Worked examples: Use of stadia Tacheometry Formulae A 1" reading theodolite having a multiplying constant of 100 and an additive constant of 0 was centred and levelled a height of 1.48m above a point C of reduced level 46.87 A levelling staff was held vertically at points D and L in turn and the readings shown in the table below were taken Calculate (i)the reduced levels of points D and L (ii) the horizontal length of DL Staff Staff Readings (m) Vertical circle readings Horizontal circle readings D 3.240, 3.047, 2.853 87° 38' 53" 56° 49' 31" L 2.458, 2.230, 2.002 92° 21' 36" 98° 07' 18" 32
Worked examples: Use of stadia Tacheometry Formulae A 1" reading theodolite having a multiplying constant of 100 and an additive constant of 0 was centred and levelled a height of 1.48m above a point C of reduced level 46.87 A levelling staff was held vertically at points D and L in turn and the readings shown in the table below were taken Calculate (i)the reduced levels of points D and L (ii) the horizontal length of DL Staff Staff Readings (m) Vertical circle readings Horizontal circle readings D 3.240, 3.047, 2.853 87° 38' 53" 56° 49' 31" L 2.458, 2.230, 2.002 92° 21' 36" 98° 07' 18" 32
Residential Construction Academy: House Wiring (MindTap Course List)
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Chapter17: Lighting Fixture Installation
Section: Chapter Questions
Problem 6RQ
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Transcribed Image Text:Worked examples: Use of stadia Tacheometry
Formulae
A 1" reading theodolite having a multiplying constant of 100
and an additive constant of 0 was centred and levelled a
height of 1.48m above a point C of reduced level 46.87
A levelling staff was held vertically at points D and L in turn
and the readings shown in the table below were taken
Calculate (i)the reduced levels of points D and L
(ii) the horizontal length of DL
Staff
Staff Readings (m)
Vertical circle readings
Horizontal circle readings
3.240,
3.047,
2.853
87°
38'
53"
56°
49'
31"
L
2.458,
2.230,
2.002
92°
21'
36"
98°
07'
18"
32
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