cost estimation

CEM612 Construction Estimating Spring 2017 Quiz #1 Pag

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The Section above is taken from a planned 50’ x 30’ (exterior dimensions) building to be built in Northern Maine. Equipment Available: Dump Truck – 12 cu. yd. max. volume, owned by the company (no cost charges to the project for use) Hand Shovel – owned by the company (no cost charges to the project for use) Loader/Backhoe – available for rent which includes delivery, fuel, and pick up at the jobsite $50.00 / hour or a daily rate of $300.00 / day Production Rates Excavation: 12 cu. yd. / hour (bank) Backfill: 18 cu. yd. / hour (loose) Labor Available and wages: Foreman (always onsite when someone is working): $40.00 / hour Machine Operator: $30.00 / hour Laborer: $10.00 / hour Excavate and Backfill at 2 cu. yd. / hour (loose) Soil Information Available: Onsite soils (not suitable as backfill) Gavel (trucked onsite and dumped adjacent to work) Sw: 20% Sw: 10% Sh: 15% Sh: 10% Disposal Charge: $0/yard (loose) Cost: $12/yard (bank)

CEM612 Construction Estimating Spring 2017 Quiz #1 Pag

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Concrete placing Footing waste: 4% Wall waste: 2% Note: The notch shown in the top of the wall to receive the slab is formed by placing 2-2x6’s in the form.

The construction company pays typical federal taxes, insurance, and fringe benefits: FICA: 6.2% up to $68,400 Med: 1.45% Workers Comp.: 1.5% up to $25,000 of income Fed. Unemployment: 2% up to $25,000 of income State Unemployment: 0.5% up to $35,000 of income Sick/Personal Time: 5 days per year Holidays: 8 days per year Vacation: Foreman – 3 Weeks per year; Operator and Laborer – hourly employee, no vacation There is a strict company policy prohibiting overtime for hourly employees. Canadian Dollar Exchange rates $(C)/$(US)

Day of Excavation 1.05 Day of Concrete Pour 0.95 Day of Backfilling 1.05

Determine

1. The effective hourly wage for each type of employee. 2. Determine the volume of excavation and number of truckloads required to remove it from the

site. 3. Determine the volume of backfill gravel required and truckloads required to deliver it. 4. Determine the cost to rent the backhoe for excavation and backfilling. 5. Determine the cost (excluding supervision) to undertake the excavation and backfilling with

manual labor. 6. Determine the necessary crew size to complete the work in the time undertaken by the

backhoe. 7. Determine the quantity of concrete required in the footing and walls.

Note: Show all work or submit a clear spreadsheet.