This document discusses different types of construction estimates including approximate estimates, detailed estimates, revised estimates, supplementary estimates, repair and maintenance estimates, and renovation estimates. It provides examples of when each type would be used such as for changes to design, additional work added, or repairs needed to structures. Common items included in estimates for RCC and brick masonry structures are also listed. The estimating process involves preparing a checklist of items, calculating quantities, expressing quantities in correct units, and preparing measurement and abstract sheets.

1. • Presented by: Ms. Ashwini A. Chaudhari
• Lecturer, Department of Civil Engineering,
R. C. Patel Polytechnic, Shirpur

2. 1. Approximate Estimate: It gives us an
Approximate amount needed for the project.
2. Detailed Estimate: It gives us a Detailed
amount which is very near to the actual
amount needed for the project.

3. a) Service Unit Method
b) Plinth Area Method
c) Cubical Content Method
d) Typical Bay Method
e) Approximate Quantity Method

4. a) Revised Estimate
b) Supplementary Estimate
c) Revised & Supplementary Estimate
d) Repair & Maintenance Estimate
e) Renovation Estimate

5.  It is a type of detailed estimate which is
prepared if in the project work there is
change in design and planning.
 Also when actual cost of construction
increases by 5 to 10%.
 Even if there are material changes from
original proposal, still Revised estimate is made.

6.  It is a type of detailed estimate which is prepared
when there is additional work in the project.
 E.g. If in a bedroom, attach toilet is not provided
in original estimate & later it is decided to
construct the toilet block, Supplementary Estimate
is necessary.

7.  It is a type of detailed estimate which
is prepared if it is necessary to
combine Revised Estimate &
Supplementary Estimate.

8.  It is a type of detailed estimate which is
prepared whenever it is necessary to repair
and maintain any structure in its working
condition.
 Buildings- White washing, Color washing, Minor
Repairs etc.
 Roads- Patch Work, Repairs of Bridges,
culverts etc.

9.  It is a type of detailed estimate which
is prepared to do the Renovation of
Buildings, Bungalow, Flats etc. after
some years of use.

10. 1. Site Clearance
2. Earthwork in excavation
3. PCC Bed in Foundation
4. RCC in Footing
5. Plinth Beam
6. Column
7. Floor Beams
8. Slab
9. Staircase
10. Plinth Filling
11. BBM for superstructure
12. Flooring
13. Internal Plaster
14. External Plaster
15. Internal Painting
16. External Painting

11. 1. Site Clearance
2. Earthwork in excavation
3. PCC Bed in Foundation
4. UCR Masonry in Foundation
5. DPC in CM (1:3)
6. Brick Masonry in CM (1:6)
7. Plinth Filling
8. Flooring
9. Internal Plaster
10. External Plaster
11. Internal Painting
12. External Painting

12. Item
No.
Description
of Item
No. Length Breadth
Height
or
Depth
Quantity Remarks

13. Item
No.
Description
of Item
Quantity Unit Rate Unit of Rate Amount

14. 1. To prepare checklist of items as per
drawings.
2. Prepare Centre-line plan of the structure.
3. Calculate quantities of items of work.
4. Express all quantities in correct units of
measurements.
5. Prepare Estimate as per Drawings &
Specifications.
6. Prepare Measurement Sheet & Abstract
Sheet.