Leveling is a method or element of land surveying which deals with determining points on land surface above sea level. The points of known height are called benchmarks and they are determined from an assumed zero height point at sea level called datum. It employs leveling instrument such as theodolite and the abney level.
The following are importance of leveling in field work:
- It help the surveyor or cartographer to make contour maps of the land sea surface. this is because it determine the benchmark
- It help pipe transport engineers to ensure appropriate slope of the land that will allow smooth movement of the liquid in the transit e.g water and liquid
- It help contractors to lay a level ground on which they can elect the building
- It is also important in the construction of routes of transport like roads and railways