Steel bored pipe pile casing is a steel structure used to encase a material inside. It acts as protection against external force or to increase the load-bearing capacity of the structure.
The steel casing is used to encase either vertical or horizontal materials. It has a wide array of use. It can be used as encasement of concrete irrigation channels, electrical marine wirings such as the trans-ocean telephone. Moreover, it can be used as a casing for deep wells, concrete foundations, and etc.
In the Philippines, if the steel casing is used in on-land construction for concrete foundation, it is called bored piles. Normally the soil needs to be vertically drilled in order to put the steel casing in the borehole. If the steel casing is to be used on offshore marine structures such as ports and reclamations. The pipe is commonly named piling pipes. Because the steel casing required on these structures are long and in Tagalog is called “pilote”.
The bored pile can be temporary or permanent depending on the requirement of the structure. On private building foundations, for example, designers tend to use bored piles as a temporary encasement of the reinforced cast-in-place concrete foundation. This is to minimize the cost of the project. However, DPWH often requires them on bridges that are to be built on soft soil, to increase the stability of the foundation.
Piling pipes on the offshore structure can be used as the foundation of the pier. These can also be used to create cofferdams or retention walls.