A staff is placed on a benchmark (BM) of reduced level (RL) 100.000 m and a theodolite is placed at a horizontal distance of 50 m from the BM to measure the vertical angles. The measured vertical angles from the horizontal at the staff readings of 0.400 m and 2.400 m are found to be the same. Taking the height of the instrument as 1.400 m, the RL (in m) of the theodolite station is

A staff is placed on a benchmark (BM) of reduced level (RL) 100.000 m and a theodolite is placed at a horizontal distance of 50 m from the BM to measure the vertical angles. The measured vertical angles from the horizontal at the staff readings of 0.400 m and 2.400 m are found to be the same. Taking the height of the instrument as 1.400 m, the RL (in m) of the theodolite station is

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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PROBLEM 2 IN A STADIA SURVEY CONDUCTED IN A HILLY AREA SOMEWHERE IN VISAYAS, A THEODOLITE WAS PLACED BETWEEN TWo STATIONS (A AND B) WITH DIFFERENT ELEVATIONS AND THE NEEDED VALUES WAS MEASURED AND TABULATED BELOW. THE INSTRUMENT THAT WAS USED HAS STADIA CONSTANT OF 0.30M AND ITS STADIA INTERVAL FACTOR IS 100. IF THE HEIGHT OF THE INSTRUMENT DURING MEASUREMENT IS 1.45M, DETERMINE THE FOLLOWING: ROD READING LOWER HAIR UPPER HAIR ROD POSITION VERTICAL ANGLE (m) READINGS (m) READINGS (m) STATION A + 120 155 1187 1.913 STATION B -19° 1.20 0.938 1.452 A HORIZONTAL DISTANCE BETWEEN THE INSTRUMENT AND STA. A B. HORIZONTAL DISTANCE BETWEEN STA. A AND STA. B DIFFERENCE IN ELEVATION BETWEEN THE LOCATION OF INSTRUMENT AND STA. B D. DIFFERENCE IN ELEVATION BETWEEN STA. A AND STA. B E. IF STA. A HAS AN ELEVATION OF 323.50 M ABOVE SEA LEVEL, WHAT IS THE ELEVATION OF STA. B? C.
How can you get the pan encircled below? weight of sample = 1250g
So, he wittingly set up a theodolite at point A, where angle BAD is exactly 90°, and he used stadia to measure the distance between points A and F, the center of the square lot BCED. The upper and lower hair readings were1.20 m and 0.92 m, respectively. The stadia interval factor (K) is known to be 101.0152545 and the instrument constant (C) is zero. He then set up the same instrument at point A and used a 2-meter subtense bar at point D to find the distance between points A and D. The subtended angle was read as 3°49'5.9". Using the computed distances of AF and AD, what is the area of the square BCED? (Round your final answer to 6 decimal places, if necessary.) The area of the square lot BCED is m?.
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A traverse line AB is being measured by a theodolite and substense bar. At station A, the horizontal axis of the theodolite is 2.87m above the ground mark and the horizontal angle subtended by a 2-meter substense bar set up at a station B is 3°. The substense bar is 1.35m above the ground mark and the vertical angle measured to it on the theodolite is 21°. Determine the difference in elevation between the two ground station marks.
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