Page 246 - Industrial Process Plant Construction Estimating and Man Hour Analysis

224 Industrial Process Plant Construction Estimating and Man-Hour Analysis

(4) Final step is to enter the unit man-hour rates from the tables and the quan-
tities from the “takeoff” into the estimate sheet and calculate the direct craft
man-hours using the unit quantity method (man-hour rate “takeoff”
quantities). The estimate man-hours are compared with the historical
man-hours.

Historical Estimate

Description MH Qty Unit Qty Unit BM IW MW
Fan inlet cowl and fan 0 115.5 0
screens
Fan screen supports 2.00 12.00 EA 15.00 EA 30.0
Fan screen modules 3.00 5.00 EA 6.25 EA 18.8
Mount fan cowl 2.00 12.00 EA 15.00 EA 30.0
segments and top ring
Bolt connection 0.15 36.00 EA 45.00 EA 6.8
Install fan deck plates 2.00 12.00 EA 15.00 EA 30.0

Air-cooled condenser installation man-hours

Facility—solar power plant
(10-cell ACC) Historical Estimate Actual

Description BM IW PF MH/module MH/module
Fan inlet cowl and fan screens 0.0 115.5 0.0 115.5 92.4