Shoring :

Shoring is the process of temporarily supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. Shoring comes from shore, a timber or metal prop. Shoring may be vertical, angled, or horizontal.

Types of shoring

1. Racking shoring
2. Flying shoring
3. Dead shoring

1. Racking shoring

• Raking Shoring is also called inclined shoring. It can be defined as the shoring in which the inclined members are used to provide lateral support to the unsafe structure. Such inclined members are known as the rakers or the inclined shores.

2. Flying shoring

• Flying shoring is also commonly referred to as horizontal shoring. It can be defined as the shoring which is used to provide temporary support to the party walls of the two buildings where the intermediate building is to be pulled down and rebuilt.

3. Dead shoring

Dead shore is the system of shoring which is used to render vertical support to walls and roofs, floors, etc. when the lower part of a wall has been removed for the purpose of providing an opening in the wall or to rebuild a defective load bearing wall in a structure

Why Shoring is required

Due to several reasons like,

1. The standing height of the excavation pit wall exceeding 2m.
2. Heavy rains
3. High ground water table
4. Properties of the soil in which excavation is being done.

• The excavation pits becomes unstable, leading to collapse. This phenomenon is known as caving, which is very unsafe for men, materials and machinery. Shoring is the process of preventing the walls of an excavated area from caving or collapse. Hence, protective methods/ shoring against caving should be carefully designed, based on the soil conditions, weather conditions, excavation depth and other parameters which govern the strength of the system.