Determine the reduced level of B. The level was set up at a point in the middle of A and B gives the backsight reading on A as 1.305 m and the foresight on B as 2.650 m. Given that the reduced level of A is +100 m. Give the answers with a schematic figure

Determine the reduced level of B. The level was set up at a point in the middle of A and B gives the backsight reading on A as 1.305 m and the foresight on B as 2.650 m. Given that the reduced level of A is +100 m. Give the answers with a schematic figure

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.

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1. Determine the reduced level of B. The level was set up at a point in the middle of A
and B gives the backsight reading on A as 1.305 m and the foresight on B as 2.650 m.
Given that the reduced level of A is +100 m. Give the answers with a schematic figure .

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QUESTION 1 A line of level 5 km long is run between BM1 and BM2 with an average backsight and foresight distances of of 227 and 229 meters, respectively. The average backsight reading is 1.99 meters and every time it is taken the rod is inclined backward from the vertical by 4.9°. What should be the corrected elevation of BM2, if its recorded elevation is 124 meters? NOTE: Answer in two decimal places