The following consecutive staff readings were taken with level and 5m staff at 70 minterval. The level has been changed after third, sixth and tenth readings, theelevation of first point and last point are (80 m and 84.96m) respectively. Readingsare as follows:B's65(1.25, 2.18, 2.05, 3.12, 1.57, 1.82, 1.47, 1.15, 1.95, 2.08, 2.08, 4.22, 3.1, 3.5, -3)1- Find elevation of all points by the height of instrument method and applyappropriate check.2-Determine the loop closure and adjust the calculated value of the elevations on thebasis of the distance covered.

Given, Elevation at first point and last point= 80m and 84.96m

The following consecutive staff readings were taken with level and 5m staff at 70 m interval. The level has been changed after third, sixth and tenth readings, the elevation of first point and last point are (80 m and 84.96m) respectively. Readings are as follows: BS B's (1.25, 2.18, 2.05, 3.12, 1.57. 1.82, 1.47, 1.15, 1.95, 2.08, 2.08, 4.22, 3.1, 3.5, -3) 1- Find elevation of all points by the height of instrument method and apply appropriate check. 2-Determine the loop closure and adjust the calculated value of the elevations on the basis of the distance covered.

The following consecutive staff readings were taken with level and 5m staff at 70 m interval. The level has been changed after third, sixth and tenth readings, the elevation of first point and last point are (80 m and 84.96m) respectively. Readings are as follows: BS B's (1.25, 2.18, 2.05, 3.12, 1.57. 1.82, 1.47, 1.15, 1.95, 2.08, 2.08, 4.22, 3.1, 3.5, -3) 1- Find elevation of all points by the height of instrument method and apply appropriate check. 2-Determine the loop closure and adjust the calculated value of the elevations on the basis of the distance covered.

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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Concept explainers

Errors in surveying

An error in surveying is defined as the difference between two or more values of an identical quantity. However, the estimates are never accurate and there will always be a degree of variability regardless of the research tool or method used. These differences are known as errors that need to be reduced or eliminated to maintain certain levels of accuracy. Even if you carefully follow the prescribed test procedures, the considerations may contain errors.

Question

The following consecutive staff readings were taken with level and 5m staff at 70 m
interval. The level has been changed after third, sixth and tenth readings, the
elevation of first point and last point are (80 m and 84.96m) respectively. Readings
are as follows:
B's
65
(1.25, 2.18, 2.05, 3.12, 1.57, 1.82, 1.47, 1.15, 1.95, 2.08, 2.08, 4.22, 3.1, 3.5, -3)
1- Find elevation of all points by the height of instrument method and apply
appropriate check.
2-Determine the loop closure and adjust the calculated value of the elevations on the
basis of the distance covered.

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