How to Compute Takeoff, Spool, Center to Center 90, 45 Degrees Elbow Pipefitter
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- Опубликовано: 19 сен 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?
Thank you for sharing
thank you sir. more power.
thank you
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.
Hey does this work on dairy sanitary pipe Aswell as schedule as sizes are different????
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...
Thank you sir
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
sir what formula do you use?
check again?
what is the 1.414
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
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 😃
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.
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
Is the elbows long radius or short radius?
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
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
thank you Mr . Philipino .
Your Welcome!
where is the gap b/w the pipe and elbow..so must subtract it to 3 mm gap
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...
Where did you get 1414?
How to know the elevation???
sir hinde n po b inaalis ang gap?
Nice dami matututunan sir
your welcome
sory sir where does the number 1.414 come from
Furmula yan
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
Where did you get the 1.414
square root 2
Constant yan.
Where did you get the 1.414 and also what is that
sine 45 deg.
√2 = 1.4142
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
What do you call those dotted line?
Phantom lines, as listed I’m your IPT manual 😁😊
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)
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 😊😁
The difference in between the length, you have to divide 2 and cut each 90*, 54.8mm the center off the 90*
How come the 1.414 please explain. Thank u
Csquared equals 1.414 which is the square root of 2
45°LR is diameter of Pipe or size multiply by 15.875mm..
additional...u did not give what kind of elbow you've given???
Unclear what is this 1.414
.625??? for 45° elbow
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.
Kailan po natin gagamiting ang 1.414???
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
the dimensions for 90° elbow are wrong...
how could be that possible ?
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
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.
What is the take off of
90° short radius
45° short radius
1.5 / .625
Where did you get the 15.8? Thanks
38.1
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
where did get 1.414 and 15.8
you can use 1.414 for 45 deg. and 15.8 takeoff 45 deg. elbow
What is the 1.414 please tell me
Cosecant of 45 (1.414 )
@@Notmex1x 1.414 due to √2
Anung size po nang 45degree na pittings
Sir ano ung 1.414
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
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
What is 38.1 in 90 degree take off?
Formula to find Takeoff. ruclips.net/user/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
Ang Dame mung bassh pre...
Wla n kasing spool 2
Wala n kasing spool 2nd question dahil negative n
Wla napo bawas ang gap
Welcome
👍👍👍👑👑👑👏👏👏
Saan Tayo kukoha Ng 1.414
Hindi naba,i minos ang gap boss?
we cant put two 90 elbows in 500mm distance
What is it in inches?
12 inches
Oops, my bad, his calculations are in metric. 304.8mm = 12 inches.
Supr nis aber see
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.
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.
for example 90 degree elbow how found take off
38.1D=TO 90ell
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
두번째 90엘보 틀린거 같네요
길이500보다 피팅길이가 더 크자나요
Second one cannot be.. should add more length to elv.
15.8 what is this
45 degrees elbow take off
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
bt anyway u r really doing a great job.. thanks for all the valuable videos ...
keep it up.
Thank you!
Hindi ba kasali ang wilding gap?
we have 3 to 4 mm gap but we have company specification and procedure but this is standard
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.
radical 2=1,414. 25,4+12,7=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
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 ?
Last one is wrong
1.414what this one
Keep it simple go and buy a blue book please
Skwala lang gamit ko jan bos mabilis pa
500mm=19.68in and 8in dia.X1.5=12in (take off). 24 in total take off from 19.68 inches doesn't make sense.
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
Mas mahaba pa yong dalawang take off kaysa length nang pipe center to center,.
Confusing
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
For second 90deg is wrong
Can you please explain 15.8 and 1.414? Nakukuha yun iba pero di ko lang maintindihan 15.8 tsaka 1.414 kung saan mo nakuha. thanks..
for 45 deg el. 5/8 or 0.625"x25.4mm= 15.875mm ; travel=sqroot of runsqrd(1)+sqroot of setsqrd(1)=1.414
Teemo can you pls advise where did you take 0.625?
Jason Generoso 15.8 mm kung kukunin ang take off ng 45 degree. multiply by pipe diameter multiply by 2 elbow then ibabawas mo na sa center of elbow. ang 1.414 nmn ay ang squareroot
H
1÷sin(45)=1.414
Sip ok
Brother last one is wrong.
Wrong my dear you calculate 90 degree drawing
Para lng yan sa same 45° ang 1.414 formula
Esta mal el segundo de los codos de 90... Te faltó elevación
anu un..500 ung dia nya center to center ng 90deg..8inch takeoff ng 2x is 608..nigative ata spool mu boss
Makinig kasi ng maayos😂😂 distance Yung 500. Difference elevation ng center ng pipe.sayang lang load mo at oras d mo din nman pala naintindihan😂😂
Wrong especially the second one doesn't even make sense. The length of the pipe to connect the two 90s is going to be less than the center to Center measurement. 109.6 seems a little short. I mean it's not going to be 1/5 of 500,
Ano yung 500? 700? 1.414? Anong metric o measurement ginagamit ikaw lang nakakaalam boss
Para sa kaalaman mong kapos. Yung 1.414 ay ang pag kuha nga right angle. Or diagonal measure pag naka offset ng 45 degree. Pythagorean theorem yan. Kung dumaan ka ng geometry at algebra . Malamang Maalala mo Yan. 😂😂😂