"Step-by-Step Guide: How to Calculate Earthwork for Hill Road"?

 

1. "Step-by-Step Guide: How to Calculate Earthwork for Hill Road"

1. "Step-by-Step Guide: How to Calculate Earthwork for Hill Road"

How to calculate earthworks for an uphill road?

"Step by Step Guide: How to Calculate Earthworks for Hill Road"

"Step by Step Guide: How to Calculate Earthworks for Hill Road"

Calculation of earthworks is a basic process in the construction of a road uphill. Hill roads are roads that are built in hilly or mountainous terrain. The process of building an uphill road involves several stages, including surveying, designing and calculating earthworks. Earthwork calculation is the process of calculating the amount of earthwork required to build a road, including excavation, embankment and backfill. In this article, we will discuss in detail the process of calculating earthworks for an uphill road.

Surveying

Geodetic works are the first stage of the construction of a mountain road. It involves measuring the topography of the terrain to determine the route of the road and the amount of earthwork required. Measurements are made using a variety of devices, including total stations, GPS and drones. A surveyor takes terrain elevation measurements at regular intervals, usually 20 meters apart, to create a contour map.

Design

The design phase includes the preparation of a road layout plan and a longitudinal section. A road layout plan shows the alignment of the road, including curves, gradients and gradients. The longitudinal section shows the profile of the road including cuts and fills, the depth of the cut and fill and the cross section. The design takes into account factors such as terrain slope, soil type, traffic volume and environmental impact.

Calculation of earthworks

The earthwork calculation phase involves determining the amount of earthwork required to build the road. Calculation of earthworks is carried out using the following steps:

1. Calculation of Average Formation Level (AFL)

AFL is the level on which the road formation is built. It is calculated as the average of the highest and lowest points of the road. AFL = (highest point + lowest point) / 2

2. Calculation of cross-sectional area

The cross-sectional area is the cross-sectional area of ​​the road. It is calculated by multiplying the width of the roadway by the depth of cut or backfill. Cross-sectional area = width x depth

3. Calculation of the volume of earthworks

Earthworks volume is the amount of soil that needs to be excavated or filled to build a road. The volume of earthworks is calculated as follows:

For cut parts: Volume = cross-sectional area x cut length

For infill sections: Volume = Cross Sectional Area x Infill Length

4. Calculation of total earthworks

The total earthwork is the sum of the volumes of all cut and fill sections. Total earthwork = sum of cut volume + sum of fill volume

5. Calculation of transport distance

The transport distance is the distance between the excavation site and the filling site. To reduce construction costs, it is necessary to minimize the transport distance. The transport distance is calculated according to the following formula:

Transport distance = (distance between excavation and fill) + (vertical distance between excavation and fill)

6. Calculation of costs

The price of earthworks is calculated based on the volume of earthworks and the hauling distance. Costs include excavation, transportation and filling costs. The cost per cubic meter of earthworks varies depending on factors such as soil type, distance and equipment used.

Conclusion

Calculation of earthworks is a crucial step in the construction of a road uphill. It involves determining the amount of earthwork required to build the road, including excavation, embankment and fill. The calculation is based on the topography of the terrain, the design of the road and the transport distance. Accurate earthwork calculation is essential to ensure project success and minimize construction costs.

An example to illustrate the process of calculating earthworks for an uphill road:

Suppose we are tasked with building a road uphill in mountainous terrain with the following specifications:

Route length: 2 km

Road width: 6 meters

Maximum slope: 10%

AFL: 500 meters above sea level

Cross-sectional area of ​​the cut: 18 square meters

Cross-section of filling: 12 square meters

Altitude of excavation site: 600 meters above sea level

Altitude of filling: 400 meters above sea level

Transport distance: 5 km

Cost per cubic meter of earthwork: $50

Using this information, we can perform the following earthwork calculations:

1. Calculation of Average Formation Level (AFL)

AFL = (highest point + lowest point) / 2

AFL = (500 + 400) / 2

AFL = 450 meters above sea level

2. Calculation of cross-sectional area

Cross-sectional area of ​​the cut = width x depth

Cross-sectional area of ​​the cut = 6 x 3

Cross-sectional area of ​​the cut = 18 square meters

Cross-sectional area of ​​filling = width x depth

Cross-sectional area of ​​the filling = 6 x 2

Cross-sectional area of ​​the filling = 12 square meters

3. Calculation of the volume of earthworks

For cut parts: Volume = cross-sectional area x cut length

Section volume = 18 x 2000

Volume of the cut part = 36,000 cubic meters

For infill sections: Volume = Cross Sectional Area x Infill Length

Fill volume = 12 x 2000

Volume of filling section = 24,000 cubic meters

4. Calculation of total earthworks

Total earthwork = sum of cut volume + sum of fill volume

Total Earthwork = 36,000 + 24,000

Total earthwork = 60,000 cubic meters

5. Calculation of transport distance

Transport distance = (distance between excavation and fill) + (vertical distance between excavation and fill)

Shipping distance = (5 x 1000) + (600 - 400)

Transport distance = 5,200 meters

6. Calculation of costs

Excavation cost = total earthwork x transport distance x cost per cubic meter

Excavation cost = $60,000 x 5.2 x $50

Earthwork cost = $15,600,000

Based on these calculations, we can estimate that the total earthwork cost for this hill road project would be approximately $15.6 million. This information can help us plan the project budget and ensure that we have sufficient resources to complete the construction.