Fundamentals Of Construction Estimating
4th Edition
ISBN: 9781337399395
Author: Pratt, David J.
Publisher: Cengage,
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Question
Chapter 2, Problem 1RQ
To determine
The main objectives of the estimating department in a construction company.
Expert Solution & Answer
Explanation of Solution
Introduction:
Developing an estimateincludes interactions with large number of people and dealing with a vast data. The estimating team will be able to produce efficient estimate by following well organized estimating procedures.
The main objectives of estimating department in a construction company are as follows.
- To prepare construction cost estimates that allow the contractor to choose profitable work by competitive bidding process.
- To check and verify the work which maximizes the accuracy of the estimate.
- To generate the highest volume of the estimating work with the available resources to maximize the productivity.
- To ensure that the project is most likelihood of success.
- To provide a good atmosphere and a cooperative approach to the team within the estimating area that benefits the entire organization.
Conclusion:
Thus, the main objectives of the estimating department in a construction company are described above.
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Example 5.2: Design Example of a Square Foundation for a Colum
Figure A.3a shows a square column foundation with the followin
conditions:
Live load=L=675 kN
Dead load D= 1125 kN
Allowable gross soil-bearing capacity 145 kN/m²
Column size-0.5 m x 0.5 m
-20.68 MN/m²
1,413.7 MN/m²
Let it be required to design the column foundation.
1.25m-D
L-675 AN
D-1125 AN
(a)
Column section-
05 m x 0.5m
Example 5.3: Design Example of a Rectangular Foundation for
Column
This section describes the design of a rectangular foundation to support a column having
dimensions of 0.4 m x 0.4 m in cross section. Other details are as follows:
Dead load D= 290 kN
Live load L= 110 kN
Depth from the ground surface to the top of the foundation = 1.2 m
Allowable gross soil-bearing capacity = 120 kN/m²
Maximum width of foundation = B = 1.5 m
f, = 413.7 MN/m²
f=20.68 MN/m²
Unit weight of soil = y = 17.27 kN/m³
Unit weight of concrete = y₁ = 22.97 kN/m³
General Considerations
For this design, let us assume a foundation thickness of 0.45 m (Figure A.4a). The weight
of foundation/m² = 0.45 y = (0.45) (22.97) = 10.34 kN/m², and the weight of soil above
the foundation/m² = (1.2)y = (1.2) (17.27) = 20.72 kN/m² Hence, the net allowable soil-
bearing capacity Iqata] =120-10.34-20.72 = 88.94 kN/m²
The required area of the foundation = (D+L)/4(all) = (290 + 110)/88.94 =
4.5 m². Hence, the length of the foundation…
Chapter 2 Solutions
Fundamentals Of Construction Estimating
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