You are required to prepare a cost estimation report to determine the total unit cost for plain concrete given the following information:

1. SPECIFICATIONS/ USAGE:

• Plain concrete (PC) quantity = 2500 m³.
• Propose the concrete mix and based on your proposal, perform the cost estimation.
• The concrete will be used for a warehouse base, the main usage of this warehouse is a construction materials storage location.
• Total duration is 30 days.

2. EQUIPMENT

• Pump

Purchase price (P) of Pump = $420,000

Salvage value (F) Pump = $250,000

Useful life (N) = 2 years

Working hours per year = 1800

Maintenance and repair costs = 110% of annual depreciation

Interest rate (i) = 10%

• Truck mixer

Purchase price (P) of Truck mixer = $300,000

Salvage value (F) Pump = $200,000

Useful life (N) = 2 years

Working hours per year = 1800

Maintenance and repair costs = 90% of annual depreciation

Interest rate (i) = 15%

• Concrete Vibrator

Purchase price (P) of Concrete Vibrator = $5,000

Salvage value (F) Pump = $100

Quantity = 5

Useful life (N) = 2 years

Maintenance and repair costs = 120% of annual depreciation

Interest rate (i) = 2%

• Extra tools\ equipment (Assumed)