Page 113 - Estimators Piping Man Hour Manual

96 Section Two-FIELD FABRICATION

90° WELDED NOZZLES
Labor for Cutting and 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
1 2.1 2.2 2 1 2 2 3.1
1-1/4 2.2 2.4 .. .. 2.2 .. 2.4 „ .. 3.6
1-1/2 2.4 2.6 -- - 2.4 .. 2.6 — - •- 4.0'
2 2.5 3.1 .. .. 2.5 _, 3.1 .. „ 5.3
2-1/2 2.8 3.8 j - -- 2.8 -- 3.8 — -- -- -- 5.9
3 3.2 4.4 „ .. 3.2 .. 4.4 ., .. „ 6.6
3-1/2 3.7 4.9 -- -- 3.7 - 4.9 -- -- -
4 4.0 5.6 -- -- 4.0 -- 5.6 .. 7.0 - 8.6

5 5.1 6.9 -- -- 5.1 -- 6.9 -- 8.6 - 10.7
6 5.4 7.5 5.4 7.5 10.9 13.9
8 6.3 8.9 6.3 6.3 6.3 8.3 8.9 12.0 15.2 18.6 21.5
10 7.1 10.3 7.1 7.1 7.1 10.3 12.6 16.4 21.1 27.3 32.8
12 8.1 11.8 8.1 8.1 9.9 13.1 17.0 I 23.5 28.7 34.7 39.2
:
HOD 9.3 13.6 9.3 9.3 11.6 16.0 22.7 28.9 34.6 38.9 47.9
16 OD 10.6 15.2 10.6 10.6 15.2 20.2 26.8 36.5 41.4 45.7 55.3
18 OD 11.6 16.3 11.6 15.1 19.1 25.4 30.1 44.1 49.0 53.0 69.2
20 OD 13.0 18.3 13.0 18.3 22.3 32.6 35.4 51.0 55.9 60.8 77.7
24 OD 14.2 19.8 14.2 21.2 27.7 41.7 46.0 64.8 69.7 77.8 90.9
All nozzles other than 90 ° should be charged at the man hours shown for 45" nozzles,
Pipe Thickness: Wall thickness of the pipe used for the nozzle determines the man hours that will apply. For
nozzles of double extra strong pipe thickness, use schedule 160 man hours.
Reinforcement: Man hours given above are for plain welded nozzles only. For use of gusset plates, etc., as stiffeners
not for reinforcement, add 25% to the net man hours shown above. If reinforcement is required and
produced by building up the nozzle weld, or by the use of reinforcing rings or saddles as specified use man
hours for 90° reinforced nozzles.
Preheating: If specified or required by codes, add for this operation. See man hours for preheating. The size and wall
thickness of the header (not the size of the nozzle) determines the preheating man hours.
Stress Relieving: Stress relieving of welds in carbon steel materials is required by the A.S.A. code for pressure
piping, where the wall thickness is 3/4" or greater. The size and wall thickness of the header determines the
man hours to be used for stress relieving.
All pipe sizes shown below the ruled line are 3/4" or greater in wall thickness and must be stress relieved.
Where stress relieving is required an extra charge should be made. See man hours for stress relieving.
For General Notes on welding, see page 92.