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Questions and Answers
What is the primary function of a hydraulic clamshell?
What is the primary function of a hydraulic clamshell?
- Excavation of foundation pits (correct)
- Transporting materials over distances
- Compacting materials
- Pushing and digging soil
Which piece of equipment is best suited for leveling and finishing grade on construction projects?
Which piece of equipment is best suited for leveling and finishing grade on construction projects?
- Dumper
- Dozer
- Scaper
- Grader (correct)
What is the main use of a roller compactor?
What is the main use of a roller compactor?
- Transporting large amounts of materials
- Cutting and collecting spoil
- Compacting earth and materials (correct)
- Excavating foundation pits
Which equipment is primarily used for cutting, collecting, and moving large spoil quantities?
Which equipment is primarily used for cutting, collecting, and moving large spoil quantities?
What selection criterion considers the weather conditions before equipment choice?
What selection criterion considers the weather conditions before equipment choice?
What role do dozers mainly serve at a construction site?
What role do dozers mainly serve at a construction site?
For what condition is dumper equipment most suitable?
For what condition is dumper equipment most suitable?
What factor is NOT part of the selection criteria for earthwork equipment?
What factor is NOT part of the selection criteria for earthwork equipment?
What is a primary function of a backhoe?
What is a primary function of a backhoe?
Which piece of earthwork equipment is best suited for bulk excavation?
Which piece of earthwork equipment is best suited for bulk excavation?
What is one of the required actions for persons granted temporary permits during construction?
What is one of the required actions for persons granted temporary permits during construction?
Which of the following is NOT a type of earthwork equipment?
Which of the following is NOT a type of earthwork equipment?
What primary function does a roller compactor serve in construction?
What primary function does a roller compactor serve in construction?
When might vehicular access to a construction site be restricted?
When might vehicular access to a construction site be restricted?
Which earthwork equipment is primarily used for leveling uneven ground?
Which earthwork equipment is primarily used for leveling uneven ground?
What is a key factor to consider when selecting construction equipment related to social impacts?
What is a key factor to consider when selecting construction equipment related to social impacts?
Which factor is NOT considered when selecting construction equipment?
Which factor is NOT considered when selecting construction equipment?
What must a person do if they wish to deposit building materials on the street without permission?
What must a person do if they wish to deposit building materials on the street without permission?
Which aspect is crucial when considering safety requirements during equipment selection?
Which aspect is crucial when considering safety requirements during equipment selection?
What is one consequence of not properly securing deposited building materials?
What is one consequence of not properly securing deposited building materials?
Which method can typically reduce carbon emissions when selecting equipment?
Which method can typically reduce carbon emissions when selecting equipment?
What type of permit is required for the erection of scaffolding on a street?
What type of permit is required for the erection of scaffolding on a street?
Which of the following is a requirement for materials deposited on the street?
Which of the following is a requirement for materials deposited on the street?
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Study Notes
Earthwork Equipment
- Hydraulic Clamshell used for excavating foundation pits, deep confined spaces, and loose soils.
- Dozers primary function is to push, dig, excavate, and level materials, also used for clearing trees and vegetation, can act as towing tractors.
- Roller Compactor compacts earth and other materials.
- Scraper cuts, collects, and moves large quantities of spoil across construction sites, also used for site leveling, loading, and hauling.
- Dumper best suited for transporting large amounts of material over distances both on and off site.
- Grader primarily used to level and flatten soil surfaces, removing unnecessary layers of soil, dozers are typically used for rough grading while graders are used for finishing.
Earthwork Selection Criteria
- Quantities of Material: Consider the volume of material to be excavated.
- Soil Type and Condition: Impact the type of equipment required.
- Weather Conditions: Poor weather can affect equipment performance and safety.
- Excavation Speed: The timeline for excavation will influence equipment choice.
- Excavation Depth: Depending on the depth, certain equipment may be more suitable.
- Material Disposal Method: How the excavated material is disposed of impacts the process.
Types of Earthwork Equipment
- Backhoe: Also known as a rear actor, performs digging holes and trenches, excavation, landscaping, breaking up asphalt and concrete, loading and unloading materials, and leveling uneven ground.
- Front Shovel: Excavates various soil types, digs and loads earth or fragmented rock, depth limitations.
- Dragline: Best suited for bulk excavation in loose or waterlogged soils below its own track level.
- Hydraulic Clamshell: See above
- Dozers: See above
- Roller Compactor: See above
- Scraper: See above
- Dumper: See above
- Grader: See above
Factors on Selection
- Labour Consideration: Trained labor availability is key.
- Safety Requirements: Site safety is essential.
- Environmental Considerations: Carbon emissions, noise, vibration, and dust impact the environment.
- Authority Requirements: Adherence to relevant statutory standards, regulations, and guidelines is crucial.
Uniform Building By-Laws
- Part II (Submission of Plans for Approval) Temporary permits are required for:
- Erection of builders' working sheds or stores
- Depositing building materials on streets
- Erection of scaffolding
- Hoarding on streets
- Part IV (Temporary Works in Connection With Building Operations) Commencement of building operation is regulated by By-Laws 48.
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