Page 43 - Estimator's Piping Man-Hour Manual 5E

26 Section One-SHOP 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 1.8 1.9 -- 1.8 ;; 1.9 — ­ 2.7
1-1/4 1.9 2.1 1.9 2.1 -- :; 3.1
1-1/2 2.1 2.3 — 2.1 2.3 3.5
2 2.2 2.7 -- -- 2.2 _ _ 2.7 -- -- -- 4.6
2-1/2 2.4 3.3 2.4 3.3 5. 1
3 2.8 3.8 -- -- 2.8 -- 3.8 -- -- 5.7
3- 1/2 3.2 4.3 3.2 4.3 _ -
4 3.5 4.9 -- -- 3.5 -- 4.9 -- 6.1 — 7.5
5 4.4 6.0 -- -- 4.4 .. 6.0 -- 7.5 -- 9.3
4.7 6.5 4.7 6.5 9.5 — 1 12,1
8 5.3 7.5 5.3 5.3 5.3 7.0 7.5 10.2 , . 12.9 15,8 18.2
10 6.0 8.7 6.0 6.0 6.0 8.7 10.7 1 13.9 | 17.9 23.1 27.8
12 6.9 10.0 6.9 6.9 8.4 11.1 14.4 [ 19.9 24.3 29.4 33.2
14 OD 7.9 11.5 7.9 7,9 9.8 13.6 19.2 24.5 29.3 33.0 40.6
16 OD 9.0 12.9 9.0 9.0 12.9 17.1 22.7 30.9 35.1 38.8 46.9
18 OD 9.8 13.8 9.8 12.8 16.2 21.6 25.5 37.4 41.5 45.0 58.7
20 OD 11.0 15.5 11.0 15.5 18.9 27.6 30.0 43.3 47.3 51.6 65.9
24 OD 12.0 16.8 12.0 18.0 23.5 35.3 39.0 55.0 59.0 66.0 77.1

All Nozzles other than 90° should be charged at the man hours shown for 4o nozzles.
Pipe Thickness: Wall thickness of the pipe used for the nozzle determines the man hours that
will apply. For nozzle 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 pre­
heating. The size and wall thickness of header (not the size of the nozzle) determines the
preheating man hours.
Stress Relieving: Stress relieving of welds in carbon steel material 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 Genera] Notes on welding, see pages 20 and 23.