A Designer’s Approach for Estimation of Nuclear-Air-Blast-Induced Ground Motion

Table 3

Constrained modulus of playa silt at Frenchman Flat [4].

Method	Notation	Constrained modulus (MPa)
		For depths less than 18 m	For depths more than 18 m
Deduced from observed ground motion	T1	96.6	552
Calculated from seismic velocity	T2	242	1035
Triaxial tests: initial loading	T3	55.2	103.5
Dynamic 1-D compression test: initial loading	T4	69	138
Triaxial tests: reloading	T5	276	448.5
Resonant column test	T6	276	759