Page 116 - Estimators Piping Man Hour Manual

Section Two-FIELD FABRICATION 99

45° WELDED NOZZLES

Labor for Cutting and Welding
Carbon Steel Material

NET MAN HOURS EACH
Standard Extra
Pipe Heavy Pipe SCHEDULE NUMBERS
Size 6 OD Sizes ft OD Sizes
Ins. 3/8 "Thick 1/2" Thick 20 30 40 60 80 100 120 140 160
1 2.8 2.9 ""** 2.8 2.9 -- 4.1
1-1/4 2.9 3.2 —— 2.9 3.2 4.7
1-1/2 3.2 3.6 3.2 «,«. 3.6 * ~ ~ 5.4
2 3.3 4.1 3.3 4.1 ._ 7.1
2-1/2 3.8 5.1 _- 3.8 — 5.1 — 7,9
— —
3 4.4 5.9 4.4 5.9 8.9
3-1/2 4.9 6.4 — -- 4.9 6.4 — — —
— __
__
4 5.5 7.6 .. 5.5 7.6 -- 9.4 11.4
—
5 6.7 9.1 6.7 9.1 -- 11.7 .. 14.4
— — —
8 7.1 10.0 7.1 10.0 14.5 .. 18.4
8 8.6 11.7 8.6 8.6 8.6 11.1 11.7 15.9 20.11 25.1 28.6
10 9.6 13.7 9.6 9.6 9.6 13.7 16.6 21.8 28.1 ! 36.2 43.7
12 10.9 15.7 10.9 10.9 13.0 17.5 22.9 124.2 38.6 45.7 52.2
14 OO 12.4 18.2 12.4 12.4 15.3 21.4 30.1 38.4 45.9 51.6 64.2
16 OD 14.2 20.2 14.2 14.2 20.2 26.8 35.3 48.7 54.8 61.2 74.1
18 OD 15.5 21.6 15.5 20.1 25.5 j 34.3 40.6 59.1 65.7 71.0 92.7
20 OD 17.1 23.7 17.1 22.7 29.8 I 43.3 46.9 68.3 74.9 81.5 104.1
24 OD 18.8 26.6 18.8 31.8 35.5 1 48.0 ________ 86.8 93.4 104.3 121.8
55.0

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 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 45° 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 the 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.
General Notes: For additional notes on welding see page 92.