Task 3 survey CALC. & Report

Question 1

What is digital levelling?

Answer 1

Digital levelling refers to the process of using electronic instruments to measure and adjust the elevation or level of surfaces with high precision in various applications.

Question 2

Why is leveling done in construction?

Answer 2

ensure all the levels on site refer to a datum, including floor levels and drains.

Question 3

what are the two types of levelling?

Answer 3

1) differential / spirit levelling
2) indirect - trigonometric or barometric.

Question 4

what is backsight?

Answer 4

the first reading of any set up and would be booked in the column labeled backsight.

Question 5

How do you calculate starting reduced level?

Answer 5

height of collimation - intermediate sight

Question 6

How do you calculate the reduced level (excluding the starting level) ?

Answer 6

height of collimation - backsight

Question 7

how do you calculate the first rise?

Answer 7

backsight - intersight

Question 8

how do you check your answer is correct after finishing the table?

Answer 8

1) calculate sum of backsight
2) calculate sum of foresight
3) do the calculation sum of BS - sum of FS
4) first RL - Last RL
5) check the answer to step 4 and 3 are the same.
6) if they are the same the answer is correct.