2) What is the controlling factor for locating a highway or canal on a contour map?

3) What staff reading required for setting given grade?

4) What is the process of erecting stakes at a given elevation?

5) Stakes or pegs erected in a ground in such a way that their tops are at a given?

6) Formation level of point A 130.00m and ground level at A is 132.265m, Height of instrument is 134.255. Then grade rod is?