2. A reciprocal leveling is observed across a wide river and the reciprocal level readings were taken between points A and B as follows. With instrument set up near A, the rod readings on A are 4.383 m and 4.395 m. The reciprocal level readings on the opposite side of the river at point B are 5.628, 5.619, and 5.622 m. With the instrument set up near B the rod readings on B are 6.578 m and 6.576 m, and the rod readings on the on the opposite side of the river at point A, the rod readings are 5.243, 5.248, and 5.186 m. a) Compute the difference in elevation between A and B with the instrument set up near B. b) What is the true difference in elevation between A and B? c) If the elevation B is 500 m, what is the elevation of A?

2. A reciprocal leveling is observed across a wide river and the reciprocal level readings were taken between points A and B as follows. With instrument set up near A, the rod readings on A are 4.383 m and 4.395 m. The reciprocal level readings on the opposite side of the river at point B are 5.628, 5.619, and 5.622 m. With the instrument set up near B the rod readings on B are 6.578 m and 6.576 m, and the rod readings on the on the opposite side of the river at point A, the rod readings are 5.243, 5.248, and 5.186 m. a) Compute the difference in elevation between A and B with the instrument set up near B. b) What is the true difference in elevation between A and B? c) If the elevation B is 500 m, what is the elevation of A?

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

In the reciprocal leveling field note, the following observations are shown on the table. If the elevation of B is 487.50m, find the elevation of B The difference in elevation between A & B when the instrument still set up near A is The true difference in elevation between A & B is
A level line from P to Q is carried out to and fro direct leveling, and the height difference of the forward measurement is 12.380 meters, and the height difference of the back measurement is 12.411 meters. It is also known that the closed difference limit value of the previous test and the back test K is 20 mm (K is the number of kilometers), the forward measuring level is 4.2 kilometers long, and the back measuring level is 3.5 kilometers long. Try to find the average elevation difference from P to Q, and whether the round-trip test results meet the regulations, and please explain your answer.
A reciprocal leveling is observed across a wide river and the reciprocal level readings were taken between points A and B as follows. With instrument set up near A, the rod readings are 3.411m and 3.414 m. The reciprocal level readings on the opposite side of the river at point B arev 4.281, 4.284, 4.283 and 4.285m. With the instrument set up near B the rod readings on the opposite side of the river at point A, the rod readings are 3.153, 3.150, 3.156 and 3.154. a. Compute the difference in elevation between A and B with the instrument setup near A. b. If the elevation A is 100m, what is the elevation at B?
In the two-peg test of a dummy level, the following observations are taken. On point A On point B INSTRUMENT SET UP at M 2.682 1.239 INSTRUMENT SET UP at P 1.876 0.565 Point M is equidistance from both A and B with 92 meters, while P is 2.50m away from A along the extension of line AB. Requirements: Determine the true difference in elevation between point A and B. With the level still set up at P, determine the rod reading on A and B to which the line of sight should be adjusted. If the instrument needs to be adjusted, determine the following false difference in elevation inclination of the line of sight and the error in the reading of far rod A and B instrument set up at P.
RECIPROCAL LEVELING. In reciprocal leveling across a deep ravine the following sets of rod readings were takent: Instr Near A: BS on A=1.719 m, Average Fs on B=2.578 m Instr Near B: Average BS on A=1.335 m, FS n B=2.176 m Point A is on one side of the ravine and has a known éle- vation of 197.428 m. Point B is on the other side. Deter- mine the elevation of point B.
Reciprocal leveling gives the following readings in meters from a setup near A: on A, 1.365; on B, 4.928, 4.924, and 4.926. At the setup near B: on B, 4.251; on A,1.687, 1.688, and 1.688. The elevation of A is 564.872 m. Determine the disclosure and elevation of B.
- In reciprocal leveling across a deep ravine the following sets of rod readings were taken: Instrument set-up near A : BS on A = 1.719m, FS on B = 2.578m Instrument set-up near B : BS on A = 1.335m, FS on B = 2.176m Point A has a known elevation of 197.428m. Determine the elevation of point B.
Situation 1: A two-peg test is used to check whether the ine of sight of the level is in perfect adjustment and the following rod readings are taken, with instrument set up near A, backsight on A is 1.623 m. and foresight reading on B is 2.875 m. With the instrument set up near B, backsight on B is 1.622 and a foresight on A is 0.362 m. a. Find the difference in elevation. b. What should be the correct rod reading on A to give a level line of sight with instrument still set up near B? c. What should be the correct rod reading on B to give a level line of sight with instrument still set up near A?
The top of the dam have been regularly monitored with a total station for possible movement and or settlement. Investigate if there ismovement and or settlement on top of the dam using the provided data and illustrations. Refer to the figures below. The elevation of the point where the instrument was set-up is 435.675 m. a. Calculate the ground elevation at the top of the dam on October 9, 2020 and on April 24, 2021 considering the effect of curvature and atmospheric refraction. b. Calculate determine the horizontal distance between the total station and the reflector on October 9, 2020 and on April 24, 2021. c. Investigate if there is movement at the dam.
1. A tachometric surveying was conducted to obtain some readings for inaccessible points, where it was found that the multiplying and additive constants are 98 and 0.1, respectively. The instrument was setup at point C and the readings listed in the table were taken while the staff was held vertically. Calculate the horizontal distance between BM and station D. Also, calculate the reduced level of station D. Figure 1 shows a schematic view of the site. 2. Describe a practical procedure to measure the height of your house using tachometric surveying, list the procedure in bullet points.
From the given data of differential leveling as shown in the tabulation: Find the difference in elevation of station 7 and station 5: pls answer in complete solution. pls answer in 2 DECIMAL PLACES
Question 49 In leveling across a river, reciprocal level readings were taken between two points A and B. From a set up near A: on A, 0.994 and 0.992 m; on B 2,076, 2.077, 2.078 and 2.077 m. At the set up near B: on H, 2.550 and 2.548m; on A, 1.462, 1.463, 1.464 and 1.463. From the observed data it can be determine that A. B is 1.085 m below A B. B is 1.085 m above A C. A is above B by 1.088 m D. A is below B by 1.084 m E. A and B are of the same elevation