Page 49 - Estimator's Piping Man-Hour Manual 5E

32 Section One-SHOP FABRICATION

Labor for Welding
Carbon Steel Material

NET MAN HOURS EACH

Standard Extra
Pipe Heavy Pipe SCHEDULE NUMBERS
Size &OD Sizes & OD Sizes
Ins. 3/8 "Thick 1/2" Thick 20 30 40 60 80 100 120 140 160
2 1.4 1.8 -- 1.4 1.8 -- -- _ _ 2.8
2-1/2 1.6 2.1 1.6 ._ 2.1 3.3
—
3 1.7 2.4 _ _ -- 1.7 2.4 -- -- -- 3.9
3-1/2 2.0 2.8 2.0 -- 2.8
4 2.3 3.3 -- 2.3 -- 3.3 -- 4.7 .. 5.6
—
5 3.0 4.2 -- .. 3.0 -- 4.2 6.6 -- 7.8
—
6 3.6 5.4 -- _. 3.6 -- 5.4 -- 8.9 .. 10.1
8 5.0 7.8 5.0 5.0 -- 7.8 10.1 13.2 15.5 17.0
—
10 6.6 10.5 6.6 6.6 10.5 12.4 15.8 22.6 -- 29.5
—
12 8.7 14.0 -- 8.7 13.2 16.4 21.0 27.9 37.2 -. 42.7
14 OD 11.5 19.4 11.5 11.5 18.7 23.3 30.3 38.1 52.8 _. --
16 OD 16.4 24.8 16.4 16.4 24.8 29.5 33.5 43.4 58.3 -
—
18 OD 20.1 32.6 20.1 30.3 38.1 54.3 _. -- --
— —
20 OD 23.3 36.5 23.3 36.5 42.7 65.1 -- -- -- -- --
24 OD 31.0 50.5 31.0 50.5

Pipe Thickness: The wall thickness of the pipe determines the man hours that will apply. For
swedged ends on double extra strong pipe thickness, use Schedule 160 man hours.
Ends: All man hours are based on ends being furnished either plain or beveled for welding.
Unlisted Sizes: Unlisted sizes take the next higher listing.