The RL of Benchmark taken on the roof at a tunnel is + 200.00 m. The BS taken on the staff held inverted is + 2.500 m. If the FS is taken on a staff held vertically at a point A is +2.500 m. Find the RL of A?
1
+205.00
2
+202.500
3
+195.00
4
+197.500