Construction Engineering & Management - Vol 2 | 10. Introduction to Scraper Economics by Abraham | Learn Smarter
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Knowledge
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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Sections

  • 1

    Introduction To Scraper Economics

    This section explains the economics of utilizing scrapers in construction, focusing on how the number of scrapers affects productivity and costs.

    Learning Practice

  • 1.1

    Analysis Of 5 Scrapers

    This section discusses the economic implications of using five scrapers in a production setting, highlighting their impact on efficiency and cost.

    Learning Practice

  • 1.2

    Productivity Estimation

    This section explores the estimation of productivity for scrapers and pushers, emphasizing how the balance between their usage impacts production rates and costs.

    Learning Practice

  • 1.3

    Comparison Of Productivity For 5 And 6 Scrapers

    This section analyzes the productivity differences between using 5 and 6 scrapers in operational tasks, illustrating the implications of scraper numbers on overall efficiency.

    Learning Practice

  • 2

    Estimating Unit Production Costs

    This section discusses how to estimate unit production costs and the factors influencing the number of scrapers and pushers needed for an efficient operation.

    Learning Practice

  • 2.1

    Cost Calculation For 5 Scrapers

    This section discusses the cost and productivity implications of using five scrapers in a construction setting, assessing both productivity and unit costs.

    Learning Practice

  • 2.2

    Cost Calculation For 6 Scrapers

    This section explores the cost calculations associated with using 5 and 6 scrapers, emphasizing productivity and production cost dynamics.

    Learning Practice

  • 2.3

    Decision On Production Cost

    The section discusses the implications of using different numbers of scrapers in production, particularly focusing on the effects on efficiency and production costs.

    Learning Practice

  • 3

    Rimpull And Performance Analysis

    This section analyzes the economic efficiency of using different numbers of scrapers and their impact on production and cost while considering the available rimpull.

    Learning Practice

  • 3.1

    Rimpull Sufficient Analysis

    This section discusses the economics of scraper usage, focusing on the analysis of rimpull and how it affects productivity and cost.

    Learning Practice

  • 3.2

    Calculating Maximum Usable Rimpull

    This section discusses how to calculate the maximum usable rimpull for scrapers based on various factors impacting their performance.

    Learning Practice

  • 3.3

    Correlating Rimpull With Horsepower

    This section explores the relationship between rimpull and horsepower in scrapers, focusing on how to assess productivity based on the number of scrapers used with a pusher.

    Learning Practice

  • 3.4

    Altitude Effects On Rimpull

    This section discusses how variations in altitude can impact the rimpull generated by scrapers, affecting their productivity and operational efficiency.

    Learning Practice

  • 3.5

    Required Rimpull Calculation

    This section discusses how to calculate the required rimpull for scrapers and their impact on productivity depending on their numbers relative to pusher equipment.

    Learning Practice

  • 4

    Guidelines To Enhance Scraper Productivity

    This section discusses strategies to optimize scraper productivity, including recommendations on the number of scrapers, loading practices, and maintaining haul routes.

    Learning Practice

  • 4.1

    Optimal Conditions For Scraper Use

    This section explores the impact of the number of scrapers on overall production efficiency and cost in excavation operations.

    Learning Practice

  • 4.2

    Techniques For Reducing Rolling Resistance

    This section discusses techniques for optimizing the use of scrapers and pushers, emphasizing the balance required for efficient production and rolling resistance reduction.

    Learning Practice

  • 5

    Conclusion

    The conclusion discusses the economics of using scrapers and pushers, emphasizing productivity and cost analysis.

    Learning Practice

  • 5.1

    Summary Of Productivity Estimation

    This section discusses the economics of scraper and pusher combinations for effective productivity estimation.

    Learning Practice

  • 5.2

    Next Steps

    This section discusses the economics of using scrapers and pushers, analyzing productivity based on different numbers of scrapers.

    Learning Practice

References

12 b.pdf

Class Notes

Memorization

What we have learnt

  • The number of scrapers sign...
  • Calculating unit production...
  • Traction coefficients and w...

Final Test

Revision Tests