Today we are going to discuss the rate analysis of concrete along with an example calculation for M25 Concrete.  Before that, you must understand the steps involved in rate analysis. We have already discussed the rate analysis basics.

## How to do rate analysis for concrete?

To get almost nearby accurate rate analysis, you have to consider the following things,

• Material Estimation
• Labour Estimation
• Power consumption
• Water consumption
• Tools and equipment
• Contingencies

## 1. Estimation of Materials

Assume We need 1 m3 of wet volume concrete of M25 Mix, (Mix Ratio, M25 = 1: 1 : 2)

So Total Parts = 1+1+2 = 4 Parts which gives Dry volume that means before adding water content

Volume of concrete = (1 Cement Part)/4 + (1 Sand Part)/4 + (2 Coarse Aggregate Part)/4

Therefore,

• Volume of Cement = 1/4 x 1.55
• Volume of Sand = 1/4 x 1.55
• Volume of Coarse Aggregate = 2/4 x 1.55
• From the IS Code standard, Assuming the water-cement ratio for M20 is 0.5

The reason for that 1.55 has been already discussed in the concrete ingredients calculation topic.

So the required

• Cement Volume – 0.3875 m3 or 11.16 Bags
• Sand Volume – 0.3875 m3
• Coarse Aggregate – 0.775 m3
• Required Water – 193.75 Litres

We have estimated the material requirement.

## 2. Labour Estimation

As per our Labour Output Thumb Rule estimation. We assume that we need approx manpower in terms of days as below

• Foreman – 0.05
• Mason – 0.3 Day
• Male Coolie – 1 Day
• Female Coolie – 1 Day
• Waterman – 0.1 Day

We had covered the crucial task and we shall add a certain percentage for water, power consumption, etc.,

## Example Rate Analysis

 PARTICULARS UNIT QTY RATE AMOUNT 1:1:2 (1 Cement: 1 coarse sand: 2 graded stone aggregate of 20mm nominal size) including curing Details of the cost of 1m3 of M25 concrete Materials Cement Bags 11.16 350 3906 Sand m3 0.3875 1800 697.5 Coarse Aggregate m3 0.775 1500 1162.5 Manpower Foreman Each 0.05 800 40 Mason Each 0.3 700 210 Male Mazdoor Each 1 500 250 Female Mazdoor Each 1 400 200 Waterman Each 0.2 400 80 Subtotal 6546 Tools & Tackles 1% 65.46 Power Consumption 2% 130.92 Add for sundries & contingencies 3% 196.38 Add for overhead & contractor profit 15% 981.9 Rate  per  Cu.metre 7921

Hope you’ve learned something new today. Happy Learning 🙂

Satheesh is a Civil Engineer who has more than 9+ Years of experience in residential construction. He is the author, editor of Civil Planets