A free-standing concrete wall that is 72 ft long x 12 ft high x 1 ft thick is to

Question

A free-standing concrete wall that is 72 ft long x 12 ft high x 1 ft thick is to be built in three equal pours. The following data apply. Exclude overhead and profit. Exclude wall bulkheads Material prices include all taxes and delivery. Include 10% waste on concrete. Labor Carpenter S32.73/hr Laborer Supervisor S35.37/hr Productivity Erect forms Strip forms Place concrete *LH = labor hour 15.0 f/LH 2.2 yd/LH $26.08/hr Crews Ercct and strip Materials Formwork, initial erection 4 carpenters 2 laborers 1 supervisor (working) Concrete, Redi-Mix at site $97.20/yd 3 laborers 1 carpenter l supervisor (working) $2.66M' $0.34/ft reuse Place concrete Reinforcing subcontract 120.00/yd The total cost of the wall is most nearly: (A) $15,331 (B) $19,153 (C) $22,993 (D) $25,665

Explanation / Answer

Given:

Calculating the cost for first pour:

Cost for second and third pourings = 9150 - cost of initial form work + cost for reusing =

Therefore total cost = 9150 + 2*(7739.4) = 24628.8 $

Therefore answer is most nearly option (d)

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