Construction Engineering & Management - Vol 2 | 5. Cycle Time of the Bulldozer by Abraham | Learn Smarter
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5. Cycle Time of the Bulldozer

The chapter provides a comprehensive insight into the operational dynamics of bulldozers, particularly focusing on cycle time estimation, productivity assessment, and the impact of various operational factors such as haul distance, speed, and transmission types. It elaborates on how to use performance charts for speed determination and introduces several methods for estimating productivity, including the use of production curves and thumb rules. This foundation offers a vital understanding necessary for effective cost estimation in earthmoving operations.

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Sections

  • 1

    Cycle Time Of The Bulldozer

    This section discusses the cycle time of bulldozers, including its components and factors affecting productivity.

    Learning Practice

  • 1.1

    Fixed Time And Variable Time

    This section discusses the concepts of cycle time in bulldozer operations, distinguishing between fixed and variable time components and their implications on productivity.

    Learning Practice

  • 1.2

    Maneuver Time

    This section explains the concept of maneuver time in bulldozer operations, detailing how it affects cycle time and productivity.

    Learning Practice

  • 1.3

    Effect Of Transmission Type On Cycle Time

    The section discusses how different types of transmission systems in bulldozers affect cycle time, including factors like push time and maneuver time.

    Learning Practice

  • 2

    Estimating Productivity Of The Bulldozer

    This section explains how to estimate the productivity of bulldozers, focusing on cycle times and factors affecting performance.

    Learning Practice

  • 2.1

    Definitions Of Volume In Different States

    This section discusses the significance of understanding volume definitions in different states, particularly in the context of machinery operations like bulldozers.

    Learning Practice

  • 2.2

    Calculating Blade Load And Cycle Time

    This section discusses the concepts of cycle time and blade load for bulldozers, emphasizing their significance in estimating productivity.

    Learning Practice

  • 2.3

    Job Efficiency And Operating Time

    This section discusses the cycle time, push time, backtrack time, maneuver time, and job efficiency of bulldozers, highlighting their roles in estimating productivity.

    Learning Practice

  • 2.4

    Unit Cost Of Production In Earthmoving Operation

    This section explores the cycle time, productivity estimation, and cost analysis involved in earthmoving operations, particularly focusing on bulldozer efficiency.

    Learning Practice

  • 3

    Approaches To Estimate Productivity

    This section discusses various methods to estimate the productivity of earthmoving equipment, particularly bulldozers, focusing on cycle time, blade load, and job efficiency.

    Learning Practice

  • 3.1

    Using Production Curves

    This section discusses the importance of cycle time and productivity estimation for bulldozers using production curves.

    Learning Practice

  • 3.2

    Estimating Using Thumb Rules

    In this section, we learn about estimating bulldozer productivity using cycle times, maneuver times, and thumb rules.

    Learning Practice

  • 4

    Correction Factors In Productivity Estimation

    This section discusses the importance of correction factors in estimating productivity for earthmoving operations, focusing particularly on bulldozers and their cycle times.

    Learning Practice

  • 4.1

    Factors Affecting Productivity

    The section explores various factors that influence the productivity of bulldozers, including cycle time, maneuvering time, and job efficiency.

    Learning Practice

  • 4.2

    Effects Of Terrain On Productivity

    This section explores the impact of terrain on bulldozer productivity, detailing how factors such as cycle time, haul distance, and soil resistance affect overall performance.

    Learning Practice

  • 5

    Example Problem On Productivity Estimation

    This section discusses the estimation of bulldozer productivity by analyzing factors such as cycle time, maneuvering time, and haul distance.

    Learning Practice

  • 5.1

    Details Of The Example Problem

    This section outlines the concepts of cycle time estimation and productivity assessment for bulldozers used in earthmoving operations.

    Learning Practice

  • 5.2

    Utilizing Production Curves For Estimation

    This section outlines the procedures and considerations necessary for estimating bulldozer productivity using production curves, incorporating factors like cycle time, haul distance, and job efficiency.

    Learning Practice

References

10c.pdf

Class Notes

Memorization

What we have learnt

  • The cycle time of a bulldoz...
  • Productivity can be estimat...
  • Job efficiency is a crucial...

Final Test

Revision Tests