10. Introduction to Scraper Economics
The chapter focuses on the economics of scraper operations, emphasizing how the number of scrapers affects productivity. It delves into calculating productivity based on both scrapers and pushers, illustrating the balance needed to maximize efficiency while minimizing costs. The findings highlight the importance of choosing the right combination of equipment to meet project deadlines effectively while controlling production expenses.
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What we have learnt
- The number of scrapers significantly influences production efficiency.
- Calculating unit production costs is essential in equipment selection.
- Traction coefficients and weight distribution affect rimpull and operational effectiveness.
Key Concepts
- -- Scraper Productivity
- The output of scrapers measured in bank cubic meters per hour, influenced by the number of scrapers and their efficiency.
- -- Unit Production Cost
- The cost associated with producing one bank cubic meter, calculated based on the hourly costs of equipment and productivity.
- -- Rimpull
- The tractive force available from the equipment to pull loads, influenced by coefficient of traction and weight on powered wheels.
- -- Cycle Time
- The total time taken by scrapers and pushers to complete a loading and hauling task, critical for optimizing productivity.
- -- Coefficient of Traction
- A measure of the grip between the wheels and the surface, essential for effective power transfer from engine to ground.
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