What Is Excavation?
Excavation is very important part of civil construction line. An excavation means a man-made cavity or depression in the earth’s surface formed by earth removal.
Deep excavation in soil or hard soil more than 15 ft or 4.5 m is called deep excavation.
Open excavation means an excavation without any retaining wall system by providing suitable slope of excavation such as 1:2, when surrounding allows.
RETAINED DEEP EXCAVATION
A deep excavation in soil or rock with some retaining wall system like concreting pile, Cement Spray in soil wall, usually in populated areas.
NECESSITY OF DEEP EXCAVATION
- Deep excavation has become more a necessity of better utilization of space as the population of the world increased.
- As far as the mega structures like dams are concerned, deep excavation may be employed for the construction of different components like power stations.
- But the contribution of basements in the stability against overturning of high rise buildings cannot be neglected which obviously require deep excavation.
- Grading: Moving earth to change elevation
- Temporary shoring
- Back fill or fill: Adding earth to raise grade
- Compaction: Increasing density
- An excavation means a man made cavity or depression in the earth’s surface formed by earth removal.
Deep Excavation also deep excavation is a very important part of civil construction.
- An excavation in soil or hard rock more than 15 ft or 4.5 m deep is called deep excavation.
- It means an excavation without any retaining system by providing suitable slope of excavation such as 1:2, when surrounding allows
Retained Deep Excavation
- A deep excavation in soil or rock with some retaining system, usually in populated areas.