How to calculate the cost of plinth beams for a building?/ Approximate cost calculation of plinth beams.( Part - 1)

 Let us now calculate the cost of the plinth beams as shown below.

By approximate method:

Given data:

Room size = 2.5m. × 3.5m.

PB1 size = 0.3m ×  0.38m.

PB2 size = 0.3m ×  0.45m.

Concrete grade M20.

Now, from the drawing,

  Length of PB1

   = inner breadth of a room 

  =2.5m.

Length of PB2 

= [ inner length of room × (2nos.× breadth of PB1)]

= [ 3.5m. × ( 2nos. × 0.3m.)]

= [3.5m. × 0.6m.]

= 4.1m.

A. Material cost

1. Concrete:

Let us calculate the volume of plinth beams in a table format.

Sl. No.	Item	No.	L	B	D/H	Qty.
1	PB1	2	2.5m.	0.3m.	0.38m.	0.57 cum.
2	PB2	2	4.1m.	0.3m.	0.45m.	1.107 cum.
3	Total volume of the plinth beam = 1.677 cum

 

Note:

 1. The above-illustrated method is to understand the calculation procedure of plinth beam vol. 

Before proceeding further,  Go through the article👇

👀. What will be the cost of M20 grade concrete ?/How to calculate the cost of concrete having a 1:1.5:3 mix ratio?

The material cost of M20 grade concrete = INR 6065.42/ CUM.

( M20 cost is taken from the above-mentioned article.)

The material cost of plinth beam concrete 

= [vol. of concrete in CUM × rate/ CUM]

= [1.677 × 6065.42/-]

= INR 10,171.70/-

2. Steel:

Let us consider 1.75% of steel reinforcement to the total vol. of concrete.

The volume of steel reinforcement 

= [total vol. of concrete × (percentage vol. of steel)]

= [ 1.667 cum × ( 1.75 ÷ 100 )]

= 0.0291 cum.

The total wt. of steel

= [ density of steel in kg/cum. × vol. of steel in cum.]

= [ 7850 kg/cum. × 0.0291 cum.]

= 229 kgs.

The material cost of steel

= [total wt. in kgs. × steel rate/kg.]

= [229 kg. × 50/-]

= INR 11,450/-

The total material cost

 =  cost of [ concrete + steel]

 = INR[ 10,171/- + 11,450/-]

 = INR 21,621/-

B. Labor cost:

The cost of labor will be 20% to 30% of the total material cost.

Let us consider an average rate of 25% for calculation purpose.

The labor cost of a plinth beam

= [ total material cost × ( percentage cost of labor)]

= [21,621/- × ( 25 ÷ 100 )]

= INR 5405/-

Now, let us find out the total cost of the plinth beam in the table format.

Sl. no.	Item.	Description.	Cost in INR.
1.	Material cost
2.	M20 concrete	For PB1 + PB2	10,171.00
3.	Steel	For  PB1 + PB2	11,450.00
4.	Curing	Lump-sum	300.00
5.	Miscellaneous	Lump-sum	200.00
6.	The material cost =		22,121.00
7.	The  Labour cost=		5,405.00
8.	The cost of plinth beam=		27,526.00
9.	Add 10% contractors profit =		2,753.00
10.	The total cost of plinth beams=		30,279.00

 

Note:

1.  This article is to understand the approximate cost calculation procedure of the plinth beam. In no way, the cost will be similar to the plinth beam of all sizes.  

2. The cost of the plinth beam varies depending upon their size, location, concrete grade, %ge of reinforcement, etc.

 Continued, Part -2    👇

❤.  Accurate cost calculation of plinth beam. (Part - 2)

To go through rate analysis & cost-related articles, click here.

Thank you for going through this article❤. Have a good day 😄.

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