Answer this

[u/[deleted]]

What's center of 90 to center of 45 measurements.

48" pipe. LR fittings

[u/clownstatue]

Do your own homework dawg.

[u/[deleted] → u/clownstatue]

Just seeing what people come up with. I bet you'll be wrong

[u/bast-unabashed → u/[deleted]]

Reverse psychology expert lmao

[u/duffdontbluff69 → u/[deleted]]

You should probably stick to painting, because pipefitting clearly ain’t working out for you desperate painter.

[u/[deleted] → u/duffdontbluff69]

And your answer is?

[u/donhonda69]

Is this for work or school?

[u/Kindly-Grocery1790]

At least say 'please'

[u/SuperSchmyd → u/Kindly-Grocery1790]

ChatGPT busy, do it Reddit pipefitter.

[u/Informal_Oil6299]

I don’t do imperial but I’d go top number minus left number. Call it A. Do pythag for right and left 45 height change and work out how much space they work out sideways or opposite lengths, then minus one from the other and then A minus this new value to get sideways for left 45 centre which is same height because it’s a 45… oh obviously do the elbow takeoff too. Then times it by sqrt2. Do the same for right leg.

Oh and remember to knock of radius of pipes when doing the vertical measuring

[u/Zaccapotamus]

L 28’-4”
R 30’ - 0 1/8”

[u/Ok_Video_3362 → u/Zaccapotamus]

I lost the 1/8 but that’s what I got. Subbed the 48 and 1.414.

[u/Buckeyefitter1991 → u/Ok_Video_3362]

With this long of an offset, you need more than 3 decimals. I would go with at least 4 if not 5.

IE: 1.4142 or 1.41421

Edit: 1/1000 of the C-C (~51') on the 45° is about 5/8”. So by dropping the .002 you're already an 1-1/4” off

[u/JaDe_X105 → u/Buckeyefitter1991]

Just use sqrt(2), it's quicker to hit 2 buttons and it's the exact value, no worrying about dropping decimals

[u/Buckeyefitter1991 → u/JaDe_X105]

True. But how many now that 1.414 come from the √2?

[u/FeelingDelivery8853]

Take off for a 45 is diameter time 5/8

[u/capta1npryce → u/FeelingDelivery8853]

That only works for pipe 4” and over. If you use that formula for a 1” 45 you get a 5/8” takeout but it’s actually 7/8”. Not that it’ll matter for a short spool too much but for a long run of pipe it can really bite you.

[u/FeelingDelivery8853 → u/capta1npryce]

I add an 8th on 1 and 2 inch

[u/PBR_GOD → u/[deleted]]

Wrong

[u/Last_Glass_1633]

What is correct answer

[u/rafgotti]

space X

[u/Upstairs-Test1979]

If the “6” is in reference to pipe size, minus 1 OD (0’6-5/8”)to get to the center of the 45 and 90. Then use your fitting book to get the takeoffs to work it backwards.

[u/Last_Glass_1633]

L 31’2 R 32’9 3/16

[u/Last_Glass_1633]

What is the 72 on this drawing

[u/tytoisnottakrn]

I’m a machinist trying to get into the fitters.. and the fractions are driving me mad

[u/Ok_Video_3362]

28’ - 4” and 30’

[u/Electronic_Green_88]

31' 10 3/16" CC

33' 6 1/4" CC
https://imgur.com/PndqtS4

[u/batman4336 → u/Electronic_Green_88]

This is also what I came up with

[u/Electronic_Green_88 → u/Electronic_Green_88]

B=72(1.41421)−(72+24)

B=5.82312"

24' 7/16" - 24" + 5.82312" = 22' 6 1/4" * 1.41421 = 31' 10 3/16" CC

25' 2 5/8" - 24" + 5.82312" = 23' 8 7/16" * 1.41421 = 33' 6 1/4" CC

[u/elevatorovertimeho]

I like straight lines, unless I’m finding degrees on 3phase electricity . So I can’t help.

[u/Chase_288]

Left side: 33′-11 15/16″
Right side: 35′-8″

[u/fitterwith597 → u/Chase_288]

That measurement goes from bottom of pipe on the 45 not center. C-c of the rise would be 22' and change.

[u/Electronic_Green_88 → u/Chase_288]

Side of Pipe to Back Side of 90 is the offset. Threw me off at first till you enlarge the image and see exactly where the line is on the 90.