The results of insitu testing and laboratory results are interpreted and analyzed by our engineers to carry out geotechnical design of foundation systems. The type of foundation is based on the geotechnical properties of natural ground conditions/sub-strata and the anticipated loading conditions. If the loads are nominal and meets bearing capacity requirements of the given soil condition, the structures can be placed on shallow foundation. However if the loads are high with poor soil conditions the structure shall be placed on RCC Pile Foundations.
The types are foundation systems are as follows:
1) Isolated/ Combined Footing (Shallow Foundation)
Isolated footing is provided to support an individual column and can be circular, square or rectangular slab of uniform thickness. Sometimes, it is stepped or haunched to spread the load over a large area.
However when the two columns are so close to each other that their individual footings would overlap, combined footing are proposed to distribute the loads evenly.
2) Raft or Mat Foundation (Shallow Foundation)
When loads are high or soil conditions are poor to support a structure on isolated/combined footing, raft or mat foundations are proposed. It is a large slab supporting a number of columns and walls under the entire structure or a large part of the structure. It is required when the allowable soil pressure is low or where the columns and walls are so close that individual footings would overlap or nearly touch each other.
It is also useful in reducing the differential settlements on non-homogeneous soils or where there is a large variation in the loads on individual columns.
3) Pile Foundations (Deep Foundations)
If structural loads are very high and bearing capacity requirements for shallow foundation are not met the structure has to be supported on pile foundations. Piles are structural columns that transfers load from the structure to deeper surface with stronger stratification.
Isolated footing is provided to support an individual column and can be circular, square or rectangular slab of uniform thickness. Sometimes, it is stepped or haunched to spread the load over a large area.
However when the two columns are so close to each other that their individual footings would overlap, combined footing are proposed to distribute the loads evenly.
2) Raft or Mat Foundation (Shallow Foundation)
When loads are high or soil conditions are poor to support a structure on isolated/combined footing, raft or mat foundations are proposed. It is a large slab supporting a number of columns and walls under the entire structure or a large part of the structure. It is required when the allowable soil pressure is low or where the columns and walls are so close that individual footings would overlap or nearly touch each other.
It is also useful in reducing the differential settlements on non-homogeneous soils or where there is a large variation in the loads on individual columns.
3) Pile Foundations (Deep Foundations)
If structural loads are very high and bearing capacity requirements for shallow foundation are not met the structure has to be supported on pile foundations. Piles are structural columns that transfers load from the structure to deeper surface with stronger stratification.