What Is Estimate?

Requirement Data for Estimation:

• Drawings (Plans, Sections, etc.).
• Specifications.
• Rates.

#1. Drawings:

#2. Specification:

• General Specifications:
• Detailed Specifications:

#a. General Specifications:

• In general terms, these give the design, efficiency, and class of 1 work and materials to be used in the different sections of the work.
• General requirements help to shape a general concept of the whole building or structure and are helpful in the planning of detailed details.

#b. Detailed Specifications:

• This includes a comprehensive explanation of the different work products that specify the amount and consistency of components, their proportions, the process of planning, workmanship, and work efficiency.
• Detailed descriptions define each item job individually, in detail, and are useful for the various task items to be performed.

#3. Rates:

Types of Estimate:

• Preliminary Estimate | Approximate | Abstract Estimate | Rough Cost Estimate.
• Plinth Area Estimate
• Cube Rate Estimate | Cubical Content Estimate.
• Approximate Quantity Method Estimate.
• Detailed Estimate | Item Rate Estimate.
• Revised Estimate.
• Supplementary Estimate.
• Supplementary And Revised Estimate.
• Annual Repair | Maintenance Estimate.

#1. Preliminary Estimate | Approximate | Abstract Estimate | Rough Cost Estimate:

• Buildings
  • Per Unit Basis
  • Plinth Area Basis
  • Cubic Content Basis
  • Approximate Quantity Method
• Road and Highways
• Irrigation Channels
  • Per Kilometer
  • Area of Land Commanded Ie.,
• Brides and Culverts.
• Sewerage Project and Water Supply Project.
• Overhead Water Tank.

#2. Plinth Area Estimate For Building:

#3. Cube Rate Estimate For Building:

#4. Approximate Quantity Method Estimate:

#5. Detailed Estimate | Item Rate Estimate:

• Measurement Details and Quantity Estimation.
• Abstract of the Estimated Cost.

#a. Measurement Details and Quantity Estimation.

• The calculation descriptions of each work item are accurately extracted from the schedule and the drawings and the amounts under each item are computed or estimated in a tabular form named as the details of measurement form

#b. Abstract of the Estimated Cost.

• The cost of an item of work is estimated from the amounts already calculated in tabular form and the cumulative cost is calculated in the abstract form of the calculation.
• The prices of various work items are taken for completed work items according to the sequence of rates or actual workable rates or analyzed rates.

• Report.
• General specifications.
• Detailed specifications.
• Drawings (plan, elevation, sectional elevations, detailed drawings, site plan or layout plan or index plan ).
• Calculation and designs- designs of foundation, beam, slab, lintel, design of channel in case of irrigation channel, design of thickness of metal crust in case of the road, etc.
• Analysis of rates, if rates are not as per the schedule of rates or for the non-scheduled items.

#6. Revised Estimate:

• If more than 5 percent of the initial authorized forecast is surpassed or is likely to surpass.
• If the spending on a job approaches or is likely to surpass more than 10 percent of the administrative penalty total.
• If there is a material difference from the initial plan, even though the expense of the sanctioned sum will be met.

#7. Supplementary Estimate:

#8. Supplementary And Revised Estimate:

#9. Annual Repair | Maintenance Estimate:

Advantage of Estimate:

• When practice continues, estimates (i.e. schedule, timeline, etc.) become more practical since important problems are found sooner.
• It is more capable of dealing with the (almost inevitable) improvements that usually require the development of software.
• Engineers may get their hands down and begin to work sooner on a project.
• It encourages a company to find the most productive method of applying capital.
• You will set the norm using effective use.
• Operation monitoring is carried out by matching real findings with anticipated outcomes.
• More reliable predictions contribute to easier project execution.
• Converting more bids.
• Projects are done sooner and cheaper.
• Job quick Work easy.
• Customer partnerships achieve a strength of loyalty and continuity as you execute quality projects more efficiently and at reduced costs.
• Be flexible.
• Work collaboratively.

Disadvantage of Estimate:

• This isn't an efficient operation.
• Significant variation from the exact value.
• This is not built on drawings or specifications.
• Extremely customizable re-usability constraints.
• Interpreted inconsistently with each order.
• Chance of not satisfying the budget or schedule.
• Using it is pricey since it requires professionals.
• It is not efficient for certain kinds of overhead costs to be managed.
• In non-manufacturing operations, it is not easy to implement because the relationship between cost and production cannot be calculated.

Types of Estimate

• Preliminary Cost Estimate.
• Plinth Area Cost Estimate.
• Cube Rate Cost Estimate.
• Approximate Quantity Method Cost Estimate.
• Detailed Cost Estimate.
• Revised Cost Estimate.
• Supplementary Cost Estimate.
• Annual Repair Cost Estimate.

Advantage of Estimate.

Disadvantage of Estimate.

• Estimate at Completion.
• Uncertainty, Assumptions, and Inaccuracy.
• Time Loss.
• Misrepresentation of Project Status.

Estimated Building Cost

Types of Cost Estimation

• Factor Estimating.
• Parametric Estimating.
• Equipment Factored Estimating.
• Lang Method.
• Hand Method.

Types of Estimation in Civil Engineering

1. Preliminary Estimate.
2. Plinth Area Estimate.
3. Cube Rate Estimate.
4. Approximate Quantity Method Estimate.
5. Detailed Estimate.
6. Revised Estimate.
7. Supplementary Estimate.
8. Supplementary And Revised Estimate.
9. Annual Repair.

Advantages of Estimation

1. Increased understanding of costs.
2. For funding requirements.
3. To understand material requirements.
4. To aid preconstruction.
5. To know equipment and tooling requirements.
6. To pre-plan labor requirements.

What Are the Different Types of Estimates?

• Top-down estimation.
• Bottom-up estimation.
• Three-point estimation.
• Analogous estimation.
• Parametric estimation.
• Expert judgment.

What Is Estimating in Civil Engineering?

Difference Between Preliminary Estimate and Detailed Estimate

Which Is an Item Rate Estimate?

How Many Types of Estimates Are There?

Benefits of Estimation

• To aid preconstruction.
• To know equipment and tooling requirements.
• To pre-plan labor requirements.
• To understand the cost to benefit ratio.
• To understand rebuild costs for a valuation.

What Is an Estimate in Civil Engineering?

What Is Detailed Estimate in Civil Engineering?

Estimation and Types of Estimation

What Is Estimation in Construction?

Estimate and Its Types

• Estimate
• Point Estimate
• Interval Estimate
• Preliminary Estimate

Various Types of Estimate

• Top-down estimation.
• Bottom-up estimation.
• Three-point estimation.
• Analogous estimation.
• Parametric estimation.
• Expert judgment.

Why Is Estimation Important?

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• Civil Estimate Software
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