Civil Engineering :: Surveying
- Spring tides are caused when
- Equation of time which is the difference between apparent solar time and mean solar time at any instant, vanishes during one year
- The time interval between successive transits of the moon, is
- If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to
- A star in northern sphere is said to transit
- Normal tension is that pull which
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After fixing the plane table to the tripod, the main operations which are needed at each plane table station are
(i) Levelling
(ii) Orientation
(iii) Centering
The correct sequence of these operations is - For accurate work, the steel band should always be used in preference to chain because the steel band
- Sidereal day
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