Answer: B) Shoring
Step-by-step explanation:
Shoring can be defined as a temporary structure intended to support an unsafe structure or building from collapsing. The shoring techniques that is used during the early stage of construction is EXCAVATION.
Shoring can be used when walls bulge out, walls crack due to unequal settlement of foundation and repairs are to be carried out to the cracked wall, when an adjacent structure needs pulling down, when openings are to be newly made or enlarged in a wall.
There are three types of shoring. They are
1) Raking shoring.
2) Flying shoring.
3) Dead shoring.