Earth Moving Equipment Overview

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Questions and Answers

What is the primary function of an excavator in construction?

  • To create a flat surface for paving
  • To demolish old structures
  • To handle material using hooks
  • To move large objects and excavate (correct)

Which of the following is NOT a purpose for which excavators are commonly used?

  • Digging trenches and foundations
  • Transporting heavy loads over long distances (correct)
  • General landscaping and grading
  • Mining activities

How is a grader primarily utilized in road construction?

  • To demolish existing pavement
  • To lift and place construction materials
  • To excavate materials for deeper laying
  • To create a flat surface for asphalt placement (correct)

Which characteristic differentiates a grader from other construction equipment?

<p>It includes a long blade to create a flat surface (C)</p> Signup and view all the answers

Which type of equipment listed is classified under 'earth moving equipment'?

<p>Excavator (B)</p> Signup and view all the answers

What is a key advantage of loaders in construction?

<p>Lower maintenance cost (B)</p> Signup and view all the answers

Which of the following correctly describes a skid loader?

<p>A small rigid frame machine powered by an engine with lift arms (B)</p> Signup and view all the answers

How does a crawler loader differ from a traditional wheel loader?

<p>It must be designed with a specific purpose for stability (C)</p> Signup and view all the answers

What is the primary function of a backhoe in construction?

<p>To excavate earth with a digging bucket (D)</p> Signup and view all the answers

In addition to loading materials into trucks, which of the following is also a common use for loaders?

<p>Managing waste and rubble clearance (C)</p> Signup and view all the answers

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Study Notes

Earth Moving Equipment

  • Excavators are used to move large objects: digging trenches, demolition, material handling, grading/landscaping, brush cutting, forestry work, pipe placement and mining.
  • Graders are used to create a flat surface: road construction, setting foundation pads for buildings.
  • Loaders are used to load material into or onto other machinery: demolition waste, gravel, rock, and plywood.
  • Skid loaders are small machines with lift arms that attach to various tools: they are used for construction projects.
  • Crawler loaders combine the stability of crawler tractors with the abilities of a wheel loader: they have the strength for heavy excavating.
  • Backhoes are used for digging: they consist of a digging bucket on the end of an articulated arm.
  • Bulldozers are used to push large amounts of materials: they can also loosen compacted materials with a ripper.
  • Trenchers dig trenches for pipes: they come in two types - ladder trenchers and wheel trenchers.
  • Scrapers are used in mining, construction and agriculture for moving materials: they have a hopper that is raised and closed with a blade.

Construction Vehicles

  • Tippers are used in quarrying and construction for transporting bulk loads: they are known for their maneuverability, performance, and endurance.
  • Dump trucks are used to transport bulk material: they consist of a large box like body with 4 wheels.
  • Trailers are used to transport goods and materials: they are used in construction and other related fields.
  • Tank trucks or road tankers are used to carry liquefied loads, dry bulk cargo, or gases on roads: they are similar to railroad tank cars.

Material Handling Equipment

  • Cranes are used to lift and transport heavy materials: they are used in the transport industry for loading and unloading, in manufacturing industries for mounting machinery and in the construction industry.
  • Conveyors are used to move materials from one location to another: they are especially useful for transporting heavy or bulky materials.
  • Hoists are used to raise or lower loads: they can be operated by hand, electrically or pneumatically.
  • Forklifts are used to lift and transport materials: they are available in many variations and load capacities.

Construction Equipment

  • Concrete mixers combine cement, aggregates and water to form concrete: they use a rotating drum for mixing.
  • Compactors are used to compact materials: there are three types - plate compactors, jumping jack compactors and road rollers.
  • Pavers are used to lay asphalt: they are fed by dump trucks.

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