In such a case it is more economical to provide a strip footing than to provide a number of spread.
Mat foundation vs spread footing.
Sometimes it is stepped to spread the load over a larger.
Under some conditions spread footings would have to.
Furthermore mat footings are helping to reduce the varying settlements caused by construction on non homogenous soils or uneven load distribution on the footing.
Footings can be of the following types.
This footing is used to.
Raft mat foundation is used in those places where we have less bearing capacity of the soil.
It is circular square or rectangular slab of uniform thickness.
At those places we use mat foundations to distributes the whole loads of the structure to the soil when the area of the footing was increase than the soil load bearing capacity will also increase because this foundation reduces the stress on the soil at the same place.
A number of footings repose on a foundation.
Mat footings are used when the building load is so high that spread or strip footings could not bear the weight or their employment would be inefficient.
Foundation is the support that bears all kinds of loadings.
Foundation is in direct contact with the soil and transmits it to the ground.
Footing transmits loads directly to the soil.
Mat or raft foundation.
All footings are foundations.
It is common to use mat foundation or deep basements to transfer the column loads to the underlying soil as well as provide floor slab for the basement.
Mat foundations are sometimes preferred for soils that have low load bearing capacities but that will have to support high column or wall loads.
A strip footing is provided for a load bearing wall.
A mat foundation also may be used to resist hydrostatic pressures or to bridge over small soft spots in the soil provided the mat is adequately reinforced.
Mat or raft foundation.
The isolated footing is commonly used in reinforced cement concrete columns because it very is simple and most economical as compared to the other footings.
Although mat foundations are more difficult and more costly to design than individual spread footings they can be used effectively.
Mat foundation raft foundation it is a combined footing that may cover the entire area under a structure supporting several columns and walls.
Foundations are the basement walls.
A mat foundation is used when the subsoil is weak and column loads are so heavy that the conventional spread footings cover more than 50 of the building area.