Direct leveling by traversing ₪ 2.3 Mixed pathways

Direct leveling by traversing ₪ 2.3 Mixed pathways

From any station of the level in a traverse, and after having recorded the backward reading on the previous traverse point, the operator aims at several detail points and performs on each of them a single reading which is therefore a forward reading.
Then it ends the station by playing forward to the next waypoint. For example, in the figure below, the points 1 , 2 and are radiated from the station S1 whose rear point is the reference (R) and the front point A.
The operation in S1 is called radiation.

When a traverse includes radiated points and traverse points, it is said to be a mixed traverse
The progression of the figure opposite passes through the points RABCDE and R’.  Points 1, 23456 and 7 are radiated. 
The whole is a  cheminement mixte encadré  between R and R´. on the leveling book, a radiated point is directly identifiable by the fact thatr it does not include a back reading 
Calcul,Nivellement Direct,Cheminement,compensation, topographie
When the measurement is finished, the path is first calculated without taking into account the radiated detail points. Then the radiated points are calculated and noted, for exeample; in another color.
Their calculation is fifferent from that of chimney points :
₪  All points radiated from the same station are calculated from the altitude of the back point of the station. This difference in calculation : first the path alone, then the rays and by using different colors.  

₪  There is no compensation on the height difference of a radiated topographic point since there is no possible control of its value.

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