The plate bearing test is an in-situ test carried out to determine the ultimate bearing capacity of the ground and predicts the overall settlement under a given load. The test is usually carried out at foundation level, either on the surface or in a shallow trial pit and involves applying a given load to a steel plate via a suitable reaction load (tracked 360 excavator). The amount of settlement is then recorded at each increment and is used to calculate California Bearing Ratio (CBR) and Modulus of sub grade reaction values. A specified load can also be applied to the plate to determine the average settlement of the test material.
Common requirements for this type of test include sub-base and type 1 suitability for access roads, suitability for plant positions such as piling rigs and cranes and overall settlement figures for proposed structures.
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