How to Calculate Earthwork Quantity in Road Construction

Introduction

Earthwork calculation is important for estimating excavation and filling work.

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Methods

1. Cross Section Method

• Calculate area of sections
• Multiply by distance

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2. Average End Area Method

$V = \frac{A_1 + A_2}{2} \times L$

Where:

• A₁ = First cross-section area
• A₂ = Second cross-section area
• L = Distance between sections

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Importance

• Cost estimation
• Material planning
• Project control

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Conclusion

Accurate earthwork calculation ensures proper budgeting and execution.