Plate Load Test

A plate load test is a field test that determines the bearing capacity and settlement of soil. It’s also known as a plate bearing test. 

How it’s performed 

1. Dig a test pit
2. Place a circular steel plate in the pit
3. Apply an increasing load to the plate using a hydraulic jack
4. Measure the settlement of the plate using dial gauges

When it’s used 

• To design and assess working platforms
• To design and select shallow foundations
• To measure the settlement of pavement base, sub base, and sub grade materials

Why it’s useful

• It’s a quick and easy way to determine the bearing capacity of soil 
• It’s useful for contractors and specifying authorities 
• It provides valuable data to project managers and decision makers 

Related equipment 

• Hydraulic jack and pump
• Steel shims
• Reaction beam or reaction truss
• Dial gauge
• Pressure gauge
• Loading frame
• Steel rule or tape measure
• Tripod, plumb bob, spirit level
• Hammer
• Set of wrenches