Calculate the Total Cost of Asphalt Overlay for Urban Arterial Road
How can we calculate the total cost of asphalt overlay for an urban arterial road?
We have a single-carriageway urban arterial road 6.50 km long that requires an asphalt overlay 60 mm thick. The surfacing on each carriageway is 10.40 m wide. The average compacted density of asphalt is 2480 kg/m³, and the tendered rate for asphalt surfacing is R 45.90 per square metre. What is the total cost of the asphalt overlay for this road?
Calculating the Total Cost of Asphalt Overlay
To calculate the total cost of the asphalt overlay for the given road, we need to follow these steps:
1. Calculate the Area of Each Carriageway:
- The width of each carriageway is 10.40 m.
- The length of the road is 6.50 km, which is equal to 6500 m.
- Multiply the width by the length to find the area of each carriageway: 10.40 m * 6500 m = 67,600 m².
2. Calculate the Total Area for Both Carriageways:
- Since there are two carriageways, multiply the area of each carriageway by 2: 67,600 m² * 2 = 135,200 m².
3. Calculate the Volume of Asphalt Required:
- The thickness of the asphalt overlay is 60 mm, which is equal to 0.06 m.
- Multiply the area by the thickness to find the volume: 135,200 m² * 0.06 m = 8,112 m³.
4. Calculate the Total Cost of the Asphalt:
- The tendered rate for asphalt surfacing is R 45.90 per square metre.
- Multiply the area by the rate to find the total cost: 135,200 m² * R 45.90 = R 6,193,280.
Calculating the total cost of asphalt overlay for a road involves determining the area of each carriageway, calculating the total area for both carriageways, finding the volume of asphalt required, and then multiplying the area by the tendered rate for asphalt surfacing. In this case, for the 6.50 km long single-carriageway urban arterial road, the total cost of the asphalt overlay would amount to R 6,193,280.
Asphalt overlay is a common method used in road construction to improve the surface and durability of roads. By understanding the calculations involved in determining the total cost of an asphalt overlay, road construction projects can be budgeted accurately, ensuring resources are optimized and projects are completed efficiently.