The 'plate load test' (IS 1888) is used to determine:
Choose the correct answer
Shear strength from torsion
Safe bearing capacity and modulus of subgrade reaction from load-settlement curve at foundation level
Permeability of sand strata
Dynamic soil properties
Correct Answer
B. Safe bearing capacity and modulus of subgrade reaction from load-settlement curve at foundation level
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Plate load test: rigid steel plate (450 mm or 600 mm sq) placed at foundation depth; load applied in increments; settlement measured. Plot: load-settlement curve → find: (1) Safe bearing capacity (from q-s curve at failure or at 25 mm settlement); (2) Modulus of subgrade reaction k = q/s. Used for foundation design and pavement subgrade evaluation.
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