Requirement of Track Material for BG Track

Requirement of Track Material for BG Track

Rails

The standard length of the rails is 13 m for BG and 12 m for MG lines.

No. of rails per km for BG lines = 1000  / 2 13 ´

154 Wt of 52-kg rails per km = 52 × 154 = = 8008 kg

Number of sleepers

The number of sleepers to be used depends upon the sleeper density. Assume sleeper density to be M + 7, where M is the length of the rail in metres.

Number of sleepers per rail = 13 + 7 = 20 Number of sleepers per km = 77 × 20 = 1540

Fittings and fastenings

No. of fish plates per km  = 2 × number of rails per km

=       2 × 154 = 308

(b)     No. of fish bolts   = 4 × number of rails per km

                   = 4 × 154 = 616

(c)      No. of bearing plates     = number of sleepers × 2

                   = 1540 × 2 = 3080

(d)     Number of dog spikes    = number of sleepers × 4

                   = 1540 × 4 = 6160

The requirement of track materials for MG lines can also be calculated in the same manner.