1.2. Time of installation will be affected because of work planning change. First, we planned to use mechanize process because the machinery is faster than using manpower about 200 m. per day and use less manpower. In our point of view, the installation between Slab Track and Plinth Track, we would like to inform you that the installation Slab Track is easier than the Plinth Track on the average about 30 m per day. The installation of Plinth Track is the complex especially the install Track gage and Rail inclination area as a result the duration install increased about 6 – 9 months the official instruction from GBSC.