Excavation is the process of moving things like earth, rock, or other materials with tools, equipment, or explosives. It includes earthwork, trenching, wall shafts, tunneling, and underground. … In construction, excavation is used to create building foundations, reservoirs, and roads.
What are excavation works?
In construction terms, excavation is the process of removing earth to form a cavity in the ground. … Larger scale excavation works will require heavy plant such as bulldozers and backactors.
What are the steps of excavation?
The excavation process includes:
- setting corner benchmarks.
- surveying ground and top levels.
- excavation to the approved depth.
- dressing the loose soil.
- marking up the cut off level.
- the construction of dewatering wells and interconnecting trenches.
- marking the boundaries of the building.
- the construction of protection drains.
What are two types of excavation techniques?
A trench is a type of excavation that is generally deeper than it is wide at the top.
What is the importance of excavation?
Excavation is critical for every construction project because it creates a strong foundation for the project and provides a stable surface for the surrounding property.
What is done after excavation?
After excavation, layout the foundation and backfill the remaining excavated area around foundation with soil. Floor levels of residential buildings are higher than the natural ground level. Fill the area with soil up to floor levels and compact the soil. Now earth work of residential building is finished.
What are the risk of excavation?
There are a range of health and safety risks associated with excavation work including: falls from one level to another. the fall or dislodgement of earth or rock. vibration and hazardous noise.
How do you protect deep excavation?
Falling or dislodging material. Loose materials – may fall from spoil heaps into the excavation. Edge protection should include toeboards or other means, such as projecting trench sheets or box sides to protect against falling materials. Head protection should be worn.
What is a deep excavation?
Deep excavations, on the other hand, are defined as being any excavation which is more than 4.5 metres in depth – a considerable height indeed. Deep excavations are trickier to plan and implement than shallow excavations, for a variety of reasons, which is why they tend to only be carried out by trained professionals.