FAQ

What is the Height above Datum?
Height above datum is the elevation from surface of zero elevation to which heights of various points are referenced. Height above Datum is usually measured using the Millimeter for Length. Note that the value of Height above Datum is always negative.
Can the Height above Datum be negative?
Yes, the Height above Datum, measured in Length can be negative.
What unit is used to measure Height above Datum?
Height above Datum is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Height above Datum can be measured.
Copied!