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Rate analysis of excavation in earthwork is the measure of quantity of excavation to be carried out, the cost of equipment, machineries and labors required for the same. The cost of excavation depends on the depth of excavation, type of soil, method of excavation to be carried out and the distance where the excavated soil has to be disposed. The cost of all these are added for unit volume of excavation to get the rate of excavation. The cost of excavation based on depth is generally divided into categories as:- For depth upto 1.5m
- For depth between 1.5m to 3m.
- For depth between 3.m to 4.5m.
- For depth more than 4.5m

**Rate Analysis of Excavation:**

**Following points to be noted before starting rate analysis of soil:**

- Type of soil
- Lead distance and transport for carrying excavated soil
- Depth of excavation
- Method of excavation - manual excavation or mechanical excavation
- Capacity of labor for manual excavation
- Capacity of equipment for mechanical excavation and their cost per unit quantity.
- Water charges if used
- Profit of contractor

^{3}of concrete.

Items |
Units |
Qty. |
Rate |
Amount |

Hydraulic Excavator | Day | 0.04125 | 5000 | 206.25 |

Tractor/Dumper | Day | 0.04125 | 1500 | 61.88 |

Unskilled Labor | Day | 1.20 | 311.2 | 373.44 |

Total |
641.57 |
|||

Water charges @1% total | 6.42 | |||

Contactor Profit @15% | 96.23 | |||

SUM | 744.22 | |||

Gross Amt./CUM up to 1.5m depth |
COST |
74.42 |

^{3}/ day. That means, a hydraulic excavator can excavate 242.4242 m

^{3}of soil in one day. Its cost per day including driver and fuel is Rs. 5000. Then the cost of 10m

^{3}of excavation can be calculated as: No. of days required for 10m

^{3}excavation = 10/242.4242 = 0.04125 days. The cost of hydraulic excavator for 10m

^{3}excavation = 0.04125x5000 = Rs.206.25 Likewise, based on the capacity of other equipment, labors etc., their cost is calculated. Contractors profit is also added to the total cost of labors and machineries. Then grand total gives the rate of excavation per 10m

^{3}of soil excavation. Different mechanical equipment have different capacity per day for excavation work. Their coefficient per m

^{3}or per 10m

^{3}should be considered for calculation.

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