6.4 Comments
6.4.1 Station Plan
(l) Escalator and Elevator
(a) Each station should be equipped with escalators.
(b) Elevators are planned to be installed between concourse and platform. For handicapped persons, however an elevator shall also be installed between ground and concourse.
6.4.2 Track and Maintenance Plan
The followings are the major comments regarding the track and maintenance.
(1) The railway materials such as rail, PC sleepers, rail fastening, ballast may be selected as much as practical from the ones used in Indian railways. In doing so, the cost for track materials could become cheaper because of mass production of such materials.
(2) With respect to rail welding, gas pressure welding will be recommended because of its cheapness of equipments and reliability of welding results.
(3) Heat treated rail is recommended in the sharp curves where much rail wear will be expected. Heat treated rail adopted by JR group is recommended.
(4) Track structure should be designed so as to minimize the total cost of annualized investment cost and annual maintenance cost, under the condition that the track strength should be strong enough to support the given train running. In this context, sleeper spacing of 1200〜1400 pieces per km may be examined from the point of optimal economy although these spacing provide the sufficient strength to support the given LRT train running. (It means that the denser spacing of sleepers might be suitable depending on the examination of the optimality of economy.)
(5) With respect to track geometry inspection equipment, we recommend a track master as shown in Appendix 6.3.1 for Phase 1, because Phase 1 has only 25.9 km route length and because investment cost can be decreased. 12 km of track can be recorded per day. Accordingly one week will be enough to measure the whole track of Phase 1.
