Question

Answer by stating either “True” or “False” in the space below and provide the correct statement/answer if “False”.

11)F.L. in levelling means; Formation level.

12)C.P. written in remarks column on a survey field note means; Change Point.

13)In scaling, the scale 1:200 cm mean, that for each 1 cm on plan equals 2 metres in real time.

14)Hight of collimation method to calculate reduce levels is used often to cover larger areas.

15)When volume is calculated, bulking of 30% is added to the total calculation if sand was the type of soil.

Answer 1

11) F.L. in levelling means; Formation level.

TRUE Formation level is prepared ground on which a sub base layer is laid is the level at which excavation ceases and construction starts. It is the lowest point of the path structure.

12) C.P. written in remarks column on a survey field note means; Change Point.

TRUE The point on which both the foresight and back sight are taken during the operation of levelling is called change point.

13) In scaling, the scale 1:200 cm mean, that for each 1 cm on plan equals 2 metres in real time.

TRUE

1 cm on plan means 200 cm in real time... 200 cm = 2 m....Hence TRUE

14) Height of collimation method to calculate reduce levels is used often to cover larger areas.

TRUE

This method is generally used where more number of readings can be taken with less number of change points for constructional work and profile leveling.

15)When volume is calculated, bulking of 30% is added to the total calculation if sand was the type of soil.

TRUE

Bulking in sand Occurs When dry sand interacts with the atmospheric moisture. Presence of moisture content forms a thin layer around sand particles. This layer generates the force which makes particles to move aside to each other. This results in the increase of the volume of sand.

% of Moisture content	Percentage of Bulking with respect to volume
2%	15%
3%	20%
4%	25%
5%	30%