Q: Using a digital laser level instrument, the following staff readings were observed via an open loop data collection method 1. 2. TBM 1 49.873 m 3. 4. 5. 2.191 2.505 TBM 1 A S1 2.325 B 1.496 3.019 C 2.513 1.752 2.811 S3 11XZZATS TBM 2 3.824 Insert correctly the data onto the calculation table with their remarks, and calculate the reduced levels for each point using the rise and fall method, then answer the following questions What is the R.L value for TBM 2? How many data checking processes are performed for Rise and Fall method? Perform the data checking and find the value. What is the allowable error for this job in millimetres? How many change points were made during the data collection process? TBM 2

Q: Using a digital laser level instrument, the following staff readings were observed via an open loop data collection method 1. 2. TBM 1 49.873 m 3. 4. 5. 2.191 2.505 TBM 1 A S1 2.325 B 1.496 3.019 C 2.513 1.752 2.811 S3 11XZZATS TBM 2 3.824 Insert correctly the data onto the calculation table with their remarks, and calculate the reduced levels for each point using the rise and fall method, then answer the following questions What is the R.L value for TBM 2? How many data checking processes are performed for Rise and Fall method? Perform the data checking and find the value. What is the allowable error for this job in millimetres? How many change points were made during the data collection process? TBM 2

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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If an EDM instrument has a purported accuracy capability of ± (11.5 mm + 2ppm2), what error can be expected in a measured distance of (a) 25 m, (b) 483.40 ft,(c) 387.563 m? (Assume that the instrument and target miscentering errors are equal to zero.)
In the two-peg of a dummy level, the following observation are taken. Rod Reading on A Rod Reading on B INSTRUMENT SET UP NEAR A 3.463 0.821 INSTRUMENT SET UP NEAR B 4.125 1.307 What is the difference in elevation between A and B? If the line of sight is not in adjustment, determine the correct rod reading on A with the instrument still set up at B. If the line of sight is not in adjustment, determine the correct rod reading on B with the instrument still set up at A.
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BSGE students of Caraga State University conducted a rectangular traverse. The angles were observed using a Transit with 4 repetitions each. The distances were observed using a steel tape. The observed values of distances and their standard deviations are as follows: Standard Occupied Sighted Distance Station (m.) Deviation Station (m.) A В 123.28 + 0.03 В 207.17 ± 0.02 C D 121.22 + 0.02 D A 207.24 ± 0.04 The observed values of interior angles and their standard deviations are as follows: Standard Deviation (in seconds ) Backsight Occuppied Foresight Angle D A В 89.20687 ±41 A В C 90.239 +7 B 90.36119 +1 D A 90.20046 +26 What is the angular misclosure at a 95%, confidence level?
Problem 1 Based on the following survey data an angle is measured repeatedly using the same equipment and procedure. If the probability of error is 50%, determine (a) the most probable angle and (b) its relative precision; Trials Measurements 1234567 2 4 5 7 162°20'00" 162°21'20" 162°21'40" 162°20'40" 162°19'40" 162°21'25" 162°22'10"
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