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Hi,
I am Pranav Patil, recently I have faced one interview. They asked me to calculate manpower required for a building RCC work whereas building has 4000 Sqm built up area for each floor. Total floors are 30 Nos. Scheduled completion is 15 Month.
I calculated manpower requirement as follows. Please suggest me if I wrong.
Total Nos. of floors - 30 Nos.
Completion time - 15 Months
Cycle time to complete one floor - 30/15 = 0.5 Months = 15 Days.
Carpenter Required
Shuttering work quantum - 4000 x 1.5 = 6000 Sqm (Multiplied by 1.5 for shuttering for beams)
Days to ready slab shuttering = Cycle time / 2 = 15/2 = 7 Days
Per day productivity required = 6000/7 = 858 Sqm
Carpenter + Carpenter helper required = 858 /7 = 123 Nos. (Productivity = 7 Sqm/day/(C+CH))
Barbender Required
Concrete work qunatum = 4000 x0.15 = 600 Cum (considered 0.15 thk of slab)
Quantum of reinforcement work = 600 x 0.1 = 60 MT
Per day productivity required = 60/7 = 8.57 MT
Barbender + Barbender helper required = 8.57/0.15 = 57 Nos.
Total Manpower required:
Carpenter = 123 Nos.
Carpenter helper = 123 Nos.
Bar bender = 57 Nos.
Barbender Helper = 57 Nos.
Concreting helper = 20 Nos.
Mason forfinishing = 2 Nos.
Total Manpower for RCC work = 382 Nos.
Please correct me if I wrong.
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