Year Of Working:
Type Of Work:
In Proposed tunnel project at Khapoli to Lonawala Patch , Site covered with hiils and valley terrains all the sides. This survey work carried out in three different phases. In the first phase all T.B.M. points were fixed at every 100m c/c with help of Autolevel machine with accuracy of ± 1.6mm per Km. In second phase accurate google coordinates at the same T.B.M. pillars were taken with help of DGPS satellite survey instrument. Triangulation Traverse method used with 4 to 6 hours of data collection of each T.B.M. in Static data recording. In Final phase, all points were rechecked with latest Robotics Total Station Machine and 360 prism with accuracy of ± 1 mm to each pillar.