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Building Estimate
Building Estimate is processed of predicting the probable cost of the project by calculating material quantity and their costing with help of market rates before undertaking any construction project. Here, In this article, we will learn about how to do an Estimation of A Building With Plan.
Detailed Estimation of Building with Plan pdf
The following steps to be followed to do an estimation of building with a plan,
Data Required Preparing Estimate
- Plan, Elevation & section.
- Schedule of the opening of doors and windows.
- Foundation drawing.
- Column & Beam drawings.
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Building Estimation
1) Interpretation of Drawing
Estimation of a Building with Plan
Before you directly start calculating quantity, you must precisely and correctly read the construction drawing.
- Check dimension of each block is provided or not.
- The check Schedule of the opening is there.
- Check specification of work.
- Check the thickness of the wall is same or changes.
- Check Rise and tread dimension of the stair.
- Check type of foundation and its details drawing.
2) Prepare Estimation Sheet
Following is a sample sheet for preparing estimate.
While taking length, width and depth/ height dimension remember that not all dimensions are given in drawing. Some dimensions you need to calculate from drawing also.
3) Calculating Quantity
For example, a first quantity of the estimation sheet is an excavation in the foundation. To find out the dimension of length, width, and depth of excavation from drawing.
Estimation of a Building with Plan
Estimation of a Building with Plan pdf
Keep in mind:
- Excavation depth is calculated from ground level to bottom of PCC work.
- The size of the trench is larger than the size of the footing to provide easy for workers.
Here, the Size of footing is 1 m x 1 m. So, consider a 0.25 m extra margins on both side of the trench.
Length will be = 0.25 + 1 + 0.25 = 1.5 m, and Size becomes 1.5 m x 1.5 m. Depth is given 1.5 m from ground level.
Now, find number of Footing in building = 12 nos. Put this all values in Estimation sheet multiple with each other will gives you quantity of excavation.
In Similar way, you can calculate other quantity like PCC, Footing Concrete; Earth filling, Plinth beam concrete, DPC, Brick Work in Superstructure, RCC Slab Concrete etc.
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Estimation of a Building with Plan
Free Download Building Estimate Format In Excel
Watch Full Video: Building Estimation With Plan
FAQs
Q.1 What do you mean by Building Estimate?
Building estimation is determining the probable cost of buildings before the construction proceeds, in order to achieve success in the project. Building Estimation is also beneficial for passing tenders.
Q.2 How do you estimate a building?
Excel Sheets, Online Valuation tools, FHFA House Price Index Calculator, hiring experts, etc are some of the Estimation Tools. However, if you want the do it manually, it is necessary to simplify the whole estimation methods into small parts and begin grom foundation.
Q.3 How do I calculate building quantities?
Building Quantities can be calculate by choosing one of the following Method;
1. Center Line Method
2. Crossing method
3. Out to out and in to in method
4. Bay method
5. Service unit method
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