Activity 4 - Three-wire LevelingI.Discussion of TheoryII.Data and ResultsA transit with stadia interval factor of 100.8 was set up at point C on the linebetween points A and B. The following readings were observed:HAIR READINGSRODVERTICAL ANGLEUPPER1.9721.330MIDDLE1.8541.175LOWERAB+15-25|-09-071.7321.010If the distance from the instrument to the focus is 0.38m, determine the following:a) Horizontal distance between A and B.b) Difference in elevation between A and B.

The horizontal and vertical distance for when line of sight is along angle of elevation/depression…

I. Discussion of Theory Data and Results I. A transit with stadia interval factor of 100.8 was set up at point Con the line between points A and B. The following readings were observed: HAIR READINGS ROD VERTICAL ANGLE UPPER A B +15-25 -09-07 1.972 1.330 MIDDLE 1.854 1.175 LOWER 1.732 1.010 If the distance from the instrument to the focus is 0.38m, determine the following: a) Horizontal distance between A and B. b) Difference in elevation between A and B.

I. Discussion of Theory Data and Results I. A transit with stadia interval factor of 100.8 was set up at point Con the line between points A and B. The following readings were observed: HAIR READINGS ROD VERTICAL ANGLE UPPER A B +15-25 -09-07 1.972 1.330 MIDDLE 1.854 1.175 LOWER 1.732 1.010 If the distance from the instrument to the focus is 0.38m, determine the following: a) Horizontal distance between A and B. b) Difference in elevation between A and B.

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

Instruments for Surveying

Surveying is the practice that determines the relative three-dimensional positions of many different points on the earth’s surface. There are various instruments used in Surveying like Theodolites, Total station, Tripod stands, Plane table, etc. for measuring horizontal angle, vertical and sloping angle, which are very useful for giving accurate and precise measurement.

Question

Activity 4 - Three-wire Leveling
I.
Discussion of Theory
II.
Data and Results
A transit with stadia interval factor of 100.8 was set up at point C on the line
between points A and B. The following readings were observed:
HAIR READINGS
ROD
VERTICAL ANGLE
UPPER
1.972
1.330
MIDDLE
1.854
1.175
LOWER
A
B
+15-25
|-09-07
1.732
1.010
If the distance from the instrument to the focus is 0.38m, determine the following:
a) Horizontal distance between A and B.
b) Difference in elevation between A and B.

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A transit with a stadia interval factor of 100.12 was set at C on the line between points A and B, the following stadia readings were observed. (draw the Instrument set up) Stadia Hair Readings (m) Rod Position Vertical Angle Upper (a) Middle (c) Lower (b) Rod Held at A - 50 17' 1.318 1.148 0.978 Rod Held at B + 2° 21' 2.048 1.882 1.355 If the stadia constant is 0.29 m determine the following: A. Length of line AB (horizontal). ANSWER: B. If the elevation at B is 76.751m what is the elevation at A. ANSWER:
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