SELF PRACTICE 2

RISE and FALL values ​​can be calculated with the following subtraction,

• BS-IS

• FS-BS

• IS-FS

• IS-IS

​ ​

Height of Collimation (HOC) = ______ + ​ ​BS

Reduce Level = ​ ___ - IS @​ FS

Find different of level using Rise and Fall method for point 1 to 2

• 1.356

• 1.365

• 3.245

• 3.254

Find different of level using Rise and Fall method for point 3 to 4

• 2.190

• -2.190

• 0.460

• -0.460

Find first HOC value base on data given

• 81.430

• 80.070

• 80.750

• 81.340

Calculate RL for station number 3,

• 78.201

• 78.120

• 79.575

• 79.557