Page 255 - Industrial Process Plant Construction Estimating and Man Hour Analysis

Sample estimates Chapter 11 233

11.9 Comparison method—Air cooled condenser upper structure
a-frame structural

Estimator is using comparison to estimate the erection of A-frame structure in a
solar power plant.

11.9.1 Air cooled condenser installation field erection estimate

Description MH Qty Unit Qty Unit IW
Upper structure A-frame steelwork 294.7
Erect and temporarily bolt structural 2.50 8.52 Ton 8.52 Ton 21.3
steel
Seal plate 2.00 20.00 EA 20.00 EA 40.0
Access door frame 10.00 1.00 EA 1.00 EA 10.0
Cut sheeting to size 0.002 626.00 SF 626.00 SF 1.3
Place sheeting 0.23 420.00 SF 420.00 SF 94.7
Fix sheeting with flashing and caulk 0.05 626.00 SF 626.00 SF 31.3
Tack or screw sheeting 1.00 25.00 EA 25.00 EA 25.0
Install access door 10.00 1.00 EA 1.00 EA 10.0
Pipe hanger with turnbuckle and 10.00 2.00 EA 2.00 EA 20.0
clevis
Install steam saddles 10.00 3.00 EA 3.00 EA 30.0
Bolt connection 0.15 74.00 EA 74.00 EA 11.1

11.9.2 Air cooled condenser installation increased quantities
estimate

Description MH Qty Unit Qty Unit IW
Upper structure A-frame steelwork 325.4
Erect and temporarily bolt structural 2.50 9.80 Ton 9.80 Ton 24.5
steel
Seal plate 2.00 20.00 EA 20.00 EA 40.0
Access door frame 10.00 1.00 EA 1.00 EA 10.0
Cut sheeting to size 0.002 719.90 SF 719.90 SF 1.4
Place sheeting 0.23 483.00 SF 483.00 SF 108.9
Fix sheeting with flashing and caulk 0.05 719.90 SF 719.90 SF 36.0
Tack or screw sheeting 1.00 28.75 EA 28.75 EA 28.8
Install access door 10.00 1.00 EA 1.00 EA 10.0
Pipe hanger with turnbuckle and 10.00 2.30 EA 2.30 EA 23.0
clevis
Install steam saddles 10.00 3.00 EA 3.00 EA 30.0
Bolt connection 0.15 85.10 EA 85.10 EA 12.8