## Estimate in interior designing

**Definition:**Assessment is a tool for planning and controlling the construction activity of any project in relation to the quality, time and finances.

**Assessment:**Construction quality and quantity include two things, these two things control the estimate of work. You can make an estimate by calculating the quantity of material required and quality.

Quantities can be found through the study and analysis of
the drawing that has been drawn in relation to the design of the project. Thus
the quantity determines the amount of work involved in the construction and it
helps to find out the number of different materials required as well as the
total labor required for the work.

Quality operates through specifications for materials and
workmanship.

An estimate is a forecast of the potential cost of any
project. Before starting any work or project it is necessary to know the
potential cost of the project which was found by the estimate. The primary
objective of the assessment is to be able to know the cost of the work before
the work begins. The actual cost is revealed only after the work is completed.

If an estimate is carefully and correctly prepared by an
individual (estimator) who is experienced and fully knows the method of work,
there will not be much difference between the estimated cost of the project and
the actual cost.

The estimate is prepared by calculating the quantity
required to obtain the estimated cost of the project and then calculating the
cost at appropriate rates. Provision ranging from 3% to 5% of contingency
expenditure has been made in the estimate to cover miscellaneous expenditure
which does not come under the head of any work. It also added the charged
establishment of the work at 1.55 to 2% of the estimated cost. It is necessary
to provide the cost of preliminary works and surveys, the cost of land including
the cost of acquisition, the cost of ground level and dressing and the cost of
other external services in addition to the estimated cost of various items.
main work. Provision for the supervision of departmental fees of 5 to 10% of the
estimated cost has also been made to get the estimated cost of the entire
project.

The process of preparing an estimate is called an estimate
and consists of two steps.

- Quantification
- Summary

**Quantification:**The details of the measurements of each an object of the work are correctly taken and a plan is made and the shapes and quantities under each object are calculated in a tabular form, named as the measure:

- Item No.
- Description or Description
- No.
- Length
- The width
- Height or depth
- Material or quantity

**Summary of Estimated Cost:**The cost of each item of work is calculated in a tabular form from the previously calculated quantities and worked out as a summary of the total cost estimate as shown below.

- Item No.
- Description or Description
- The quantity
- Unit
- rate
- Amount

### Type of assessment:

- Preliminary estimate
- Plinth area estimate
- Cube rate estimate
- Approximate quantity method estimate
- Detailed estimate
- Revised estimate
- Complement estimate
- Annual repair or maintenance estimate

### 1. Preliminary estimate:

It is also called a rough estimate or abstract estimate or
rough cost estimation. Before starting work, it is necessary to study various
aspects of the work to determine the financial situation. In a project that
gives revenue income, the income will be calculated and a preliminary estimate
is formed, comparing this calculation to see if the investment on the work is
reasonable.

### 2. Plinth Area Estimate:

This is a rough estimate. It is drawn on the basis of the
plinth area of the building, the rate being deducted from the cost of
renovation of buildings with similar characteristics. The plinth area estimate
is calculated by finding the plinth area of the building and multiplying it
by the plinth area rate. Taking the outer dimensions of the building at the
ground level, the plinth area should be calculated for the covered area.
Courtyards and open spaces should not be included.

### 3. Cube Rate Estimate:

The cube rate estimate is a rough estimate. It is prepared
on the basis of the cubic content of the building. It is calculated by
multiplying cubic material x width x-height by length and cubic rate. This is
similar to the plinth area but is more accurate than the plinth area estimate
because the elevation is also calculated.

### 4. Estimating Estimated Quantity Method:

In this method, the approximate total length of the walls is
calculated in running meters and its total length is multiplied by the rate per
running meter. The cost of the running meter for the structure and interior
must be calculated first and the rates of these running meters must be
multiplied by the total length of the walls.

### 5. Detailed estimate:

Estimates of detail include the cost of working and the
quantities of each item of work. The length, width, and height are correctly
extracted and the quantity of each item is correctly extracted from the drawing
and the quantity of each item is calculated and billed.

- Item No.
- description
- No.
- Length
- The width
- The height
- The quantity

Through this chart, the quantity of each item is shown that
each item needs to be properly expanded.

- Item No.
- description
- The quantity
- Unit
- rate
- Amount

After finding the appropriate amount there, the units put
the value in this chart, you can find the amount by applying the appropriate
rate for the particular item. A final estimate will be added by adding your fee
and other charges as per the work requirement.

### 6. Revised Estimate:

This is an accurate estimate and is prepared when the
original accepted estimate is more than 5%. Or the amount of administrative
approval spent on the work exceeds 10%. Or a physical deviation from the
original proposal enclosed by a statement indicating the variance of each item.

### 7. Supplemental Estimate:

This is an accurate estimate and is prepared when additional
work is required. This is a freshly detailed estimate of the additional work
that can happen during the work in progress or further work after completing
your previous work.

### 8. Annual repair or maintenance estimates:

This is an accurate estimate and is designed to maintain the
structure in proper order and in a safe condition. This includes whitewashing,
color washing, painting, minor repair, and more.

### 9. Supplementary and revised estimates:

When work is partially abandoned and the estimated cost of
the remaining work is less than 95% of the original work, it is less than 95%
of the original accepted estimate, or when material deviations and design
changes occur, which may be a substantial saving in the estimate, then The amount of the original estimate is revised by the competent officer. A supplementary and revised estimate is then prepared and fresh technical
approval of the competent authority is obtained.

If at any time before or during the execution of the
original work, it is found that the original estimate is excessive, and then
the Divisional Officer may revise the revised other higher officers are
informed.

###

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