Question

The point whoes R.L. is given is known as ​

Answer 1

Bench mark is the answer

Step-by-step explanation:

RL is the short term for reduced level.

Reduced level is defined as the vertical distance between the point of survey and the reference datum level with respect to which RL of other points is determined.

Hence, the point whose RL is known is termed as the bench mark. They are usually determined by higher authorities and mentioned on roads or specific locations which can be taken as reference while designing roads or other structures.