ESTIMATION IN INTERIOR DESIGNING

Definition: Evaluation is a tool for planning and controlling the construction work of any project in terms of quality, time and money.

Estimation: There are two factors involved in construction quality and quantity, these two factors lead to the dominance of the work rate. By calculating the required quantity and quality of the material you can get an estimate.

The quantity can be obtained by research and graphic analysis prepared in relation to the construction of the project.

Quality is governed by the precision of material and performance.

Estimation is a prediction of the potential costs of any project. Before undertaking any project or project it is necessary to know the potential project costs incurred by the estimate. The main measurement is to enable you to know the cost of the work before the start of the work. The actual cost is known only after the completion of the work.

If the estimate is adjusted carefully and appropriately by a person (evaluator) who is knowledgeable and fully aware of the process, then there will be no significant difference between the estimated costs and the actual cost of the project.

The estimate is adjusted by calculating the required costs and calculating the cost at the appropriate prices, to find the estimated cost of the project. Provision of emergency services, 3% to 5% of estimated costs, is made on average to cover mixed costs that do not fall under any of the functional items. The workload is also increased to 1.55 to 2% of the estimated cost. The cost of initial operations and inspections, land costs including acquisition costs, measurement and dressing costs and the cost of other external services need to be provided in estimates without the estimated cost of the various operational items. Provision of departmental expenditure management of 5 to 10% of estimated costs is also made to determine the estimated cost of the entire project.

The process of preparing the measurement is known for the measurement and involves two steps

• Taking out quantities
• Abstracting

Taking Out Quantities (Subtraction): The measurement information for each item of work is calculated according to the form and diagrams and the sub value of each item is calculated in the form of a table called the details of the measurement form as follows:

Item No.	Description or Particulars	No.	Length	Breadth	Height or Depth	Content or Quantity

 

Abstract Estimated Cost: The cost of each item of work is calculated in the form of a table from the amounts already computerized and the total cost is made in the estimated form as shown below

Item No.

Description or Particulars

Quantity

Unit

Rate

Amount

 

Types Of Estimation:

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. Annual Repair or Maintenance Estimate

1. Preliminary Estimate:

Also called Estimated Rate or Intangible Rate or Bad Cost Rate. It is necessary in the study of various aspects of the work to determine the financial situation before the commencement of work. In that income-generating project, the income will be calculated and an initial estimate will be made, and by comparing this figure it can be seen whether the investment in the workplace is valid or not.

2. Plinth Area Estimation:

This is limited. This is repaired on the basis of a plinth building site, a reduced rate from the cost of renovating the same building with the same specification. Plinth area estimates are calculated by finding the plinth area of ​​the building and multiplying the plinth area value. The area of ​​the plinth should be calculated by the area covered by taking the outer size of the building to the ground level. Open spaces and spaces should not be included in this.

3. Cube Rate Estimation:

Cube rating rating. It is prepared on the basis of the content of the building pounds. This is calculated by finding the content length of cubic x air x height and multiplied by the cube level. It is similar to the location of a plinth but is more accurate than the average area of ​​the plinth as calculated by height.

4. Approximmate Quantity Method estimation:

In this method approximately the length of the walls is measured in a running meter and its height is multiplied by the rate of use per meter of the wall. The cost of effective building and interior meters must be calculated first and these running values ​​must be multiplied by the total length of the walls.

5. Detailed Estimation:

Measurement information contains the performance value of each item of work and the operating costs there. The length, width, and height are well calculated and the values ​​of each item are accurately extracted from the diagram and the values ​​of each item are calculated and subtracted.

Item No.	Description or Particulars	No.	Length	Breadth	Height or Depth	Content or Quantity

 

With this chart The size of each item get the details of each item correctly.

Item No.

Description or Particulars

Quantity

Unit

Rate

Amount

 

After finding the right amount there are units that set the value in this chart by using the correct amount of something you can find the value. by adding your financial and other expenses depending on the job requirement the final rate will be available.

6. Revised Estimate:

Accurate estimates are corrected when the initial authorized rate exceeds 5%. Even the cost of work exceeds the administrative penalty rate by more than 10%. Or the deviation from the original proposal attached to the statement showing the variance of each item.

7. Supplimentry Estimate:

Accurate estimates and adjustments are made as additional work is required. This is a new detailed limit of additional work that can be done during workflow or workflow after completing your previous work.

8. Annual Repair or Maintanance Estimate:

It is accurately measured and prepared to keep the building in good condition and in a safe condition. Includes white washing, color washing, painting, minor repairs etc.

9.  Supplementary and revised estimate: 

If the work is left to chance and the estimated cost of the remaining work is less than 95% of the original work, that is less than 95% of the initial approved rate, or where there are asset deviations and changes in design that could result in significant savings, then the initial rate is reviewed by the relevant authority. Additional and revised measurements are prepared and new technical sanctions are obtained for the appropriate authority.

If at any time prior to or during the performance of the first function, it is found that the initial rate is not exceeded, and then the dividing officer authorizes other reported senior officials.