2. INTRODUCTION
“What is the purpose and necessity of studying this subject?”
This is the first question which arises in mind
The answer lies in the following questions
Has one got enough money to spend on the construction ?
Has one got ample time that one can wait for the completion of the
construction ?
Has one got resources that one can arrange any amount of desired material
to be used in construction ?
Yes
Then the study of this subject is useless.
3. But if the answer is
NO
then the question arises,
“which are the factors necessitating the study of this subject.”
Set amount of fund
Costly labour ( skilled and unskilled)
Difficulty in getting good building
materials, particularly cement
And day to day rising cost of steel,
bricks, timber etc.
4. Also economy and standard of the construction are two important
things required.
.
Standard of
construction can
be achieved by
careful
supervision and
selecting proper
specifications
whereas for
Economy,
planning is a
must
The total
quantity of
various materials
used in
construction, if
known before
hand, can help
the planning
towards
economy.
5. OBJECTIVES
Covers the various aspects of estimating of quantities
of items of works involved
Buildings, water supply works, sanitary works, road
works and irrigation works
Rate analysis
Valuation of properties
Preparation of reports for estimation of various items.
Able to estimate the material quantities, prepare a bill
of quantities, make specifications and prepare tender
documents.
6. GENERAL INTRODUCTION
ESTIMATE
• An estimate for any construction work may be defined as
the Process of calculating the quantities and cost of various
items required in connection with the work
• To prepare an estimate:
Plan, elevation, section, detailed specifications are required
7. Quantity Surveying or Quantity Estimate
This is a complete estimate or list of quantities for all items of works
required to complete the concerned project
8. Purpose of Estimate
To ascertain necessary amount of money required by the
owner to complete the work
To ascertain quantities of materials required for timely
procurement
To calculate the number of workers
To assess the requirement of tools, plants and equipment's
9. To fix up completion period
To draw up the construction schedule
To invite tenders
valuation
10. Types of Estimates
(1) Preliminary or Approximate estimate
(2) Rough cost estimate based on plinth area
(3) Rough cost estimate based on cubic contents
(4) Detailed estimate
(5) Annual repair estimate
(6) Special repair estimate
(7) Revised estimate
(8) Supplementary estimate
