Line Levelling - Leica Runner 20 Manual De Usuario

Line levelling

R V
d d
1 2
I
1
A
Wanted:
Height difference (∆H) between
point A and B.
Select instrument station
and staff location by
pacing off in that way, that
approximately the same target
distances are resulting (d1 ≈ d2;
approx. 40 to 50m).
Procedure:
1. Setup instrument at I
RUNNER 20/24-1.0.0en
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R V
I
2
2
3
2. Setup level staff vertically at
point A.
3. Aim on staff and read off and
take down height (backsight
R).
4. Setup level at the
changepoint 2, aim on staff
and read off and take down
height (foresight V).
5. Setup level at I
at the hangepoint 2 and read
backsight and take down.
.
1
R V
I
3
B
∆H
, airm on staff
2
13
6. Carry out a foresight at
changepoint 3.
7. Continue in the same way
until height at point B is
measured.
Result:
∆ ∆ ∆ ∆ ∆ H = sum backsight - sum
foresight
Example for the booking:
Point Back- Fore-
No. sight R sight V
A +2.502
2 +0.911 -1.803
3 +3.103 -1.930
B -0.981 651.902
Sum +6.516 -4.714
Measuring
EN
DE
FR
ES
IT
NO
SV
DA
NL
PT
FI
Height
650.100
∆H=
+1.802