How to calculate height of a building using theodolite?
To calculate height of a building the following equipment are required:=
Θ1=
12˚2’20”
To calculate height of a building the following equipment are required:=
EQUIPMENTS
:-
1) THEODOLITE
2) TRIPOD
STAND
3) RANGING
RODS
4) CHAIN
5) ARROWS
6) PLUM BOB
7) PEG
PROCEDURE:--
Let,
H= height of building,
1. Setup your theodolite .
2. Place a peg right below the centre of theodolite
using plum bob.
3. Measure the height of instrument.
4. Place ranging rods between building
and instrument.
5. Measure the distance between theodolite
and building.
6. Sight the top of building C and record the angle θ1.
7. sight the bottom of building A
record the angle θ2.
H=height
of building=H1+H2
H1=
height ofinstrument =2.5m
H2=?
Θ1=
12˚2’20”
Θ2=
5˚8’20”
OA =
61.8m
H=H1+H2
=2.5+BC
=2.5+tan Θ1 O’B
=2.5+tan
12˚2’20” X 61.8
=2.5+13.18
=15.68m
SO IN THIS WAY YOU CAN FIND HEIGHT OF A BUILDING.