Podcast
Questions and Answers
What is the reference point with respect to which the levels of other points or planes are calculated?
What is the reference point with respect to which the levels of other points or planes are calculated?
- Benchmarks
- Vertical Line/Axis
- Datum or datum surface (correct)
- Mean Sea Level (MSL)
What is the average height of the sea for all stages of the tides?
What is the average height of the sea for all stages of the tides?
- Reduced Level (RL)
- Benchmarks
- Mean Sea Level (MSL) (correct)
- Datum or datum surface
What is the level of a point taken as height above the datum surface?
What is the level of a point taken as height above the datum surface?
- Benchmarks
- Datum or datum surface
- Mean Sea Level (MSL)
- Reduced Level (RL) (correct)
What is a relatively permanent reference point, the elevation of which is known with respect to Mean Sea Level (MSL)?
What is a relatively permanent reference point, the elevation of which is known with respect to Mean Sea Level (MSL)?
What is the highest precision benchmark established by a national agency in India?
What is the highest precision benchmark established by a national agency in India?
Where is the elevation of all GTS benchmarks established with respect to Mean Sea Level (MSL) in India?
Where is the elevation of all GTS benchmarks established with respect to Mean Sea Level (MSL) in India?
What is the purpose of establishing benchmarks in levelling?
What is the purpose of establishing benchmarks in levelling?
What is the characteristic of a temporary benchmark?
What is the characteristic of a temporary benchmark?
What is the function of the level tube in a levelling instrument?
What is the function of the level tube in a levelling instrument?
What is the purpose of the metal shoe at the bottom of a levelling staff?
What is the purpose of the metal shoe at the bottom of a levelling staff?
What is the GTS benchmark used for?
What is the GTS benchmark used for?
What does the foot of the metal shoe of a levelling staff represent?
What does the foot of the metal shoe of a levelling staff represent?
What is the primary purpose of check lines?
What is the primary purpose of check lines?
What type of measurements are taken to locate ground features?
What type of measurements are taken to locate ground features?
What is the characteristic of a base line?
What is the characteristic of a base line?
What is the purpose of selecting secondary stations on main lines?
What is the purpose of selecting secondary stations on main lines?
What are the two methods used for setting perpendicular offsets?
What are the two methods used for setting perpendicular offsets?
What is the consideration for selecting station points?
What is the consideration for selecting station points?
