Ownership Cost Calculation - 2 | 13. Estimating Equipment Cost Using Two Methods | Construction Engineering & Management - Vol 1
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Understanding Ownership Costs

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Teacher
Teacher

Today, we will discuss ownership costs, crucial for anyone managing construction equipment. Ownership costs include the initial purchase prices, depreciation, insurance, and much more.

Student 1
Student 1

Can you explain what depreciation is exactly?

Teacher
Teacher

Of course! Depreciation refers to the reduction in value of the asset over time. In our example, we used a dump truck to illustrate this concept. We calculate it as the initial cost minus tire costs divided by useful life.

Student 2
Student 2

What influences the useful life of the equipment?

Teacher
Teacher

Great question! Useful life can be influenced by operational hours, maintenance, and the type of work the equipment undergoes.

Student 3
Student 3

What are some examples of insurance rates or taxes we should consider?

Teacher
Teacher

Typically, insurance might be around 2% and taxes could be about 3% of the average value of the machine. Remember: ITT—Insurance, Taxes, and Tires!

Student 4
Student 4

What does ITT help us remember?

Teacher
Teacher

It’s a simple mnemonic to recall crucial components of ownership costs!

Teacher
Teacher

Let's recap: ownership costs comprise the initial cost, depreciation, insurance, and other factors. Each aspect has repayment impacts over time, significantly affecting our budgeting.

Calculating Costs with Caterpillar Method

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Teacher
Teacher

Let’s dive into the Caterpillar method. We will start by estimating ownership costs based on our previous discussions.

Student 1
Student 1

What example are we using this time?

Teacher
Teacher

We’ll continue with the dump truck! First, can anyone recall how we calculated depreciation?

Student 2
Student 2

It was the initial cost minus tire costs divided by useful life.

Teacher
Teacher

Excellent! Next, do you remember the equation for average annual investment?

Student 3
Student 3

It’s the initial purchase price minus the tire cost times the subsequent terms for years and salvage value.

Teacher
Teacher

Right! Now let’s put it together and see how we calculate total ownership costs. Include depreciation, interest, and insurance.

Student 4
Student 4

How do we find the hourly rates?

Teacher
Teacher

Divide each annual cost by the annual usage of hours. If we use the truck for 1600 hours annually, it gives you the hourly costs.

Teacher
Teacher

In summary, using the Caterpillar method, we calculate total ownership using straightforward arithmetic! Remember, all calculations should reflect actual usage and proper estimations to ensure accuracy.

Peurifoy Method

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Teacher
Teacher

Moving on to the Peurifoy method, it emphasizes certain operational factors that can adjust our estimations.

Student 1
Student 1

What are those factors?

Teacher
Teacher

We consider factors like load conditions and time efficiencies. For example, if our truck operates at only 80% capacity, we need to adjust our calculations accordingly.

Student 2
Student 2

Does this method change the way we look at salvage value?

Teacher
Teacher

Yes! In this context, we would take into account a salvage value of 20% of the initial investment minus tire costs.

Student 3
Student 3

What about the repair costs?

Teacher
Teacher

Those are calculated as a percentage of depreciation; for example, using 30% of a base depreciation cost.

Student 4
Student 4

Do we manage different maintenance costs for tires too?

Teacher
Teacher

Absolutely, typically we would see it as a separate line item at about 15% of their depreciation cost.

Teacher
Teacher

In summary, the Peurifoy method provides a nuanced approach to equipment management costs by considering all operational variables. Let’s remember the integration of operational capacity and time efficiency!

Introduction & Overview

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Quick Overview

This section explores the calculation of ownership costs for equipment, specifically focusing on the Caterpillar and Peurifoy methods.

Standard

In this section, readers learn how to compute ownership and operating costs of construction equipment, using specific examples like a dump truck. Key considerations include depreciation, insurance, interest, taxes, and operational factors which significantly influence total costs.

Detailed

Ownership Cost Calculation

This section delves into the essential methodologies for estimating ownership costs and operating costs for construction equipment, using the example of a dump truck. Two prominent methods highlighted are the Caterpillar approach and the Peurifoy method, along with practical calculations and key factors influencing cost determination.

Key Points Covered:

  1. Ownership Cost Breakdown: Ownership costs incorporate initial purchase price, depreciation, insurance, taxes, interest, and other associated costs.
  2. Specific Example Utilization: A dump truck's costs are detailed, including purchase price, tire costs, operational hours, and fuel consumption rates.
  3. Caterpillar Methodology: The method outlines calculating depreciation (using straight-line approaches) and other costs such as insurance and taxes as a percentage of average equipment value.
  4. Peurifoy Methodology: This method incorporates adjustments for salvage value and specific operational conditions affecting machine efficiency. It emphasizes factors like load and time efficiencies when calculating costs.

This structured analysis not only provides calculation methodologies but also underlines the importance of accurate data sources, such as equipment handbooks, for effective cost estimation in construction projects.

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Understanding Ownership Costs

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So just add up everything the ownership cost all the operating cost and operating wages also you will get the total ownership and the operating cost following the Peurifoy guidelines.

Detailed Explanation

Ownership costs include the total costs associated with owning and operating a piece of equipment. This encompasses not just the actual purchase price but also other costs such as repairs, insurance, and operating wages. To calculate these costs accurately, guidelines such as those from Peurifoy are followed, which provide a systematic way to include all relevant expenses.

Examples & Analogies

Think of this like calculating the total cost of owning a car. You not only consider the vehicle's purchase price but also insurance, fuel, maintenance, and repairs over time.

Dump Truck Example

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So you can see this problem in this problem you can estimate the cost for the dump truck. It is off highway truck, why we call it as off highway? This truck is not permitted on the public highways.

Detailed Explanation

This example highlights a specific type of equipment, the dump truck, which is categorized as an 'off-highway truck.' Such vehicles are designed for operations at project sites and cannot be operated on public roads, affecting their cost and usage characteristics. Understanding these distinctions is critical when estimating ownership costs because they influence operational hours and maintenance needs.

Examples & Analogies

Imagine a construction site where only specific trucks can operate. Just like some trucks can't drive on regular streets, certain project machines are tailored for specific environments.

Initial and Associated Costs

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The initial cost is given so it was purchased with the deliver price of 3 crores. The tire cost of this machine is 11 lakhs. The requirements are according to the type of the machine for which you are going to estimate.

Detailed Explanation

The initial purchase price of the dump truck is 3 crores, with an additional tire cost of 11 lakhs. These costs form the basis for calculating the total ownership cost. When estimating costs, it's important to reference appropriate guidelines and user manuals to ensure that these values are accurate and relevant to the specific equipment.

Examples & Analogies

When buying a laptop, the initial cost includes not just the device but also essential accessories like a charger or a case. Similarly, in equipment ownership, all associated costs must be considered.

Annual Usage and Operational Costs

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The truck is expected to have annual use of 1600 hours. The local cost of the fuel in the particular space is 65 rupees per liter and the operating cost the wages per hour is 200 rupees per hour.

Detailed Explanation

Understanding the expected usage (1600 hours annually) helps in estimating the operational costs associated with the dump truck. Fuel costs and operator wages are recurring expenses that must be factored into the total ownership costs. Fuel price, set at 65 rupees per liter, and operating wages of 200 rupees per hour illustrate how basic operational expenses are calculated in an ownership cost model.

Examples & Analogies

Similar to how a family estimates their yearly fuel usage for a car (e.g., if you drive 1600 miles per year), estimating equipment usage helps predict fuel and operating costs accurately.

Calculating Depreciation

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Now we shall calculate the depreciation first. (𝐼𝑛𝑖𝑡𝑖𝑎𝑙 𝑝𝑟𝑖𝑐𝑒 − 𝑇𝑖𝑟𝑒 𝑐𝑜𝑠𝑡) 𝐷𝑒𝑝𝑟𝑒𝑐𝑖𝑎𝑡𝑖𝑜𝑛 = 𝑈𝑠𝑒𝑓𝑢𝑙 𝑙𝑖𝑓𝑒.

Detailed Explanation

Depreciation represents the loss in value of the equipment over time. In this case, it's calculated by taking the initial purchase price and deducting the tire cost, dividing the result by the effective life span of the machine, 12.5 years. This method provides a systematic way of distributing the initial investment across the equipment's useful life, reflecting its gradual loss of value.

Examples & Analogies

Think of how a new car loses value each year. Similarly, equipment like dump trucks experiences depreciation, which is an essential factor in total ownership cost calculations.

Total Ownership Cost Calculation

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Total hourly ownership cost = 1445 + 780.30 + 195.08 + 292.61 = ₹ 2713.00/hr.

Detailed Explanation

The total hourly ownership cost is derived by adding together the different components: hourly depreciation, interest, insurance, and taxes. This gives a comprehensive view of what it costs to own and operate the equipment on an hourly basis, an important consideration for budgeting and project costing.

Examples & Analogies

When you calculate how much you spend on living independently each month, you must count rent, utilities, groceries, etc. Just like that, project managers must account for all ownership costs to understand the total equipment costs.

Operating Cost Calculation

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Now let us move on to the operating cost estimation... Total hourly operating cost = 1462.50 + 139.23 + 523.81 + 1083.75 = ₹ 3209.29/hr.

Detailed Explanation

Operations costs include fuel costs, filter oil grease costs, tire costs, and repair costs all calculated on an hourly basis. This summation provides a clear picture of the recurring costs involved in running equipment over time, vital for effective resource allocation in projects.

Examples & Analogies

Similar to running a household where you need to account for all monthly expenses (groceries, electricity bills), understanding operating costs helps project managers predict and allocate funds effectively.

Definitions & Key Concepts

Learn essential terms and foundational ideas that form the basis of the topic.

Key Concepts

  • Ownership Cost: The total cost related to owning equipment, including purchase price, depreciation, and other operational costs.

  • Operating Cost: The expenses incurred during the usage of equipment.

  • Depreciation: A systematic reduction in the value of an asset over its useful lifespan.

  • Caterpillar Method: A specific approach for calculating ownership costs based on structured formulas for each cost component.

  • Peurifoy Method: An alternative approach that emphasizes operational efficiencies in calculating ownership costs.

Examples & Real-Life Applications

See how the concepts apply in real-world scenarios to understand their practical implications.

Examples

  • Calculating the ownership cost of a dump truck by breaking down its costs into purchase price, depreciation, and annual hours of usage.

  • Estimating annual depreciation for machinery through the straight-line method based on initial purchase costs minus salvage value.

Memory Aids

Use mnemonics, acronyms, or visual cues to help remember key information more easily.

🎵 Rhymes Time

  • Cost of owning equipment is clarity; depreciation brings us parity.

📖 Fascinating Stories

  • Imagine you buy a dump truck for a big project, working day and night. You track its decline in value over years, ensuring to calculate insurance and taxes on the side.

🧠 Other Memory Gems

  • I.T.T. - Insurance, Taxes, Tires - key factors in ownership that you can’t retire.

🎯 Super Acronyms

DOPI - Depreciation, Operating Costs, Purchase Price, Interest - all factors of ownership cost estimation

Flash Cards

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Glossary of Terms

Review the Definitions for terms.

  • Term: Ownership Cost

    Definition:

    The total cost associated with owning and operating equipment, including purchase price, depreciation, and operational expenses.

  • Term: Operating Costs

    Definition:

    Expenses incurred from the regular use of equipment, such as fuel, warranties, and repairs.

  • Term: Depreciation

    Definition:

    A reduction in the value of an asset over time, often calculated based on the purchase price and useful life.

  • Term: Salvage Value

    Definition:

    The estimated residual value of an asset at the end of its useful life.

  • Term: Average Annual Investment (AAI)

    Definition:

    A method of estimating the average value of an asset over its useful life.

  • Term: Interest Rate

    Definition:

    The percentage charged on borrowed funds or earned on invested funds.

  • Term: Insurance

    Definition:

    A financial safeguard against risks associated with the ownership of equipment.

  • Term: Caterpillar Method

    Definition:

    A systematic approach for calculating ownership costs based on specific formulas for various cost components.

  • Term: Peurifoy Method

    Definition:

    A detailed methodology for estimating equipment costs that incorporates operational efficiencies and capacity factors.