6. From a two inaccessible but intervisible points A and B, the angles to two triangulation stations C and D were observed as follows: Line CD has a distance of 500m. Iong. Compute the distance of the line AB. Angle CAB = 79°30' Angle DAB = 28°30' Angle DBC = 31°30' Angle DBA = 84°30' a) 536.48m. b) 563.84m. c) 535.68m. d) 538.46m.

6. From a two inaccessible but intervisible points A and B, the angles to two triangulation stations C and D were observed as follows: Line CD has a distance of 500m. Iong. Compute the distance of the line AB. Angle CAB = 79°30' Angle DAB = 28°30' Angle DBC = 31°30' Angle DBA = 84°30' a) 536.48m. b) 563.84m. c) 535.68m. d) 538.46m.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

From the two inaccessible but intervisible points A and B, the angles to two triangulation stations C and D were observed as follows. Line CD has a distance of 500m long. Compute the distance of the line AB. Angle САВ 79° 30' DAB 28° 30' DBC 31° 30' DBA 84° 30' D 31°30' 79°30' 28°30' 84°30' A В Hint: Assume AB =1 unit and solve for CD. By ratio and proportion between AB and CD gives the actual value of AB in meters.
The DMD of the line BC is equal to426.20. The departure of the line AB is 117.56m. What is then the departure of line BC? a. 156.87 m c. 141.24 mb. 191.08 m d. 123.45 m
Q4: From the figure below find the azimuth for each leg, then esimate the allowable angular error. 270° 67 310° 16 120° 0 6 19 AZIMUTH MARK STATION A NORTHING 740.79 EASTING - 5497.53 313 28
1. Answer all questions. 1.1 What is the azimuth of line AB in Table 1.1. Table 1.1. Station N, m A B E, m 1.0000 1.0000 -1.0000 2.0000
Convert N25deg25minW to an equivalent azimuth with illustration.
ANGLE TO THE RIGHT TRAVERSE. A five-sided closed tra- verse proceeds in a clockwise direction and the angle to the right at each station were observed as follows: A=270° 45', B=268° 43', C=20322', D=256°20', and E=260° 25 Determine the error in the sum of the anglesAdjust angular values observed on the assumption that the error is the same for each angle. Tabulate all observed and adjusted values accordingly.
A photogrammetric survey makes use of photographs taken with specially designed cameras either from a. the ground surface or underwater b. airplanes or ground stations c. a ship or an elevated ground station Magnetic bearing of a line in 1900 S 78° 30' E and declination is 2° E. At present the declination is 1° 30' W, find the present bearing of the line. a. S67° E b. S71° E c. S75° E Surveying is defined as the art and science of determining angular and linear measurements to establish the form, extent, and relative position of points, lines, and areas on or near the surface of the earth or on other extra terrestrial bodies through a. applied mathematics and the use of specialized equipment and techniques b. pure mathematics and the social sciences c. principles of algebra and geometry O
SITUATION III: A closed traverse has the following Data. LINE BEARING DISTANCE AB S 15°36'W 24.22m ВС N 69°11'E 15.92m CD N 57°58'E DA S 80°43'W 6. Find the distance of line DA. a. 77 m b. 79 m c. 75 m d. 73 m 7. Find the distance of line CD. a. 75.56 m b. 77.45 c. 76.33 d. 78.21
5. ANGLE To THE RIGHT TRAVERSE. A five-sided closed tra- proceeds in a clockwise direction and the angle to verse the right at each station were observed as follows; A=270° 45', B=268° 43', C=203° 22', D=256° 20', and E=260° 25'. Determine the error in the sum of the angles. Adjust the angular values observed on the assumption that the error is the same for each angle. Tabulate all observed and ad'justed values accordingly. 550 PROBLEM SETS
A is a point having an elevation of 125.64 m., B and C are points of unknown elevation, B is in between A andC. By means of an instrument set 1.45 m above B, vertical angles are observed, that to A being an angle of-14º45' and that to C being an angle of +8º32'. The horizontal distance AB is 547.20 and the horizontaldistance BC is 923.43 m. Making due allowance for earth’s curvature and atmospheric refraction, computethe difference in elevation between A and B.
17.The height of a tower was determined by trigonometric leveling. The instrument was set up at point A, a distance of 75m from the base of the tower. The height ofinstrument set up was measured to be 1.22m. The top of the tower was observed at an angle of + 35o22’. Calculate the height of tower.
The angles about a point R have the following observed values. A = 120°5’ 20”, B = 132°27’30”, and C = 107°27’40”. Determine the adjusted measured angle A by assuming that the error is the same for each angle. a.130°15’ 30” b. 120°5’ 30” c. 130°15’ 10” d. 120°5’ 10” e. not listed