26 Questions
What is the main objective of earthworks in construction projects?
To create a level required for subsequent construction items
Which factors determine whether excavation is carried out by hand, mechanically, or both?
Soil conditions, shape of cut section, ground water, and time required
What are the typical applications of hand (manual) excavation?
Continuous wall foundation and isolated foundation
Why is hand excavation not used with rock soil?
The tools are not capable of breaking rock soil
When is mechanical excavation typically used?
When all soil needs to be carried away from the site
What should be left during hand excavation to allow for easy concrete works?
(70-100) cm wide path between sides of pits and removal soil
What is the maximum loose depth for depositing layers of filling for roads, yards, and parking areas?
0.1 m (10 cm)
Which method of removing ground water involves making trenches at the lowest level of excavated pits and leaving the water to accumulate?
Direct remove
What could continuous pumping from an excavation potentially cause?
Settlement to adjoining buildings
What is used for heavy work to remove ground water, consisting of a group of metal pipes with filter and valve at the end?
Well points system remove
What should be provided to prevent excessive mud and grit from being sucked up during pumping?
Strainer at the end of suction pipe
What should backfilling generally consist of?
Excavated material excluding upper layers of topsoil
'All filling shall be deposited in layers, not exceeding __________ loose depths.'
$0.3 m (30 cm)$
'Material for refilling around buildings and other zones may consist of __________ but no rubbish material to be permitted.'
$Excavated material$
'For roads, yards and parking areas, all filling up to underside of the Sub-base shall be of a material suitable for __________ compaction.'
$Rolling$
'An indication of the way ground water control should be done can often be gained from the __________ report on trial pits.'
$Site investigation$
Hand (Manual) excavation can be used for small jobs such as continuous wall foundation and isolated foundation.
True
Mechanical excavation is typically used for small quantity jobs.
False
Excavation works include basements, sewer, and shallow combined foundation.
False
The objective of earthworks is to reach the required level for constructing roads and parking areas.
False
Hand excavation is used with rock soil due to its efficiency in such conditions.
False
The well points system is a cheaper method of removing ground water compared to the direct remove method.
False
Mechanical excavation is typically used for removing ground water from open sites.
False
Hand excavation is generally not used with rock soil due to its difficulty of removal and the need for specialized equipment.
True
Ground water can be discharged directly into road gullies during pumping without any restrictions.
False
The material for refilling around buildings and other zones may consist of excavated material as well as rubbish material.
False
Test your knowledge of earthwork construction methods and equipment with a focus on excavation and filling (embankment). Learn about the specific types of earthworks, objectives, and the importance of reaching required levels for subsequent construction items. This quiz covers topics such as foundations, basements, and trenches.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
