2) (i) To determine the elevation of the top of a chimney the following observations were made: Station Reading on B.M. Angle of elevation P 2.870 28°42′ Q 3.750 18°06' The top of the chimney and the stations P and Q are in the same vertical plane, PQ is 100 m. If the R.L. of the B.M. is 100.000 m, determine the elevation of the top of chimney. CO that show:

2) (i) To determine the elevation of the top of a chimney the following observations were made: Station Reading on B.M. Angle of elevation P 2.870 28°42′ Q 3.750 18°06' The top of the chimney and the stations P and Q are in the same vertical plane, PQ is 100 m. If the R.L. of the B.M. is 100.000 m, determine the elevation of the top of chimney. CO that show:

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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The following level notes for the determination of BM#2 do not check. The elevation of BM#1 and the rod readings are correct. Determine the corrected elevation of BM#2. STA B.S. H.I. F.S. ELEV. BM 1 6.72 127.36 120.64 TP 1 12.43 138.55 1.24 126.12 ТР 2 2.65 140.09 1.11 137.44 TP 3 0.54 132.59 8.04 132.05 ТР 4 4.27 124.55 12.31 120.28 BM 2 3.02 121.33
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6) The top(T) of a radio transmission tower was sighted from two small hill tops A and B which were in line with T. the angle of elevation from A to the top of tower was 38°21' and that from B to the top of tower was 21°18'. The angle of elevation from B to a target 3 m above the ground level at A was 14°56', The heights of the theodolite at A and B were 1.80 m and 1.50 m respectively. The horizontal distance between A and B was 150m and the reduced level of B was 121.50m. Calculate the RL of the top of the tower and the horizontal distance from A to the tower.
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