If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is_______________? August 12, 2021January 14, 2019 by admin If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is_______________? A. 40 B. 45 C. 50D. 55