How Much Does it Cost to Produce 1m³ of PCC 1:2:4 (M15)? – A Detailed Rate Analysis -lceted LCETED INSTITUTE FOR CIVIL ENGINEERS

## Jun 4, 2024

Rate Analysis for PCC 1:2:4 (M15) – Calculate Quantity & Cost

Performing a rate analysis for Plain Cement Concrete (PCC) mix 1:2:4 (M15) involves determining the quantities of materials like cement, sand, and coarse aggregates required for 1 cubic meter of concrete, as well as calculating labor and equipment costs. This comprehensive analysis includes material costs, labor charges, overhead expenses, contractor profit, and equipment or tool costs. This guide will help you understand the steps involved in performing a rate analysis for PCC grade M15.

What is Rate Analysis?

Rate analysis is the summary of all costs involved in performing a particular work or unit work, such as material cost, labor cost, overhead expenses, water charges, and contractor profit. It is essential for estimating and billing purposes by masons, supervisors, contractors, and for tendering use.

Steps for Rate Analysis for 1m³ PCC 1:2:4 (M15) Work

The mix ratio for M15 grade PCC is 1:2:4, where one part is cement, two parts are sand, and four parts are aggregate. Follow these steps to calculate the quantity and cost for 1m³ of PCC.

Step 1: Calculate Dry Volume

• Wet volume of PCC work = 1m³
• Dry volume = Wet volume × 1.54 = 1 × 1.54 = 1.54m³

Step 2: Cement Quantity

• Cement density = 1440 kg/m³
• Cement quantity = (1/7) × 1.54m³ × 1440 kg/m³ = 316.8 kg
• Number of cement bags (1 bag = 50 kg) = 316.8 / 50 = 6.34 bags
• Cost of cement (INR 400 per bag) = 6.34 × 400 = INR 2536

Step 3: Sand Quantity

• Sand quantity = (2/7) × 1.54 × 35.32 = 15.52 CFT
• Cost of sand (INR 60 per CFT) = 15.52 × 60 = INR 931.20

Step 4: Aggregate Quantity

• Aggregate quantity = (4/7) × 1.54 × 35.32 = 31.04 CFT
• Cost of aggregate (INR 60 per CFT) = 31.04 × 60 = INR 1862.40

Step 5: Material Cost

• Total material cost = Cement cost + Sand cost + Aggregate cost
• = 2536 + 931.20 + 1862.40 = INR 5329.60

Step 6: Labor Rate and Charges

• Labor cost for 1m³ of PCC 1:2:4 = INR 850
• Total cost = Material cost + Labor cost = 5329.60 + 850 = INR 6179.60

Step 7: Water Charges

• Water charges (1.5% of material cost) = 1.5% of 5329.60 = INR 79.94
• Total cost = 6179.60 + 79.94 = INR 6259.54

• Overhead expenses (2% of material cost) = 2% of 5329.60 = INR 106.59
• Total cost = 6259.54 + 106.59 = INR 6366.13

Step 9: Cost of Equipment and Tools

• Equipment and tools cost (1.5% of material cost) = 1.5% of 5329.60 = INR 79.94
• Total cost = 6366.13 + 79.94 = INR 6446.07

Step 10: Contractor Profit

• Contractor profit (10% of material cost) = 10% of 5329.60 = INR 532.96
• Total cost = 6446.07 + 532.96 = INR 6979.03

Summary

Below is the detailed breakdown of the costs for 1m³ of PCC 1:2:4 (M15):

 Cost Component Quantity Unit Rate Total Cost (INR) Cement 6.34 bags 400 per bag 2536.00 Sand 15.52 CFT 60 per CFT 931.20 Aggregate 31.04 CFT 60 per CFT 1862.40 Labor 850.00 Water Charges 79.94 Overhead Expenses 106.59 Equipment and Tools 79.94 Contractor Profit 532.96 Total Cost 6979.03

Conclusion

The typical estimate to complete 1m³ of PCC with a mix ratio of 1:2:4 (M15) is approximately INR 6979.03. This includes the cost of materials, labor charges, water charges, overhead expenses, cost of equipment and tools, and contractor profit.

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