In the two-peg of a dummy level, the following observation are taken. What is the difference in elevation between A and B? Answer: ____________ If the line of sight is not in adjustment, determine the correct rod reading on B with the instrument still set up at A. Answer: ____________ In the two-peg of a dummy level, the following observation are taken.INSTRUMENT SET UP NEAR AINSTRUMENT SET UP NEAR BRod Reading on A0.9210.367Rod Reading on B1.4300.768a. What is the difference in elevation between A and B? Answer:b. If the line of sight is not in adjustment, determine the correct rod reading on B with theinstrument still set up at A. Answer:

Answered: Image /qna-images/answer/f994b4f4-a3ce-4dc7-aa54-8450eda9b95b.jpg

In the two-peg of a dummy level, the following observation are taken. What is the difference in elevation between A and B? Answer: ____________ If the line of sight is not in adjustment, determine the correct rod reading on B with the instrument still set up at A. Answer: ____________

In the two-peg of a dummy level, the following observation are taken. What is the difference in elevation between A and B? Answer: If the line of sight is not in adjustment, determine the correct rod reading on B with the instrument still set up at A. Answer:

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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Question

In the two-peg of a dummy level, the following observation are taken.

What is the difference in elevation between A and B? Answer: ____________

If the line of sight is not in adjustment, determine the correct rod reading on B with the instrument still set up at A. Answer: ____________

In the two-peg of a dummy level, the following observation are taken.
INSTRUMENT SET UP NEAR A
INSTRUMENT SET UP NEAR B
Rod Reading on A
0.921
0.367
Rod Reading on B
1.430
0.768
a. What is the difference in elevation between A and B? Answer:
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. Answer:

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C. Leveling Rod L₁ FS Leveling Rod - BS BM, HI, TP₁ Elev. of TP, Leveling Rod Horizontal Line of Sight BS + Difference in Elev. between BM and BM₂ Elev of BM, (known) (Do not copy the illustration or drawing) Table: Determination of Elevation STATION BS HI FS ELEVATION BM1 1.60 m 100 m TP1 1.47m 0.85 TP2 1.67 m 0.78 TP3 1.54 m 0.89 BM2 0.75 COMPUTATIONS: 1. Computing Height of Instrument and Elevation. In differential leveling, the following two (2) equations are repeatedly used a.) HI Elev + BS b.) Elev=HI-FS Where: HI = height of instrument above a reference datum (MSL) BS = backsight reading on the rod (or plus sights) FS = foresight reading on the rod (or minus sights) ELEV elevation above datum of a point sighted FS BM₂ Elev. of BM₂