Page 54 - Industrial Process Plant Construction Estimating and Man Hour Analysis

Process piping Chapter 2 25

2.3 Schedule A—Oil refinery piping

Standard labor estimating units
Facility—oil refinery Large bore piping Small bore piping
Unit of measure Unit of measure
Description Man-hours per unit Man-hours per unit
Handle and install pipe, carbon steel,
welded joint Diameter inch-feet MH/LF
WT<¼0.375 00 0.06 0.15
00
0.406 >¼WT<¼0.500 00 0.07 0.18
00
0.562 >¼WT<¼0.688 00 0.08 0.20
0.718 <¼WT<¼0.938 00 0.11 0.28
00
1.031 <¼WT<¼1.219 00 0.20 0.50
00
00
1.250 <¼WT<¼1.312 00 0.25 0.75
Welding, carbon steel, arc-uphill Diameter inch MH/EA
WT<¼0.375 00 0.45 1.00
0.406 >¼WT<¼0.500 00 0.50 1.15
00
00
0.562 >¼WT<¼0.688 00 0.95 1.90
00
00
0.718 >¼WT<¼0.938 (PWHT) 1.10 2.25
1.031 >¼WT<¼1.218 (PWHT) 1.35 2.60
00
00
1.250 <¼WT<¼1.312 (PWHT) 2.10 4.20
00
00
SOL, TOL, WOL 2 BW 2 BW
Stub in 1.5 BW 1.5 BW
Socket weld Per SW table
PWHT craft support labor 0.45 1.00
Bolt up of flanged joints by weight class Diameter inch MH/EA
150#/300# Bolt up 0.40 1.00
600#/900# Bolt up 0.50 1.20
1500# Bolt up 0.65 1.60
Handle valves by weight class Diameter inch MH/EA
150# and 300# manual valve 0.50 1.00
600# and 900# manual valve 0.52 1.30
Heavier manual valve>¼1500# 1.00 2.00
Control valve and specialty items 2 manual 2 manual