Page 124 - Estimators Piping Man Hour Manual

Section Two-FIELD FABRICATION 107

90° COUPLING WELDS AND SOCKET WELDS

Labor for Cutting and Welding
Carbon Steel Material

Pipe 90°— 3000 * 90°— 6000 # SOCKET WELDS
Size Coupling Coupling Sch.40&80 Sch. 100 &
Inches Weld Weld Pipe Heavier Pipe
1/2 "or less 1.6 2.0 0.6 0.6
3/4 1.8 2.2 0.6 0.7

1 2.1 2.5 0.7 0.8
1-1/4 2.4 2.9 0.9 1.0
1-1/2 2.6 3.2 0.9 1.2
2 3.3 4.1 1.0 1.5
2-1/2 3.9 4.8 1.3 1.6
3 4.6 5.6 1.4 2.0

Man hours shown are for welding of coupling to the O.D. of the pipe only.
If couplings are to be welded to the I.D. of the pipe, add 50% to the above man hours. For pipe thickness up to 1 inch,
add an additional 12% for each 1/4 inch or fraction thereof of pipe thickness over 1 inch.
Any coupling welded to pipe heavier than schedule 160 should be man houred as a 6000 pound coupling.
For couplings welded at angles from 45° to less than 90° and couplings attached to fittings increase above man
hours 50%.
For couplings welded at angles less than 45% increase above man hours 75%.
Socket welds do not include cut. See respective man hour table for this charge.