📌 Rise and Fall Method – Key Points Concept - A precise leveling method in surveying. - Determines Reduced Levels (RLs) by comparing consecutive staff readings. - Smaller staff reading → Rise - Larger staff reading → Fall --- Steps 1. Take Back Sight (BS) on a benchmark (known RL). 2. Take Fore Sight (FS) on the next point. 3. Calculate: - Rise = BS − FS (if BS > FS) - Fall = FS − BS (if FS > BS) 4. Find RL of next point: - RL(next) = RL(previous) Rise - RL(next) = RL(previous) − Fall 5. Repeat