Page 61 - Industrial Process Plant Construction Estimating and Man Hour Analysis

32 Industrial Process Plant Construction Estimating and Man-Hour Analysis

2.4 Schedule B—Diesel power plant piping

Standard labor estimating units
Facility—diesel power plant Large bore piping Small bore piping
Unit of measure Unit of measure
Description Man-hours per unit Man-hours per unit
Diameter inch-feet MH/LF
Handle and install pipe, carbon steel, welded joint
WT<¼0.375 00 0.05 0.12
0.406 >¼WT<¼0.500 00 0.06 0.15
00
0.562 >¼WT<¼0.688 00 0.07 0.18
00
0.718 <¼WT<¼0.938 00 0.10 0.25
00
00
1.031 <¼WT<¼1.219 00 0.12 0.30
00
1.250 <¼WT<¼1.312 00 0.15 0.35
Welding, carbon steel, arc-downhill
WT<¼0.375 00 0.35 0.80
0.406 >¼WT<¼0.500 00 0.40 1.00
00
0.562 >¼WT<¼0.688 00 0.85 1.90
00
0.718 >¼WT<¼0.938 (PWHT) 1.15 2.40
00
00
1.031 >¼WT<¼1.218 (PWHT) 1.40 2.90
00
00
1.250 <¼WT<¼1.312 (PWHT) 1.50 3.00
00
00
SOL, TOL, WOL 2 BW 0.00
Stub in 1.5 BW 0.00
Socket weld 0.65
PWHT craft support labor 0.45 1.00
Bolt up of flanged joints by weight class
150#/300# Bolt up 0.45 0.90
600#/900# Bolt up 0.55 1.20
1500# Bolt up 0.65 1.60
Handle valves by weight class
150# and 300# manual valve 0.35 0.80
600# and 900# manual valve 0.60 1.30
Heavier manual valve>¼1500# 0.90 1.80