Let us consider a column of size 230mm.× 300mm. having 3m. height as shown in the drawing.
Given data:
Column size = 230mm. × 300mm.= 0.23m. × 0.30m.
Height of the column = 3m.
Grade of concrete = M20.
A. Material cost
1. Concrete:
The volume of concrete in the column
= [ L × B × H]
= [0.23m. × 0.30m. × 3m.]
= 0.207 CUM.
Before proceeding further, Go through the articleðŸ‘‡
The material cost of M20 grade concrete = INR 6065.42/ CUM.
( M20 cost is taken from the abovementioned article.)
The material cost of column concrete
= [vol. of concrete in CUM × rate/ CUM]
= [0.207 × 6065.42/]
= INR 1255.54/
2. Steel:
Let us consider the reinforcement in the column as shown in the belowgiven drawing.
Here, we are calculating the cost of steel for the 3m. (3000mm.) height of the column. i.e. from plinth level to the bottom of the slab.
Given data:
Longitudinal bars ðŸ‘‰ 16mm. ∅  4 nos.
Lateral ties ðŸ‘‰ 8mm. ∅  250mm. c/c.
Clear cover ðŸ‘‰ 40mm.
Total no. of lateral ties
=[ {length of the longitudinal bar ÷ stirrup spacing} + 1]
= [{3000mm ÷ 250mm.}+ 1]
= [12 + 1]
= 13 nos.
Before proceeding further, Go through the articleðŸ‘‡
ðŸ‘€. Bar bending schedule ( BBS ) for columns.
Cutting length of a lateral tie = 0.852m.
( Cutting length is taken from the abovementioned article.)
Now, let us prepare the BBS table for the column.
Sl. No. 
Bar 
Dia. In mm. 
Nos. 
Length In m. 
Total length In m. 
Weight Kg/m. 
Total bar wt. In kg. 
1. 
Longitudinal bar 
16 
4 
3.0 
12.0 
1.58 
18.96 
2. 
Lateral ties 
8 
13 
0.852 
11.076 
0.395 
4.375 
3. 
Total weight of bars = 
23.34 

4. 
Add 2% wastage = 
0.47 

5. 
The grand total wt. of rebar's = 
23.81 
The material cost of steel
= [total wt. in kgs. × steel rate/kg.]
= [23.81 kg. × 50/]
= INR 1190.50/
B. Labor cost:
The total labor cost of column = INR 928.32/
The labor cost is taken from my article ðŸ‘‡
ðŸ‘€. How to calculate the labor cost for RCC columns?
Now, let us calculate the total cost of a column in the table format.
Sl. no. 
Item. 
Description. 
Cost in INR. 
1. 
Material cost 


2. 
M20 concrete 
For 3m. column 
1255.54 
3. 
Steel 
For 3m. column 
1190.50 
4. 
Curing 
Lumpsum 
50.00 
5. 
Miscellaneous 
Lumpsum 
100.00 
6. 
The material cost = 
2596.04 

7. 
The Labour cost= 
928.32 

8. 
The cost of column= 
3524.36 

9. 
Add 10% contractors profit = 
352.44 

10. 
The total cost of 3m. height column= 
3876.80 
Note:
1. To get accurate results, insert the ongoing market rate of labor & materials in your country.
2. This article is to understand the column cost calculation procedure. In no way, the cost will be similar to the column of all sizes.
3. The cost of the column varies depending upon their size, location, concrete grade, %ge of reinforcement, etc.
Thank you for going through this article❤. Have a good day ðŸ˜„.
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