DCC20303

LESSON OBJECTIVE

The basic principles, usage, terms, types of instruments, procedures of leveling, concept of contouring and organize the field work (DCC20303)

2.1 Explain the basic principles of levelling. 

      2.1.1 Relate principles and usage in general 

      2.1.2 Define the terms related to levelling survey 

      2.1.3 Define the types of instruments used in levelling 

2.2 Explain the procedures of levelling. 

      2.2.1 List the work procedures in levelling 

      2.2.2 Explain the procedure of setting up levelling instrument and two pegs test 

      2.2.3 Show the calculation of the reduce level by using the following methods;

                a.Rise and fall 

                b.Height of collimation 

      2.2.4 Show the Longitudinal section and cross section (profile) 

               a.Cut and fill 

               b.Proposed level 

2.3 Explain the concept of contouring. 

       2.3.1 List the contour characteristics 

       2.3.2 Explain grid and interpolation method of contour survey 

2.4 Organize the field work according to standard procedure and method of levelling. 

       2.4.1 Measure the ground level according to the levelling procedure 

                 a.Two Peg Test 

                 b.Series levelling 

                 c.Longitudinal section and cross section (profile