a eet) listed in the other takendifferentential leveling  loop began and closed on a BM tree (elevation 323.48 ft). The plus sight and minus sight distance were kept approximately equal. Readings ( in ft) are3.18(+s) on BM tree, 4.76 (-s)  and 2.44 (+s) on TP1, 3.05(-S) and 6.63 (+S) on my BM X, 3.64(-S) and2.35 (+S) on TP2, 3.07(-S)  on BM Tree.

The following consecutive readings were taken with a level and a 4m leveling staff on a continuously sloping ground at a common interval of 30 m on line AB. Chainage 0 Level Station 30 0.585 0.930 A 60 1.95 90 2.845 120 3.645 150 3.93 B The reduced level (RL) of station A is 50.00. Calculate the reduced levels at all the points where the leveling staff is placed. Tabulate the results and apply usual checks. Also determine the gradient of line AB.

In a leveling work, sum of the Back Sight (B.S.) and Fore Sight (F.S.) have been found to be 3.085 m and 5.645 m respectively. If the Reduced Level (R.L.) of the starting station is 100.000 m, the R.L. (in m) of the last station is