The plate load test conducted with a 75 cm diameter plate

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The plate load test conducted with a 75 cm diameter plate on soil subgrade yielded a deflection of 2.5 mm under a stress of 800 N/cm². The modulus of elasticity of the subgrade soil, in kN/cm², is

1. 141.6
2. 154.6
3. 160.0
4. 185.4

Correct Option: A

E =	1.18 × P_a
	δ

=	1.18 × 800 ×		75
			2

	0.25

= 141.6 kN/cm²