Let us consider modular brick wall masonry as shown in the drawing for calculation purposes.
Given data:
Length of the brick wall = 4m.
Height of the brick wall = 3m.
The thickness of the brick wall = 200mm. = 0.20m.
The total volume of the brick wall masonry
= length × height × thickness
= 4m. × 3m. × 0.20m..
= 2.40 cum.
The total area of brick wall
= length × height
=4m. × 3m.
= 12 sqm.
A. Material calculation:
Read the article " Brick, cement, & sand calculations for modular brick masonry." before proceeding further.
No. of bricks required/ cum. of wall = 500 nos.
No. of Cement bags required/ cum. of wall = 1.261 bags
The volume of sand required/ cum. of wall = 0.2628 cum.
Note :
The requirement of bricks, cement & sand per cum. is taken from the above-mentioned article.
1. No. of bricks required
= [vol. of brick wall × bricks/ cum.]
= [2.4 cum. × 500 nos.]
= 1200 nos.
2. No. of cement bags required
= [vol. of brick wall × cement / cum.]
= [2.4 cum. × 1.261bags]
= 3.0264 bags
3. The volume of sand required
= [vol. of brick wall × sand/ cum.]
= [2.4 cum. × 0.2628 cum.]
= 0.6307 cum.
B. Labor calculation:
The labor rate per cum. of the modular brick masonry ranges from INR 130/- to 210/- depending upon the region.
Let us consider an average rate of INR 170/- per sqm.
The total cost of labor for modular brick masonry
= total area of brick masonry in sqm. × labor rate/ sqm.
= 12 sqm. × 170/-
= INR 2,040/-
Now, let us calculate the total cost of modular brick masonry in table format.
Sl. no. Item. Qty. Rate. in INR. Unit. Cost in INR. 1. Modular brick 1200 7/- Nos. 8,400.00 2. Cement 3.0264 380/- bag 1,150.03 3. Sand 0.6307 2100/- Cum. 1,324.47 4. Curing Lump-sum 200.00 5. Miscellaneous Lump-sum 175.00 6.
The material cost = 11,249.50 7.
Add 5% wastage = 562.48 8.
Total material cost = 11,811.98 9.
Labour cost = 2040.00 10. The total cost of modular brick masonry = 13,851.98
Note: To get accurate results, insert your regional market rate of materials & labor, in the above table.
a. The cost of modular brick wall masonry/sqm.
= [total brick masonry cost ÷ total brick wall area]
= 13,851.98 ÷ 12
= INR 1154.33 /sqm.
b. The cost of modular brick wall masonry/cum.
= [total brick masonry cost ÷ total vol. of the brick wall]
= 13,851.98 ÷ 2.4
= INR 5771.66 /cum.
Thank you for going through this article❤. Have a good day😄.
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