The top of a tower signal at B 2000m away from A was sighted through a transit with recorded vertical angle of 3030'. The height of the mast is 12m and the HI of the transit above the point where it is set is 1.10m. The elevation of thepoint under the transit A is 133.3m. Compute the elevation of the base of the signal B.

Elevation: A geographic location's elevation is its altitude above or below a fixed point of…

Answered: The top of a tower signal at B 2000m…

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 top of a tower signal at B 2000 m away from A was sighted through a transit with recorded vertical angle of 2°30'. The height of the mast is 12 m and the H.I. of the transit above the point where it is set is 1.10 m. The elevation of the point under the transit A is 133.30 m. Compute the elevation of the base of the signal В.
The top of the tower signal at B 2000 m away from A was sighted through a transit with a recorded vertical angle of 3° 30”. The height of the mast is 12 m and H.I.ofthe transit above the point where it is set is 1.10m. The elevation of the point under the transit A is 133.33 m. Compute the elevation of the base of the signal B. Ps. with solution, please.
Find the equal height of towers at triangulation stations A and C so that line AC will clear theelevated ground between A and C by 6m. with the instrument set at point B, the observedvertical angle to ground station A is 0 0 55’ and the vertical angle to ground station C is 0 0 48’.Elevation of A is 237m. Distance AB is 10km and distance of BC is 8.7km. Yhe instrument set-upat B is 2.7m above the ground. Use hcr= 0.067k ^2
12. The top of a mast signal 2000m away was sighted through a transit with recorded vertical angle of 4 deg. 10 min. the height of the mast is 6m and the HI of the transit above the point where it is set is 1.2m. The elevation of the base of the signal B is 171.17m. Compute the elevation of the point under the transit A with due allowance for curvature and refraction correction.
The top of the tower signal at B, 2000m away from A was sighted through a transit with a recorded vertical angle of +3°30'. The height of the tower is 12m and the H.I. of the transit above point where it is set is 1.10m. 1. Determine the difference in Elevation between A and B. 2. If the elevation of the point under the transit at A is 133.33m. Compute the elevation of the base of the tower at B. 3. How high is the base of the tower to the base of the transit?
Q- In a leveling work, sum of the Back Sight (B.S.) and Fore Sight (F.S.) have been found to be 3.085 m and 5.645 m respectively. If the Reduced Level (R.L.) of the starting station is 100.000 m, the R.L. (in m) of the last station is
A tall tower was photographed from an elevation of foom above the datum. The radial distance of the top & bottom of the tower from principal points in the photograph are 112-5 mm & 82.4mm. If bottom of towes is at an elevation 250m above the dation then beight of the tower would be
2. INTERVISIBILITY OF STATIONS. Cathedral Hill is on a line between Constable Hill and Aurora Hill. Cathedral Hill is 6.253km from the Constable Hill and Aurora Hill is 11.081km from the Constable Hill. The elevation of the hills are: Constable Hill, 1260.86m; Aurora Hill, 1266.44m; and Cathedral Hill, 1261.04m. Determine the following: a. Elevation of the line of sight from Constable Hill at the vicinity of Cathedral Hill. b. Height of identical towers to be constructed at Constable Hill and Aurora Hill so that the line of sight will clear Cathedral Hill by 5.0m c. Height of tower to be constructed on Constable Hill so that the line of sight will clear the ground at Cathedral Hill by 5.0m if no tower is to be constructed on Aurora Hill. d. Height of the tower to be constructed on Aurora Hill so that the line of sight will clear the ground at Cathedral Hill by 5.0m, if now tower is to be constructed on Constable Hill.
A stadia rod held at point B was observed from station A (elev A = 210.70m) using an automatic level. The rod reading at point B was taken to be 2.31m. If the height of set up of instrument at point A was 1.22m, determine the elevation of point B. Select the correct response: 208.45m 210.56m 207.23m 209.61m 0 00
In a leveling work, sum of the Back Sight (B.S.) and Fore Sight (F.S.) have been found to be 3.085 m and 5.645 m respectively. If the Reduced Level (R.L.) of the starting station is 100.000 m, the R.L. (in m) of the last station is
Following observations were taken for determining the R.L. of station A. Instrument -station Height of Staff instrument station Vertical angle Staff readings Remark Q 1.600 m B.M. Q 1.600 m P +6°12' -4°12' 0.945, 1.675, 2.405 R.L. of B.M. = 421.625 1.450, 2.380, 3.310 A 1.650 m P +7°0' 'X', 0.655, 1.255 Reading 'X' could not be observed The instrument was fitted with an anallactic lens, and the value of constant was 100.00. Calculate the R.L. of station A.
The top of a tower signal at B 2000 m from A away was sighted through a transit with recorded vertical angle of 2deg30’. The height of the mast is 12 m and the HI of the transit above the point where it is set is 1.10 m. The elevation of the point under the transit A is 133.3 m. Compute the elevation of the base of the signal B. Consider the effects of curvature and refraction.

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