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An engineer sets up a transit at a point inside a triangular lot and observes the bearings and distances of the corners A, B, and C of the lot as follows: Compute the area of the triangular lot.

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

An engineer sets up a transit at a point inside a triangular lot and observes the bearings and distances of the corners A, B, and C of the lot as follows: Compute the area of the triangular lot.

Bearings
N 35° W
N 70° E
Due South
Distances
17 m
22 m
32 m
Corners
A
C

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St. No. A B al C D E F G H A series levelling had been down along the centre line of the proposed road the distance between each two points (100m). If the elevation of the points A, E and H after completing the project should be 31m, 30m, and 31.5m respectively and these three points connected with straight lines having uniform gradient. Calculate the depth of .cut and fill for the points C and G BS 1.25 1.78 1.91 IS 2.18 1.86 1.61 1.43 FS 1.93 1.27 2.7 Remark B.M-30.09 -0.57m, 0.48m -1.63m, -1.45m 0.54m, -1.37m -1.96m, -0.88m -1.73m, -1.92m -0.97m, -0.48m