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.
The raft will help to avoid any settlement that would occur to strip the foundation. The mat is just placed there to avoid slipping.
pile is the steel layer and pier is the outer most layer'
to prevent collapse aspect of boring
Pile cap formwork is the formwork built to mold the concrete that binding together the pile or group of piles and the structure supported by the piles such as structure's foundation or column.
1. Excavation of the soil up to required depth.2. Ramming the foundation bed.3. Cutting the concrete over the reinforcement.4. Laying the reinforcement over the the foundation bed.5. Pouring the cement concrete over the reinforcement.
Matt or Raft Foundation Combined Footings Pile Cap Foundations Isolated Foundations Continous Foundation
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.
disvantages of a narrow strip foundation
It are a Afrikaans way of saying Raft 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.
concrete qty for bulb portion in pile foundation
The raft will help to avoid any settlement that would occur to strip the foundation. The mat is just placed there to avoid slipping.
types of foundation....1. shallow foundation 2. deep foundation 3. pile foundation
just pour concrete on caison
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.