Page 66 - Industrial Process Plant Construction Estimating and Man Hour Analysis

Process piping Chapter 2 37

2.4.5 Field bolt up of flanged joints by weight class
Facility—Diesel power plant

Man-hours per joint
Pressure rating

Pipe size 150#/300# 600#/900# 1500#/2500#
0.5 0.90 1.20 1.60
0.75 0.90 1.20 1.60
1 0.90 1.20 1.60
1.5 0.90 1.20 1.60
2 0.90 1.20 1.60
2.5 1.13 1.38 1.63
3 1.35 1.65 1.95
4 1.80 2.20 2.60
6 2.70 3.30 3.90
8 3.60 4.40 5.20
10 4.50 5.50 6.50
12 5.40 6.60 7.80
14 6.30 7.70 9.10
16 7.20 8.80 10.40
18 8.10 9.90 11.70
20 9.00 11.00 13.00
24 10.80 13.20 15.60
Man-hours per joint to bolt-up valves, expansion joints, flanged fittings, and spools.