One such generally used a type of deep foundation is called as Hollow box foundation or buoyancy rafts foundation. These types of foundations are designed such a way that they behave as buoyant (floating) substructures for the net loading over it.

May 24, 2022 · Bouyancy rafts are also called compensated foundations. Buoyancy is produced by constructing a hollow substructure with a depth such that the weight of the soil excavated for it is equal to or slightly less than the combined weight of the superstructure and substructure. Worked Example on Buoyancy Raft Foundation

Buoyancy rafts are hollow substructures designed to provide a buoyant or semi-buoyant substructure beneath which the net loading on the soil is reduced to the desired low intensity. Buoyancy rafts can be designed to be sunk as caissons, they can also be constructed in place in open excavations.

Oct 10, 2024 · Buoyancy Raft foundations, also known as floating foundations, are an innovative solution that prevents houses from flooding. It is a type of deep foundation designed to elevate the house above flood waters and is widely used in building construction on soft and weak soils.

Dec 15, 2021 · A buoyancy raft is known as a floating foundation or hollow box foundation. They are used when construction takes place on soft, weak soil. In buoyancy rafts the soil underneath the foundation is removed and the foundation - in essence - floats.

Hollow box foundations, sometimes referred to as buoyancy rafts, are used when structures need to be supported on soft or wet soil. These foundations are made of hollow boxes that move soil, providing stability and buoyancy.

Dec 9, 2024 · One popular type of deep foundation is the buoyancy raft or hollow box foundation, also known as a floating foundation. These foundations are designed to act as buoyant substructures, reducing the load intensity on the soil.

Aug 11, 2022 · The buoyancy raft foundation is a type of foundation in which the design considers the principle of buoyancy effects. Therefore, the foundation’s total and differential settlements are reduced by lowering the resulting net weight on the soil.

May 20, 2020 · Buoyancy Rafts: (Hollow Box Foundations) To provide a buoyant or semi-buoyant substructure beneath which the net loading on the soil is reduced to the desired low intensity, buoyancy rafts are used and buoyancy rafts are hollow substructures designed and one of the types of deep foundation.

Jan 22, 2013 · The buoyancy raft works on a similar principle to that of a floating structure where the support for the raft is mainly obtained by displacing the weight of earth or overburden by the volume of a large voided foundation.