In carrying out the permanent adjustments of a level by, the following observations were made: Instrument at peg (C) midway between points A and B, 100m apart. Readings at points A and B are 2.500m and 3.500m, respectively. Instrument at peg (D) in line of AB such that AD-120m and BD-20m, Readings at points A and B are 1.500m and 2.600m, respectively. Check whether the instrument needs permanent adjustment or not and whether the line of sight is inclined upward or downward. What should be the correct reading at (A and B) if the instrument is to be adjusted?

In carrying out the permanent adjustments of a level by, the following observations were made: Instrument at peg (C) midway between points A and B, 100m apart. Readings at points A and B are 2.500m and 3.500m, respectively. Instrument at peg (D) in line of AB such that AD-120m and BD-20m, Readings at points A and B are 1.500m and 2.600m, respectively. Check whether the instrument needs permanent adjustment or not and whether the line of sight is inclined upward or downward. What should be the correct reading at (A and B) if the instrument is to be adjusted?

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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When carrying out the permanent adjustments of a dumpy level by two-peg method, the following observation were made. Instrument at E midway between C and D, 100 m apart. Reading at point C = 2.000 m Reading at point D = 3.000 m Instrument at F in line of CD such that CF = 120 m and DF = 20 m. Reading at point C = 1.500 m Reading at point D = 2.750 m Check whether the instrument needs permanent adjustments or not, and whether the line of sight is inclined upwards. What should be the correct reading at C if the instrument is to be adjusted?
2) Given the following data: Table 1: Differential Leveling Observations Station A TP1 B TP2 A Elevation 13.869 m 11.445 m 9.643 m 11.189 m 13.875 m Notes Known and Fixed Temporary Point of Interest Temporary Close Loop a. What is the loop misclosure? b. What is the corrected elevation of point B using an adjustment by setups? 12
B. Double-Rodded Leveling 3. Complete differential level notes for the information shown and perform the customary arithmetic check. STATION BS HI FS STATION 1.722 BM1 127.378 m 1.722 ΤΡΙΗ 2.623 1.382 TP1L 2.789 1.522 TP2 H 3.089 0.899 TP2 L 3.214 0.714 ТРЗ Н 1.521 2.452 TP3 L 1.632 2.678 ТРА Н 2.333 1.113 TP4 L 2.589 1.523 TP5 H 0.667 2.877 TP5 L 0.986 2.543 3.521 BM2 3.214
In the leveling process, using the \"Level\" device, calculate the proportions for the points and the indicated readings
العنوان не ➤ The following observations were recorded when carrying stadia level between two temporary bench marks. ➤ If the elevation of TBM1 is 750.0 m, compute the elevation of TBM2. Back sight Fore sight Stat. interval Rod read. v.angle interval Rod v.angle read TMB1 3.14 8.6 -0° 25' TP1 5.02 4.5 -3 15 5.02 6.3 +1 52 TP2 4.88 10.0 -1 02 2.74 2.2 +6 20 TP3 6.08 8.0 +0 36 8.06 5.0 +6 13 TP4 1.96 5.5 -5 52 4.81 8.5 -4.00 5.92 12.2 -1 13 TBM2 ۱/۱ S で T =T [く] M
When performing a leveling process for the longitudinal section of a road, the following readings were recorded: The first reading was taken on the leveling number (B.M1), whose Tevel is (60 meters), while the rest of the points were taken on the section points (00+0. 0+50 + 00+ 1... . (While working, lift the device after the fourth, seventh, and tenth reading. Arrange the readings in a table, then complete the table and verify the correctness of the calculations. Draw the segmént and establish a slope line inclined by 0.4% - and its level at the beginning of the project is 60 meters. Find the burial depth in each station. " Reading sequence 1 2 3 4 5 6 7 8 9 10 11 12 13 Reading the ruler 1.35 1.72 1.98 2.05 2.17 2.76 2.98 0.67 1.78 2.48 |2.88 3.10 3.39|
Please do it handwritten
Question 49 In leveling across a river, reciprocal level readings were taken between two points A and B. From a set up near A: on A, 0.994 and 0.992 m; on B 2,076, 2.077, 2.078 and 2.077 m. At the set up near B: on H, 2.550 and 2.548m; on A, 1.462, 1.463, 1.464 and 1.463. From the observed data it can be determine that A. B is 1.085 m below A B. B is 1.085 m above A C. A is above B by 1.088 m D. A is below B by 1.084 m E. A and B are of the same elevation
3G 70% 3:23 L2 DISTANCE MEA... [ Worked examples: Use of stadia Tacheometry Formulae A 1" reading theodolite having a multiplying constant of 100 and an additive constant of 0 was centred and levelled a height of 1.48m above a point C of reduced level 46.87 A levelling staff was held vertically at points D and L in turn and the readings shown in the table below were taken Calculate (i)the reduced levels of points D and I Staff Readings (m) Staff Vertical circle Horizontal circle 3.240, 3.047, 2.853 87° 38' 53" 56 49' 31" L 2.458, 2.230, 2.002 92° 21' 36" 98 07' 18" 32 32 / 43
Ex-2-: In a levelling process the readings were recorded as following: (1.349, 1.723, 1.522, 1.634, 1.542, 1.773, 1.829 m). If the Level instrument was relocated after the fourth reading and the level of the fourth point was (30 m). Calculate the elevations of the other points and do check your calculations.
Reciprocal leveling gives the following readings in meters from a set up near A: on A, 1.110; on B, 0.887, 0.995, and 0.884. At the setup near B: on B, 1.549; on A, 1.673, 1.670, and 1.666. The elevation of A is 1045.343 m. Determine the misclosure of B. Express your answer to three decimal places and include appropriate units. Misclosure = Submit Part B elevB = μÁ Value Request Answer CHA Value Units Determine the elevation of B. Express your answer to three decimal places and include appropriate units. Units ? ?
Q.I A line of level is run from B.M.I (elevation=106.40m) to B.M. 2(elevation=110.50m). The field observations were recorded as given helow: Station B. S 1.95 Remarks R.M. 1 IS F.S 2 0.65 3 2.60 1.45 4 -1.90 -1.60 0.55 0.50 B.M. 2 Reduce the level of point 2, 3, 4 and 5, determine the total error of closure, and adjust the values.