Civil Engineering - Railways - Discussion

Discussion Forum : Railways - Section 4 (Q.No. 15)

Railways

15.

If a is average number of peaks more than 10 mm of uneveness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (I_c), as recommended by Indian Northern Railways, is

I_c = 10 - a - b - c/4

I_c = 20 - a - b - c/4

I_c = 30 - a - b - c/4

I_c = 40 - a - b - c/4