During decades and centuries of urbanization, the best available ground for construction has often been populated or otherwise utilized already. Softer ground conditions require a stabilizing technique before construction. The technique is to drill casing tubes through the overburden to the solid bedrock and fill them with concrete. Pile foundations are principally used to transfer the loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth, increasing the effective size of a foundation and resisting horizontal loads. They are typically used for large structures and in situations where soil is not suitable to prevent excessive settlement. Drilled piles made with Survey Corporation’s Casing Systems have significant advantage compared with other piling methods and systems: Fast drilling with maximum straightness of the hole, reliability to reach the targeted depth, and extreme simplicity to use.

We specialize in design and installation of large diameter piles and diaphragm walls, under-ream piles and in-situ piled retaining walls.

Foundation provides support for structures, transferring their load to layers of soil or rock that have sufficient bearing capacity and suitable settlement characteristics to support them.

There are a very wide range of foundation types suitable for different applications, depending on considerations such as:

Shallow foundations are typically used where the loads imposed by a structure are low relative to the bearing capacity of the surface soils.
Deep foundations are necessary where the bearing capacity of the surface soils is not adequate to support the loads imposed by a structure and so those loads need to be transferred to deeper layers with higher bearing capacity.