plastic shrinkage repairing
The perimeter beam around the edge of a raft foundation.
The main advantage of a raft foundation is that it is more economical. Another advantage is that it requires little excavation. The disadvantages of raft foundations are that there is a greater potential for erosion, and they require specific treatments to bear a load.
It are a Afrikaans way of saying Raft Foundation.
disvantages of a narrow strip foundation
Types of raft foundation are 1. Solid slab raft 2. Beam and slab raft 3. Cellular rafts
They r the same. There is no difference.
The raft will help to avoid any settlement that would occur to strip the foundation. The mat is just placed there to avoid slipping.
just pour concrete on caison
If the soil is so lose that it cant hold the building even with pile foundation. So, piled raft foundation is used which make the building to float like a boat. That obeys Archimedes' principle-it is buoyed up by the weight of the earth displaced in creating the foundation.
Matt or Raft Foundation Combined Footings Pile Cap Foundations Isolated Foundations Continous Foundation
Raft foundation is reinforced concrete slab that is supported on a compacted hardcore base that is bigger than the raft. The procedures in construction the foundation involves checking the soil properties, and making the edge of the raft stepped to make a toe so the outer leaf of the wall goes below ground. The slab is reinforced with steel, a radon barrier is added, and a damp proof course is put in.
For a raft foundation, the amount of steel required is in RCC per square meter. This can be calculated using the value of 18 kilograms steel per square meter.