What is the steepest gradient permissible on a 2° curve for B.G. line having using gradient of 1 in 200 ?-A-1 in 250B-1 in 238C-1 in 209D-1 in 198-B-1 in 238

B 1 in 238 Ruling gradient = 1 in 200= 0.5%, Compensation for 2° curve =0.04*2 =0.08%, compensated gradient = 0.5 0.08=0.42% = 1 in 238.