Investigation of Soil Liquefaction Potential around Efteni Lake in Duzce Turkey: Using Empirical Relationships between Shear Wave Velocity and SPT Blow Count (N)

Table 3

The rod length correction with respect to the depth.

Depth	Correction for rod length
𝑑	𝐶𝑅
𝑑<3 m	0.75
𝑑 = 3-4 m	0.8
𝑑 = 4–6 m	0.85
𝑑 = 6–10 m	0.95
𝑑 = 10–30 m	1.0 m