How do you calculate earthwork in excavation?

To calculate the earthwork estimate requires multiplying the area by the difference between the average of two sets of levels. Formula: Volume = Area * Difference between the average of two sets of levels.

How do you calculate earthwork in a filling?

CROSS-SECTION METHOD

The volume between each pair of sections is estimated by multiplying the average cut or fill area of the two sections by the distance between them. Once these volumes have been calculated for each pair of sections the total cut and fill volumes are obtained by adding them all together.

What is the quantity of excavation?

Excavation Calculation

Volume of Excavation =Length×Width×Depth. Where, ft3 is a total volume (cubic feet) and m3 is a cubic meter. length, breadth and depth in feet/inch.

What is the rate of earthwork excavation?

Example of Rate Analysis of Excavation in Earthwork

Sr No. Description Rate
1 Backhoe Excavator ( Per Day Excator 200 Cu.m.) 7000.00
2 Tractor/Dumper 2000.00
B Labour for Dressing
1 Mason For Leveling 700.00

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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Is cut and fill expensive?

Builders say that putting a concrete slab on a cut and fill site is cheap, and it is until you factor in extra costs to solve the drainage problems that occur after the builder has long gone. Putting in drainage after completion of the home is very expensive.

How do you calculate soil filling?

Area of the plot = Length x Width = 40 x 30 =1200 sft. Suppose we need to fill the plot by 3’5” = 3.41 feet. ∴ Depth of the plot = 3.41 feet. Volume of plot to be filled = 1200 x 3.41 = 4092 cft.

How much should I charge for excavation?

A typical residential excavation job runs between $1,437 and $5,285 with an average of $3,266. Though most companies charge anywhere from $40 to $150 an hour, residential jobs receive project bids. Project bids reflect cubic yards of dirt moved, anywhere from $50 to $200 per cubic yard.

How much excavation can be done in a day?

It depends upon the soil type and machine category. For ordinary gravelly soils with JCB ( around 40HP) will excavate around 30-40 Cum per Hour and in sandy soils it is about 35-45 CUm .

How do you calculate topsoil excavation?

To calculate how much topsoil you need, simply measure the dimensions of the area you wish to cover and multiply this by the depth required. Measuring in metres is simplest, as this will give you the volume of topsoil you need in cubic metres. For example: A site has an area of 10m x 15m and needs a coverage of 150mm.

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What are the three methods of excavation?

Types of excavation

  • 3.1 Cut and fill excavation.
  • 3.2 Trench excavation.
  • 3.3 Basement excavation.
  • 3.4 Road excavation.
  • 3.5 Bridge excavation.
  • 3.6 Dredging.
  • 3.7 Over excavation.

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What is earthwork in excavation?

Before the earthwork is started, the whole area where the work is to be done shall be cleared of grass, roots of trees and other organic matter. Site preparation shall consist of clearing grubbing and removal of any and all inappropriate materials.

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.
Special equipment and operation