The cuvature and refraction effects are taken into account in the following case: Level is set-up over A and the staff is held at B. R.L. of A = 150.000 m Height of instrument at A = 1.000 m Reading of staff at B = 1.800 m Distance AB = 500 m The RL of B (in m) is

The cuvature and refraction effects are taken into account in the following case: Level is set-up over A and the staff is held at B. R.L. of A = 150.000 m Height of instrument at A = 1.000 m Reading of staff at B = 1.800 m Distance AB = 500 m The RL of B (in m) is

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.

Question

The cuvature and refraction effects are taken
into account in the following case:
Level is set-up over A and the staff is held at
B.
R.L. of A = 150.000 m
Height of instrument at A = 1.000 m
Reading of staff at B = 1.800 m
Distance AB = 500 m
:
The RL of B (in m) is

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