A 10-in thick, 26-ft wide concrete pavement is to be placed with a slipform paver using 8-cy batches mixed at a central-mix plant. Each batch is mixed for an average of 1.9 min, and the plant is 75% efficient. Plant production matches paver production. Paver production is 85% efficient. Truck cycle time is 50 min. Hourly rates: Equipment Labor Paver, $210 Foreman, $52 Texture Bar, $45 3 Operators, $46 each Tine Bar, $45 9 Laborers, $39 each Water Truck, $65 2 Finishers, $43 each 2 Pickups, $20 each Truck drivers, $35 each Haul Truck, $65 each Concrete materials cost $65.50/cy, batching cost is $18.65/cy, and incidentals cost $8.32/cy. Overhead and profit is 34% of the previous costs. Round up and add an additional truck to balanced number. Find (a) number of trucks, (b) paver speed, (c) $/cy cost, and (d) $/sy cost.
A 10-in thick, 26-ft wide concrete pavement is to be placed with a slipform paver using 8-cy batches mixed at a central-mix plant. Each batch is mixed for an average of 1.9 min, and the plant is 75% efficient.
Plant production matches paver production. Paver production is 85% efficient. Truck cycle time is 50 min. Hourly rates:
Equipment Labor
Paver, $210 Foreman, $52
Texture Bar, $45 3 Operators, $46 each
Tine Bar, $45 9 Laborers, $39 each
Water Truck, $65 2 Finishers, $43 each
2 Pickups, $20 each Truck drivers, $35 each
Haul Truck, $65 each
Concrete materials cost $65.50/cy, batching cost is $18.65/cy, and incidentals cost $8.32/cy. Overhead and profit is 34% of the previous costs. Round up and add an additional truck to balanced number.
Find (a) number of trucks, (b) paver speed, (c) $/cy cost, and (d) $/sy cost.
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