6.10 m
8.84 m
10.21 m
10.82 m
10 mm
13 mm
16 mm
19 mm
longitudinal movement of rail
lateral movement of rail
vertical movement of rail
difference in level of two rails
bridges and approaches
joints
both [a] and [b]
none of the above
only (i)
(i)and(ii)
(ii) and (iii)
(i), (ii) and (iii)