Earthworks 101
This is the general term for all activities involving the movement and shaping of soil.
Earthworks
The process of refilling excavated areas around a structure after construction is finished.
Backfill
This process involves densifying the soil to prevent it from settling later.
Compaction
The specific process of removing soil or rock to prepare a site for construction.
Excavation
In "Cut and Fill" operations, this term refers specifically to the removal of material to lower ground levels.
Cut
This is the standard percentage added to the volume of Earth Fill or Backfill to account for compaction.
25%
This involves removing the upper layer of soil, which is often set aside for landscaping
Topsoil Stripping
In "Cut and Fill" operations, this term refers to adding material to raise ground levels.
Fill
As shown in the Gravel Fill diagram, what is the required thickness in millimeters for a well-compacted gravel base?
100mm
(SPECIAL QUESTION)
The process of placing and compacting soil to raise ground levels or fill voids.
Earth Fill
This material is used to improve stability, prevent water retention, and serve as a base for concrete.
Gravel Fill
(SPECIAL QUESTION)
What are the two main benefits of using Gravel Fill mentioned in the lesson?
Improves stability and prevents water retention
List any three of the four activities included in the definition of Earthworks.
Excavation, grading, backfilling, and compaction
(SPECIAL QUESTION)
According to the last presentation, what is the maximum approximate angle (percentage) for a slope in a "Cut and Fill" operation?
60%
Provide the formula used to calculate the final volume of Earth Fill or Backfill, including the compaction allowance.
Volume + 25% Compaction