I want the solution very quickly within 15 minutes Q3: The ground level of irrigation project is measured at (100x) points out of 1500points. It is found that the mean of the levels equal to 26.59m. If the standarddeviation of ground surface is 2.45m, find the interval of 95% confidence of theground surface level of this project (with and without replacement). How many ofelevations required to measure that gives an error not more than (0.4m) with 95%confidence.X=0.74

Given Data: The mean of the level is X¯=26.59 m The standard deviation of the ground surface is…

Answered: Q3: The ground level of iigation…

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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Solve by Rise and fall method Ques- The following consecutive readings were taken with dumpy level and 4 m levelling staff on continuously sloping ground at a common interval of 30 m. 0.585 on A, 0.936, 1.953, 2.846, 3.644, 3.938, 0.962, 1.035, 1.689, 2.534, 3.844, 0.956, 1.579, 3.016 on B. The elevation of A was 520.450 m. (a) Enter the readings in level book. (b) Calculate R.L. of all the points by rise - fall method. (c) Apply usual arithmetical checks. (d) Determine the gradient of line AB.
To meet a third leveling accuracy, the maximum misclosure of a level run of 4000 meters should be A. 12 mm B. 24 mm C. 1.2 m D. 2.4 m
SURVEYING Given the following differential level notes: STA BS FS BM1 1.73 - TP1 2.5 3.8 TP2 2.75 1.7 BM2 3.15 3.32 TP3 2.45 3.22 TP4 3.9 2.5 TP5 2.78 3.02 BM3 - 1.77 Base on the differential leveling of note in the previous problem, if the elevation of TP3 = 267.28 m, determine the elevation of BM1
The ground level of irrigation project is measured at (100X) points out of 1500 points. It is found that the mean of the levels equal to 26.59m. If the standard deviation of ground surface is 2.45m, find the interval of 95% confidence of the ground surface level of this project (with and without replacement). How many of elevations required to measure that gives an error not more than (0.4m) with 95% confidence. X=0.74
Reciprocal levelling is done to test a dumpy level, along a chain line, at a common interval of 15m, starting at 135 m. The following records have been observed with the instrument shifts at distances of 180 m and 240 m: 3.400, 2.315, 1.350, 0.755, 3.305, 2.880, 1.745, 1.470, 1.910, 1.355, 2.450 and 3.035 m Calculate the reduced levels at all the points and check for mathematical errors, assuming RL = 97.935 m is the bench mark reading at the first station. Use both a) the rise and fall method, and b) the height of collimation method.
During the dumpy level test, the observations are as follows:Staff reading stationAInstrument placedB2.2353.545AB1.6052.564Distance between A and B is 250 m and R.L of A is 435.062 m, Find the R.L of B.
Q1) In an open, tight settlement process for a specific project, the following readings were taken starting from the leveling figure of the level (244.664 m) and the readings were as follows: 3.45, 4.05, 2.08, 2.45, 2.12, 2.725, 2.74, 1.74, 2.315, 1.375, 1.825, 1.355 2.095, 2.205, 1.455 Note that the leveling device has been moved after the second, fifth, ninth and thirteenth reading.
The following consecutive readings were taken with a level on continuously sloping ground at a common interval of 20 m. The last station has an elevation of 155.272 m. Rule out a page of level book and enter the readings. Calculate (a) the reduced levels of the points by rise and fall method, and (b) the gradient of the line joining the first and last points. 0.420, 1.115, 2.265, 2.900, 3.615, 0.535, 1.470, 2.815, 3.505, 4.445, 0.605, 1.925, 2.885.
In the two-peg test of a dumpy level the following observations were taken: with level setup near A, observed readings are a=1.855 m and b=1.434 m; with level setup near B, c=1.790 m and d=2.211 m. Determine the correct reading on the rod held at A with the instrument still in the same position at B for a horizontal line of sight.
A dumpy level with an internal focusing telescope was set up on the left bank of the river and the rod readings tabulated below were taken on a stadia rod held successively at the left and right water edges. If the stadia interval factor is 100, determine the width of the river. Draw the diagram
In order to transfer reduced level across a canyon, a reciprocal leveling campaign was conducted. Simultaneous readings were observed using two levels on at each side of the canyon. Each of the levels are having same magnifying power and sensitiveness of level tube. With instruments interchanged during leveling operation yielded the following average readings. Instrument Station Average near readings, (m) Average distance readings(m) R.L of X=101.345m Distance, XY=1.025Km X 1.780 2.345 y 2.435 1.870 Find out the R.L of unknown point. Comment on the errors associated with observations.
A transit with stadia interval factor of 100.80 was set up at point C on the line between points A and B. The following readings were observed: If the stadia constant is 0.318m, determine difference in elevation between points A and B.

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