Multichannel Analysis of Surface Waves (MASW) to Estimate the Shear Wave Velocity for Engineering Characterization of Soils at Hawassa Town, Southern Ethiopia

Table 1

Correction factors used in the field to determine SPT-N values in this study [41].

Factors	Terms	Equipment variable	Correction factor
Hammer efficiency	EH	Donut hammer	0.5
Borehole diameter	CB	65–155 m	1
Sampling method	CS	Standard sampler	1
Rod length	CR	3–4 m	0.75
		4–6 m	0.85
		6–10 m	0.95
		>10 m	1.00