A theodolite is set on a Benchmark A in order to measure the relative elevation AAB of a point B. The theodolite delivers an angle Z = 70° and the measured slope is S = 150m. The instrument elevation hi = 1.60 m and the observed value on the road set at the point B is r = 1.25m.

A theodolite is set on a Benchmark A in order to measure the relative elevation AAB of a point B. The theodolite delivers an angle Z = 70° and the measured slope is S = 150m. The instrument elevation hi = 1.60 m and the observed value on the road set at the point B is r = 1.25m.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter12: Subsurface Exploration

Section: Chapter Questions

Problem 12.1P

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Concept explainers

Highway Surveys and Location

Surveying is an operation in the civil engineering domain that requires collecting and identifying data regarding an area of land and topography. The data that is collected can be helped to plan and undertake the construction process. Civil engineers perform surveys to gather three-dimensional information regarding a particular area. Engineers specify several points on the surface of the earth and relationship between points, and the distance and angles between the points are evaluated. The data from this evaluation guides in drawing plans regarding buildings and structures.

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A theodolite is set on a Benchmark A in order to measure the relative elevation AAB of a point B. The theodolite delivers an angle Z = 70° and the measured slope is S = 150m.

The instrument elevation hi = 1.60 m and the observed value on the road set at the point B is r = 1.25m.

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