What are the advantages and disadvantages of plate load test?

Advantages of Plate Load Test Evaluation of bearing capacity of soil at a certain depth and prediction of settlement for a certain load. Shallow foundation can be calculated considering the allowable bearing capacity, which can be predicted from the plate load test. Time and cost-efficient. Easy to perform.

Why is plate load test not suggested for cohesive soil?

Plate load test is suitable for Cohesionless soil as in case of Cohesion soil the settlement takes place in longer duration which this test is not suitable. Then the settlement per each load increment is recorded to calculate the bearing capacity of the soil.

What is plate load method?

The plate load test basically consists of loading a steel plate placed at the level where the actual load is to be applied, and recording the deformation (settlement) corresponding to successive load increments. From: Soil Improvement and Ground Modification Methods, 2015.

What is the maximum size of plate for plate load test?

750 mm
Square or circular in shape. Thickness > = 25 mm. Size may vary from 300 to 750 mm. therefore, the maximum size is 750 mm.

WHY WE DO plate load test?

Plate load test is done at site to determine the ultimate bearing capacity of soil and settlement of foundation under the loads for clayey and sandy soils. So, plate load test is helpful for the selection and design the foundation. To calculate safe bearing capacity suitable factor of safety is applied.

How do you do a plate load test?

The test procedure of plate load test is as follows:

1. A seating load of 70 gm/cm2 is applied and released after some time.
2. The plate is loaded either through a kentledge or by the reaction through a truss or a beam.
3. The load is applied in the increments of 1/5th of the design load or 1/10th of failure load.

Why plate load test is required?

The plate load test is a field test, which is performed to determine the ultimate bearing capacity of the soil and the probable settlement under a given load. This test is very popular for the selection and design of the shallow foundation.

What is plate loading test?

Plate load testing involves the increasing loading of a circular steel plate placed on a ground surface and measuring the settlement induced, to determine bearing capacity. The method is commonly used to test working platforms but it is crucial to carry out the testing correctly, to ensure the safety criteria are met.

Why is the edge of plate load test machined?

They shall be machined so as to have the atness and roughness tolerances in accordance with Figures 1 and 2. The loading plate shall have two handles (see Figure 1).

What is the procedure of plate load test?

What is the minimum thickness of plate recommended for plate load test and why is it required?

A mild steel plate is used as a load-bearing plate whose thickness should be at least 25 mm thickness and size may vary from 300 mm to 750 mm. The plate can be square or circular. Generally, a square plate is used for square footing and a circular plate is used for circular footing.

How can we determine the bearing capacity of soil from plate load test?

The total value of the load on the plate divided by the area of the steel plate gives the value of the ultimate bearing capacity of soil. A factor of safety is applied to give the safe bearing capacity of soil.