did the 38.1 come from???
He’s mixing metric & SAE in his calculations; 38.1mm = 1.5”. Therefore the centreline calculation of a 90 degree, long radius elbow is: fitting diameter X 1.5 (8” dia. X 1.5 = 12”) OR. (203.2mm/8”” X 1.5 = 304.8mm/12”.
I’m a Canadian Pipefitter & I use both systems on various job sites but I don’t mix them up like this. It’s always one system or the other, usually SAE but it’s easier to calculate the whole numbers for spool lengths in the metric system as opposed to fractions in the SAE (imperial) system. It can get really screwy if I start mixing & converting.
I hope that this helps.
1,5 x 25,4 = 38.1
For accurate measurement and better solutions try downloading piping fabrication calculator-IPC 99 from google play store.
ha ha not all pipework is done in a mobile network location,, ie oil rigs so sometimes you need to know how to work things out youself
Additional thikness for 8" pipe
He based it on the center of pipe. No thickness needed to be explained. He only show how to compute take off an how to get the pipe spool for 45 degree off set,run and travel.
Where did you get the 15.8? Thanks
38.1
For second 90deg is wrong
Boss ..yun spool center to center 500...tapos yung take off dalawa 608..paano yan....
Mag fabricate ka nalang boss pag hndi pwd.. Kasi meron talagang mang yayari na mag kalapit Lang ang gap. Short 45 deg.
where did u get 15.8?
popop abarico 45digree elbow center is 15.8
This is incorrect
If it is an 8in 45 elbow
The take off is 5in
popop abarico the take off of an 8 in 45 ° elbow is 5 in. Idk where he is getting 15.8 from but that is incorrect
15.8 is the formula for 45 degree elbow. multiply to pipe size or diameter of pipe.then multiply by 2 because there are 2 elbow
the formula is pipesize x 5/8 ..15.8 is converted to metric 25.4. 1 inch, so 25.4 x 5/8 =15.875
Confusing
thank you Mr . Philipino .
Your Welcome!
What is 38.1 in 90 degree take off?
Formula to find Takeoff. ua-cam.com/users/edit?o=U&video_id=9Vs4HoXJ3NQ
Take off of 90 degree equals 38.1 SR
@@Mrjoelaguirre 38.1 is conversion to metric, the formula is 1.5 x pipe dia . conversion from inches to metric is multiply by 25.4 , so the 38.1 is 25.4 x 1.5
@@derekhead8180 thanks sir
두번째 90엘보 틀린거 같네요
길이500보다 피팅길이가 더 크자나요
15.8 what is this
45 degrees elbow take off
Hindi ba kasali ang wilding gap?
we have 3 to 4 mm gap but we have company specification and procedure but this is standard
bcoz the TO is 600 & the length from center to center is 500.
What is it in inches?
12 inches
Oops, my bad, his calculations are in metric. 304.8mm = 12 inches.
radical 2=1,414. 25,4+12,7=38,1
1.414what this one
500mm=19.68in and 8in dia.X1.5=12in (take off). 24 in total take off from 19.68 inches doesn't make sense.
Unclear.. where is that 1.414?
Off set x 1.414= travel- 2 45s centre = end to end travel pipe
How to find out the centre of a 4" 45 elbow,,,,4"" 2" 1" 1/2 = 2 + 1/2 = 21/2 centre of a 4" 45 elbow.
Do the say for all sizes this is the easy way
Brother last one is wrong.
boss good day po, saan nkuha ang 1.414
Pythagorean theorem yan boss. Yang 1.414 ay ang formula panu kuhain ang sukat ng right angle at diagonal measurements ng 45 off set,run at travel. Sa high school Gina gamit na Yan natin. Di lang natin napansin. Theory Yan ni Pythagoras ng Greece.
Keep it simple go and buy a blue book please
Skwala lang gamit ko jan bos mabilis pa
Mas mahaba pa yong dalawang take off kaysa length nang pipe center to center,.
Long radius 90* equal diameter x 1,5 off diameter
Short radius 90* it’s equal diameter
Yes!
yes
Malinyn boss hindi mo binuwasan ng gap 6mm
where you number 1.414
Kamal Hossain what he doesn't explain is that multiplying by 1.414 is a constant for finding your travel of a 45° offset. Now go and divide by .707, same answer
Wrong my dear you calculate 90 degree drawing
Esta mal el segundo de los codos de 90... Te faltó elevación
Welcome
Ang Dame mung bassh pre...
Wla n kasing spool 2
Wala n kasing spool 2nd question dahil negative n
1.414 = sin 45x2=1.414
Where did he get 15.8 for 45
And 38.1 for 90
38.1 is the simplest way to get the take off of long radius elbow 90 degre. Ex. 38.1 multiply by the size of the elbow.
On 45 degree long radius. 15.8 multiply again to the size of the elbow.
That what it is
Para lng yan sa same 45° ang 1.414 formula
707 with welding gap
It's for you to decide how much measure of welding gap you want to put on
sorry i not understand 15.8 and 1.414
i know formula center elbow tg( &÷2)× 38.1×N
and tg (&)= 500÷x
x=500÷tg( 45°)
Same situation where from 1.414
cos & sin45=0.707 not 1.414
👍👍👍👑👑👑👏👏👏
Saan pu na kuha ang 1.414
Gamit yan pag 45° ang gamit
It may used for 45deg.elbow only..or ds is the formula of using for 45deg..
Squareroot po ng 2 ang 1.414
Yan ang constant multiflier for 45 degrees ONLY !Para makuha mo ang travel.
Kuha mo na ?
25.4×.625= 15.875
Kabayan parang mali yng example mo sa 90deg.
bt anyway u r really doing a great job.. thanks for all the valuable videos ...
keep it up.
Thank you!