Basements

Question 1

3 types of basement construction methods and the most common one

Answer 1

Open cut, vertical cut, top-down

Open cut most common (traditional)

Question 2

Advantages of open cut

Answer 2

Low budget, high quality, no lateral support

Question 3

Disadvantages of vertical cut

Answer 3

Not suitable for large scale basement
High budget
Requires temporary support system

Question 4

Disadvantages of top down

Answer 4

High budget
Complex support construction
Requires lighting and ventilation

Question 5

Advantages of top down

Answer 5

Short construction time, low ground movement

Question 6

Disadvantages of open cut

Answer 6

Requires a large space for construction
High risk of collapsing in high moisture
Not able to use for deep basements

Question 7

Advantages of vertical cut

Answer 7

Structural support, minimised ground settlement, improved site conditions (reduces impact of bad weather)