• 1. Foundation testing: Determine the bearing capacity and deformation modulus of natural and composite foundations.
• 2. Roadbed/pavement evaluation: Testing the compaction and bearing capacity of roadbeds such as highways and airport runways.
• 3. Quality control: used for the quality acceptance of layered fill or backfill soil during the construction process.
• 4. Design verification: Provide on-site measured parameters for engineering design (such as foundation reaction coefficient K30).

By gradually loading onto the tested surface and recording the settlement at each level of load, draw a load settlement curve (P-S curve) and calculate according to specifications (such as ASTM D1196):

• ▹ Foundation bearing capacity (such as ultimate load or load corresponding to allowable settlement).
• ▹ Deformation modulus (Ev or Evd).
• ▹ Unit area load at K30 settlement of 1.25mm.