AllRounder.ai
Chapters in this course

Enrol to start learning

Reading is open to everyone. Enrolling is free, and it is what unlocks the audio lessons, practice tests and progress tracking.

Enrol free

14. Productivity of Shovel

This chapter explores the principles of productivity estimation for excavators like shovels and backhoes, focusing on factors like the angle of swing and the height of cut. Correction factors are crucial for adjusting productivity evaluations based on actual working conditions compared to ideal situations, which impacts cycle time and machine efficiency. Practical examples and estimations of shovel and backhoe operations are provided to illustrate these concepts.

Sections

Productivity of Shovel

This section discusses the productivity factors affecting shovels, including truck placement and swing angle.

1 Section Overview

Start current section content and materials

1.1 Angle of Swing and Cycle Time

This section discusses the relationship between the angle of swing of an excavator and its cycle time, emphasizing the impact of truck positioning and height of cut on productivity.

1.2 Adjustment Factors for Height of Cut and Angle of Swing

This section discusses the adjustment factors affecting the productivity of excavation equipment, focusing on the height of cut and angle of swing.

1.3 Truck Spotting Clearance

This section discusses truck spotting clearance and its significance for productivity in excavator operations.

1.4 Haul Unit Exchange Time

This section discusses the importance of haul unit exchange time and its impact on productivity in excavation operations.

1.5 Estimating Productivity

This section discusses the factors affecting the productivity of excavation equipment, focusing on the importance of the angle of swing and height of cut.

1.6 Problem Example on Production Estimation

This section discusses the factors affecting productivity estimation in excavation operations, focusing on the relationship between truck positioning, swing angles, and height of cut.

Backhoes

This section discusses the functionality, productivity factors, and operational parameters of backhoes in the excavation process.

2 Section Overview

Start current section content and materials

2.1 Basic Parts and Operations

This section discusses the operations and factors affecting productivity in excavating and dumping processes.

2.2 Cycle Time Comparison with Front Shovel

This section discusses the impact of truck positioning and swing angles on cycle time and productivity when using front shovels.

2.3 Excavating Below Ground Level

This section discusses key factors affecting the productivity of excavators, including the angle of swing, height of cut, and truck positioning.

2.4 Backhoe and Loader Combination

This section discusses the optimal positioning and operational parameters for backhoe and loader combinations, focusing on factors affecting productivity.

2.5 Versatile Attachments and Applications

This section discusses the importance of positioning trucks and excavators for optimal productivity during excavation operations.

Important Parameters for Backhoe Selection

This section outlines key parameters for selecting backhoes, emphasizing the importance of optimal truck placement, ideal height of cut, swing angle, and adjustment factors for productivity estimation.

3 Section Overview

Start current section content and materials

3.1 Maximum Dumping Height and Digging Reach

This section covers the principles behind maximum dumping height and digging reach for excavators, emphasizing the importance of optimal truck positioning and swing angle for efficient productivity.

3.2 Lifting Capacity and Operating Radius

This section explores the relationship between the lifting capacity of an excavator and its operating radius, emphasizing the importance of truck positioning and adjustment factors for productivity.

3.3 Summary of Key Points

This section discusses the impact of truck positioning and swing angles on excavator productivity in construction.

Learning Objectives

  • Master the fundamentals of 14. Productivity of Shovel

  • Apply learned concepts in practical scenarios

  • Successfully complete all chapter exercises

Key Concepts

Angle of Swing

The horizontal angle between the loading and dumping positions of the bucket, influencing productivity based on its degree.

Correction Factor

A multiplier applied to productivity estimations when actual operational conditions differ from ideal conditions, reflecting changes in height of cut and angle of swing.

Height of Cut

The vertical measurement concerning the depth at which material is being excavated, which affects the effectiveness and efficiency of excavation equipment.

Haul Unit Exchange Time

The time needed for a loaded truck to leave and for a new truck to take its position, impacting overall cycle time and productivity.

Practice Exercises

Total Questions

2

Estimated Time

4 min

Passing Score

70%

Instructions

  • Read each question carefully
  • You can use hints if you need help
  • Complete all questions before submitting
Sign up to take this test

1 more question available

Enrol free