Page 51 - Estimator's Piping Man-Hour Manual 5E

34 Section One-SHOP FABRICATION

All Labor
Carbon Steel Materials
NET MAN HOURS EACH
Nora. Standard Extra SCHEDULE NUMBERS
Pipe Pipe Heavy Pipe XX Hy.
Size & OD Sizes & OD Sizes or
Ins. 3/8" Thick 1/2" Thick 40 60 80 100 120 140 160
1-1/2 0.8 0.9 0.8 -- 0.8 .. -- -- 2.0
_ _
2 1.0 1.1 1.0 -_ 1. 1 _ _ -- -- 3.0
_ _
_ _
2-1/2 1. 1 1.3 1. 1 1.3 3.7
_ _
3 1.3 1.6 1.3 _ _ 1.6 _. 3.9
_ _
3-1/2 1.4 1.8 1.4 — 1.8 -- -- --
4 1.6 2. 1 1.6 .. 2.1 ._ 4.9 .. 5.2
5 2.0 2.5 2.0 .. 2.5 .. 6.5 .. 6.9
_ _
6 2.3 2.9 2.3 2.9 .. 8.1 -- 8.9.
8 3.1 4.0 3.1 -- 4.0 7.5 10.6 12.5 13.2
10 3.9 5.0 3.9 5.0 8.7 10.8 18.1 20.9
12 4.7 6. 1 5.7 6.5 11.0 16.0 24.2 19.5 28.6
14 5.6 7.3 6.8 8.4 12.8 17.7 27.9 26.4 39.2
1.6 6.3 8.2 8.2 10.6 14. 1 19.9 32.1 37.7 49.8
18 7.6 9.6 11.8 13.7 18.5 25.1 36.3 47.5 60,4
20 8 2 10.6 14.2 16.8 22.9 30.3 40.5 57.3 ..
O. i
24 9.0 12.6 16.6 19.9 27.3 35.7 44.2 67.0 .­

Pipe Thickness: Wall thickness of pipe determines the man hours that will apply. For double
extra strong pipe thickness use Schedule 160 man hours.
Construction: End closures as such are shop fabricated closures; orange peel, saddle, or flat
plate type.
Preheating: If. specified or required by Codes, add for this operation. See man hours for pre­
heating.
Stress Relieving: Stress relieving of welds in carbon steel material is required by the A.S. A.
Code of Pressure Piping where the wall thickness is 3/4" or greater.
All sizes of butt welds shown below the ruled lines are 3/4" or greater in wall thickness
and must be stress relieved, if the end closure involves a circumferential weld.
Where stress relieving is required, an extra charge should be made. See man hours for
stress relieving.
Unlisted Sines: Unlisted sizes take the next higher listing.