1. Three Hills A, B and C has elevations of 660m, 625m, and 600m respectively. B isin between A and C, and is 10km from A and 12 km from C. (30 points)a. Considering the effect of curvature and refraction correction, what is theclearance or obstruction of the line of sight at B considering that C is visiblefrom A.b. If a 5 m tower is erected on top of B, what would be the height of equal towersto be erected at A and C in order that A, B and C will be intervisible.c. What should be the height of tower to be erected at C so that B and C will beintervisible from A.

Given :- Elevation of hill A = 660m Elevation of hill B=625m Elevation of hill C=600m AB= 10km BC=…

Answered: 1. Three Hills A, B and C has…

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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Take note height of the tank is 32.0 m high.
Problem 4. Point A is in between points B and C, the distances of B and C from B and C from point A are 1000m and 2000m respectively measured from point A. The angle of elevation of point B is 18°13' while that of C as Ø. The difference in the elevation of B and C is 44.4m. Considering the effects of curvature and refraction, what is the value of Ø? (Note: Assume that point C is higher) where: Earth's Curvature and Atmospheric Refraction Correction (Her): Her(m) = 0.067 K² K (km) = level distance Her K Vertical line Horizontal line Level line
Q2: The level is setup at 20 m from point A and 200 m from point B. The staff reading at point A is 2.3157, then the staff is putting in inverse situation on point B that lie on the lower surface of a bridge and the staff reading at point B is 3.6723. Find the difference in level between the two points taking into account the effect of curvature and refraction.
I need the answer as soon as possible
The combined correction due to curvature and refraction (in m) for a distance of 2 km is:
Four hills A, B, C and D are in straight line. The elevations are A = 247 m, B = 236 m, C = 314 m D = 396 m respectively. The distances of B, C and D from A are 12 km, 45 km and 60km respectively. Considering the effect of curvature and refraction of the earth. (a) Compute the height of equal towers on A and D to sight over B and C with a 3 m clearance.(b) Compute the elevation of the line of sight at B with the installation of equal heights of tower at A and D.(c) Compute the height of tower at A with a clearance of 3 m at C so that D will be visible from A, if the height of tower at D is 2 m.
situation 1] From an instrument set up at point A, the angle of elevation of point B is +16 81' while point C is +7°41'. Furthermore, it was found out that the difference in elevation between points B and C considđering the effect of earth's curvature and refraction is 11..983 m. Point A is in between B and C. If c is 1951 meters from A. how far is B from A? If the elevation of point A is 1905.342 m above mean sea level, what is the elevation of B? : What is the elevation of C? ii. iii.
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.
Please answer this NEATLY, COMPLETELY and EXPLAIN step by step
Compute the refraction error for a distance 1956.4 m. Answer: Choose...
5.A fishing vessel with a green light on its deck, 10.5m above the water, disappears from the sight of a man on shore whose eye level measures 1.60 m above the water. Determine the distance between the vessel and the man considering the effect of earth's curvature and atmospheric refraction. a) 15.45km b) 16.67m c) 17.34km d) 13,56km

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