Quick Answer: How do you calculate excavation rate?

How much excavation can be done in a day manually?

Based on my experience using manual labor to dig footers here in New Mexico in FIRM soil I’d estimate a 2-man crew (of hard-working immigrant workers) will dig about 150 l.f. per 10-day. So 20 man-hours / 150 l.f. 150 / 20 / = 7.5 man-hours per 50 l.f.; say 1 man, one 8-hour day can dig 1 cubic meter of footing.

What is the rate analysis?

Definition: In order to determine the rate of a particular item, the factors affecting the rate of that item are studied carefully and then finally a rate is decided for that item. This process of determining the rates of an item is termed as analysis of rates or rate analysis.

How do you calculate backfill and excavation?

How to Calculate Backfill

  1. Calculate the volume of the space to be filled. …
  2. Calculate the cubic yardage of the same trench. …
  3. Next you might need to fill a round hole that is 10 feet in diameter and 5 feet deep. …
  4. Estimate the number of truckloads that will be required to fill these two holes with backfill.

What is mid section formula?

In this formula, the mean depth is to be calculated. First by avergaing the depths of two consecutive sections. From the mean-depth the area of mid-section is to be worked out and volume of arthwork to be compted by multiplying the area of mid-secion by the distance between the two original sections.

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What is Prismoidal formula?

1) Prismoidal Formula:



This formula is based on the assumption that A1 and A2 are the areas at the ends and Am is the area of mid section parallel to ends, L=Length between the ends. From mensuration, volume of a prism having end faces is in parallel planes: V=L/6*(A1+A2+4Am) This is known as prismoidal formula.

How is earthwork cost calculated?

The earthwork cost is calculated by estimating the number of cubic meters of common material and rock which must be moved to construct the road. The earthwork production rate is calculated as the cubic meters per hour which can be excavated and placed divided by the number of cubic meters per km to be excavated.

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