(ii) The readings given below were made with a tacheometer theodolite having a multiplying constant of 100 and the additive constant of zero. The reduced level at station A was 100.0 m and the height of the instrument axis is 1.35 m above the ground. Calculate the gradient expressed as the horizontal distance one meter rise or fall vertically between the stations B and C. Station To A B C Whole circle bearing from N 45°00′ 135°00 Vertical angle +11°30 -17°00′ Stadia readings (m) 2.048/1.524/1.000 2.112/1.356/0.600

(ii) The readings given below were made with a tacheometer theodolite having a multiplying constant of 100 and the additive constant of zero. The reduced level at station A was 100.0 m and the height of the instrument axis is 1.35 m above the ground. Calculate the gradient expressed as the horizontal distance one meter rise or fall vertically between the stations B and C. Station To A B C Whole circle bearing from N 45°00′ 135°00 Vertical angle +11°30 -17°00′ Stadia readings (m) 2.048/1.524/1.000 2.112/1.356/0.600

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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a) Point A has an elevation of 216.612 m above a vertical datum, and the point B is situated on the opposite sides of a busy twelve-lane highway (44.4 m width). For stability of both point locations are designed one meter away from each edge of the highway. From the measurement, the following results are obtained: Instrument setup at station 1 (A side of highway): Staff reading on A = 0.673 m Staff reading on B=2.416 m Instrument setup at station 2 (B side of highway): Staff reading on B= 2.992 m Staff reading on A = 1.254 m (i) Based on the description above, choose a proper measurement method used in surveying to realize the elevation at point B? Justify your answer. (ii) Calculate the elevation/reduced level at point B based on the proposed method above (i) Determine the main error would be potentially generated and calculate magnitude of the error. (iii)
2. A 1" reading theodolite having a multiplying constant of 100 and an additive constant of 0 was centered and levelled a height of 1.48 m above a point C of reduced level 46.87 m. A levelling staff was held vertically at points D and L in turn and the readings shown in table 1 were taken. Calculate (i) the reduced levels of points D and L (ii) the horizontal length of DL. Staff position Staff reading (m) Vertical circle Horizontal circle D L 3.240, 3.047, 2.853 2.458, 2.230, 2.002 readings 87°38'53" 92°21'36" readings 56°49'31" 98°07'18"
PLEASE ANSWER WITH COMPLETE SOLUTION. THANK YOU. The horizontal distance between two points, A and B is 420m, and these are established along the same direction from a theodolite station. If the distance of the theodolite to point A is twice its distance to point B, what are the subtended angle read on a subtense bar held at A and B?
2. Staff readings are 0.65, 0.99 and 1.32 m. Additive and multiplicative constants are 0.5 and 100, respectively. Reduced level of instrument station is 25.25 m and the height of instrument is 1.45 m. a. Determine the distance from the instrument to the staff b. The reduced level of the staff VINGIT OF DANAD THE
Point A has an elevation of 216.612 m above a vertical datum, and the point B is situated on the opposite sides of a busy twelve-lane highway (44.4 m width). For stability of both point locations are designed one meter away from each edge of the highway. From the measurement, the following results are obtained: Instrument setup at station 1 (A side of highway): Staff reading on A = 0.673 m Staff reading on B = 2.416 m Instrument setup at station 2 (B side of highway): Staff reading on B= 2.992 m Staff reading on A = 1.254 m Based on the description above, choose a proper measurement method used in surveying to realize the elevation at point B? Justify your answer.
2. In the two peg test method of a dumpy level, the following observations were taken. Instrument near A Instrument near B Rod rdg. on A Rod rdg. on B 0.324 m 1.445 m 1.203 m 2.523 m a. Determine the error in the line of sight. b. What is the difference in elevation between A and B? c. Determine the correct rod reading on A with the instrument still set up at B.
The readings given below were made with a tacheometric theodolite having a multiplying constant of 100 and no additive constant. The reduced level at station A was 100.0 m and the height of the instrument axis 1.2 m above the ground. Calculate the horizontal distance from station A to station B in m. Station Bearing (0) Vertical Angle (⁰) Stadia Readings A 10 48 138 2.048; 1.56; 1.000 2.112; 1.39; 0.600 -19 Note: Variables given in Question 6, 7, 8, 9 and 10 are NOT the same. Carefully check the given data for each question. To B C
solve a and b given asap. a) In a two-peg test of a dumpy level, the following readings were taken: Instrument at R, mid-way Staff readings between pegs P and Q: at P 1.525 m at Q 1.230 m Instrument near P: at P 1.420 m at Q 1.025 m How much is the line of collimation inclined upwards or downwards? What should be the correct staff reading at Q with the instrument near P to keep the line of collimation truly horizontal? b) Two pegs A and B are driven 100.0 m apart. In the adjustment of a dumpy level, following observations were recorded: observations given in the image. State whether the instrument is in adjustment. Find the R.L. of B.
In the two-peg test of a dumpy level the following observations were taken: with level setup near A, observed readings are a = 1.850 m and b = 1.430 m; with level setup near B, c = 1.790 m and d = 2.210 m. A. Find the true difference of elevation. Express answer in 3 decimal places. B. How is the line of sight inclined? C. Determine the correct reading on the rod held at A with the instrument still in the same position at B for a horizontal line of sight. Express answer in 3 decimal places. D. Without instrument replacement, what should you do to adjust the line of sight?
The difference of levels between two points A and B is determined by using a tacheometer. The instrument was setup at another point Cand following observations were taken: [Assume staff to be held verticle during measurements] Staff at A Vertical angle Stadia Reading (in m) A -6°30' 3.50, 2.815, 2.130 B -8°30 1.87, 0.99, 0.110 Assume additive constant, C = 0.50 and multiplying constant, k = 50.0. Find the difference of level between A and B.
A level was checked for collimation error using a two-peg test and the following results were * .obtained Staff reading at A Staff reading at B With the level midway between A 0.746 m and B 1.246 m Level set up 10 m from A and 70m from B 1.390 m 1.896 m If this level was used to measure the R.L of point R depending on a B.M (K) with a R.L=30m as in the figure below, calculate the R.L of point R. 1.798 1.362 R В.М (К) -30m 10m 200m 32.673m 33.233m 29.465m 30.453m
DIFFERENTIAL LEVELING Problem: Complete the differential level notes shown in the table below. STA BS HI FS ELEV BM1 2.085 137.450 m TP, 2.015 0.982 TP2 1.864 1.428 TP3 0.579 1.527 BM2 0.423 2.423 TP4 1.446 1.807 TP5 1.778 1.725 TP6 2.051 2.339 TP, 2.920 1.005 BM3 3.186 2.358 TP3 2.805 0.995 TPg 0.774 1.206 BM4 0.603