Limit of economical haul in earthwork?

The limit of economical haul in earthwork is typically determined by factors such as the distance of the haul, the type of material being moved, the availability of equipment and labor, and the cost of fuel. In general, the most economical haul distance for earthwork is typically around 50-100 feet, as longer distances can increase costs significantly due to the need for additional equipment, fuel, and labor. However, this can vary depending on the specific project and site conditions. It is important for contractors to carefully consider these factors and optimize haul distances to ensure that earthwork is done efficiently and cost-effectively.

The limit of economical haul in earthwork is the maximum distance that earth can be hauled at a given cost before it becomes more economical to use a different method of excavation or transportation. This distance is typically determined by the following factors:

- Material type: The type of material being excavated will affect the cost of hauling. For example, rock is more expensive to haul than sand or gravel.
- Haul distance: The longer the haul distance, the higher the cost of hauling.
- Equipment: The type of equipment used to haul the material will also affect the cost. For example, trucks are more expensive to operate than scrapers.
- Labor: The cost of labor will also affect the cost of hauling.
- Fuel: The cost of fuel will also affect the cost of hauling.

The limit of economical haul can be calculated using the following formula:

```
LEH = (C + H - D) / (E - C)
```

Where:

- LEH is the limit of economical haul
- C is the cost of excavation
- H is the cost of hauling per unit distance
- D is the haul distance
- E is the cost of excavation and hauling

The limit of economical haul is a critical factor to consider when planning an earthwork project. By understanding the factors that affect the limit of economical haul, you can make informed decisions about the most cost-effective way to excavate and transport earth.