CONSTRUCTION COST ANALYSIS AND BIDDING

Q1 – If 1,490 compacted cubic yards of in-place soil is required for a project, how many loads of import will be required? The import material has a swell of 14 percent and shrinkage of 95 percent. The trucks can haul 12 loose cubic yards.

Q2 – Determine the amount of excavation needed for the continuous footings shown below. A two-foot working distance is required and the excavation will be sloped 1:1.75 (1.75 vertical feet for every horizontal foot). Also, determine the amount of backfill needed for the continuous footing and foundation in compacted cubic yards.

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Q3 – An asphalt paving crew is used to pave a 500-foot by 300-foot parking lot. The parking lot will be paved in 12-foot-wide strips running the long (500-foot) direction. The machine paves 11 lineal feet of 12-foot-wide parking lot per minute. A single lift of asphalt will be used on the parking lot. After completing a pass, it takes the crew 10 minutes to turn the paving machine around and get ready for the next pass. The crew consists of a foreperson, six operators, and a laborer. Using a system efficiency of 50 minutes per hour, determine the number of labor hours required to place 1 lineal foot of parking lot 12 feet wide.

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