Fundamentals Of Construction Estimating
4th Edition
ISBN: 9781337399395
Author: Pratt, David J.
Publisher: Cengage,
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Chapter 11, Problem 9RQ
Calculate the cost per cubic yard to place concrete using each of the alternatives described. The work in both cases consists of placing 140 cubic yards of concrete in footings.
a. Using a crane and bucket at a price of $225 per hour, including an operator, with a crew consisting of 6 laborers, a cement finisher, and a foreman. The concrete will be placed in 7 hours using this setup, and transportation of the crane costs $390.
b. Using a concrete pump at a price of $295 per hour, including an operator and a crew consisting of 5 laborers, a cement finisher, and a foreman. With this setup, concrete is placed in 6 hours and transportation of the pump costs $290.
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Calculate total cost per cubic yard of concrete, given the following:
Concrete materials and batching costs = $70/cy
Trucking = $6.00/cy
Paving equipment = $340.00/hr
-
Paving labor = $500.00/hr
Paver production = 120 cy/hr
Incidentals
$4.00/cy
Overhead and profit = 20% of direct costs
1.87.0
=
O2.106.8
O 3.104.4
4.99.6
Estimate the total amount of cost for concrete works (class “B”) based from the following given:
10-pcs of F1 (1.2m x 1.2m x 0.3 m)
10-pcs of C1 (0.3 m x 0.3 m x 4.1 m)
Floor area of 100mm thk slab-on-grade = 53 sq.m
The cost of cement (40kg per bag) = 210 per bag.
The cost of sand is 710 per cubic meter.
The cost of gravel is 1900 per cubic meter.
Chapter 11 Solutions
Fundamentals Of Construction Estimating
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