A tacheometer with a stadia constant of 0.3m was set up on the line between two points A and B. The following hair readings are observed: HAIR READINGS ROD POSITION UPPER MIDDLE LOWER Rod held at A 1.327 1.171 1.011 Rod held at B 2.004 1.867 1.707 If the stadia interval factor of the level is 100: а. Determine the length of line AB. b. If the instrument height is 1.52m and it is set-up on a point with elevation 22.10m, determine the elevation of point b.

A tacheometer with a stadia constant of 0.3m was set up on the line between two points A and B. The following hair readings are observed: HAIR READINGS ROD POSITION UPPER MIDDLE LOWER Rod held at A 1.327 1.171 1.011 Rod held at B 2.004 1.867 1.707 If the stadia interval factor of the level is 100: а. Determine the length of line AB. b. If the instrument height is 1.52m and it is set-up on a point with elevation 22.10m, determine the elevation of point b.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A tacheometer was set up at station P and observations were made to two stations Q and R. The vertical angles to Q and R were 5°30’ and 1°08’ The cross-hair readings at Q were 2.105, 2.47 and 2.835 and those at R were 2.215, 2.56 and 2.905. The staff were held vertical in both cases. The instrument constants were 100 and 0.3. The reading from P to a BM of RL 285.35m was 2.255. The horizontal angle QPR measured was 58°30’. Find the distance QR, the gradient from Q to R and the RLs of Q and R.
FIVE DECIMALS PLACES: The constants K and C for a certain instrument were 99.89 and 0 respectively. The ground makes a uniform slope of 9.7% from point A to point B. With the instrument at A and staff at B, readings were taken but due to obstruction in the line of sight, only the reading was recorded to be 1.928. If the vertical angle of the instrument was 6.4 and the height of the instrument above A was 1.64 m, determine the horizontal distance between A and B.
Convert the following bearings to equivalent azimuths a. AB, N 25°25’ Wb. BC, Due East A 100- m steel tape is used to measure the distance of the line and found to be 1539.28m long. During measurement, the tape is supported the ends under a pull of 10 kg andthe observed mean temperature is 31 deg. celsius. The tape is of standard temperatureof 20 deg. celsius and a tension of 12 kg. The cross sectional area of the tape is 0.035 sq.cm. The coefficient of linear expansion is 0.0000116/ deg. celsius and the modulus ofelasticity of steel is 2.0 x 106 kg/ sq. cm. The tape weighs 1.5kg.a) Determine the total correction for temperature.b) Determine the total correction due to sag.c) What is the correct length of the line? Three hills A, B, and C are at elevations 135m, 146m, and 154m respectively above sealevel. Distance AB is 3.9km while distance BC is 3.1km.a) Find the effect of curvature and refraction between A and B.b) Determine the effect of curvature and refraction between A and B.c)…
vertical angle is 30°23’, and observed stadia intercept is 2.20m. The stadia interval factor at the measurement used 95.50m and C is 0.30m, if the height of the instrument is 1.62m, and the rod reading is taken 1.95m. Determine the HD, VD, ID, and DE. Given:K= 95.5mS= 2.2mC = 0.3mVertical Angle = 30°23’
A line of level is run from B.M.I (elevation=106.40m) to B.M. 2 elevation=110.50m). The lield observations were recorded as given below:
Given:Upper reading = 1.64 mMiddle reading = 1.57 mLower reading = 1.51 mVertical Middle Angle = 10°32’00”Elev of point A = 333 mH of instrument = 1.2 mK = 100Stadia Constant = 0 Solve the ff.: A. Inclined, horizontal, and vertical distance B. Elevation of point B.
The following data were obtained by a stadia measurement; vertical angle is 30°23’, and observed stadia intercept is 2.20m. The stadia interval factor at the measurement used 95.50m and C is 0.30m, if the height of the instrument is 1.62m, and the rod reading is taken 1.95m. Determine the HD, VD, ID, and DE. Given: K= 95.5m S= 2.2m C = 0.3m Vertical Angle = 30°23’
Q#1: A profile levelling is carried out and consecutive readings were observed on staff rod along a chain line at common interval of 10 meter which are listed below in table. First reading is taken on bench mark of 105.615 meter reduce level. Station Points Chainage (m) Staff Readings (m) Remarks BS IS FS 1 00 3.005 BM 2 10 2.285 3 20 1.560 4 30 1.785 5 40 2.105 6 50 2.875 3.105 CP 1 X 53.35 3.465 7 60 3.955 8 70 3.120 9 80 3.015 10 90 2.580 11 100 1.955 CP 2 Determine the reduce levels of all points using both line of collimation and rise and fall method. (Present your answer in table form).
A 3 meter long subtense bar was first set up at A and subsequently at B, and the subtended angle to the bar, as read from a theodolite position somewhere along the middle of the line AB, were recorded as 3deg 5’00” and 2deg 6’00". Determine the length of line AB. a. 125.69 m b. 137.58 m c. 256.12 m d. 165.69 m
An engineer's level with stadia constant of 0.30-m was set up on the line between A and B, the following crosshair readings were observed. If the stadia interval factor of the level is 100, determine the length of line AB.
A tacheometer was set up at B.M and the following observations were made with a leveling staff held vertically at P and Q. Ins: Station Staff Station Vertical Angle Hair Readings Bearings Remarks B.M P +10° 00’ 1.050, 1.103, 1.156 40° R.L of B.M =1958.500 ft Q -15° 00’ 0.952, 1.055, 1.158 140° The constant of instrument (f/i) = 100, Height of instrument = 5.15 ft Compute: The horizontal distance between P and Q Reduced Levels of P and Q Grade between P and Q
Compute the angles AOB, COD, and EOF from the following set of lines whose magnetic bearings are given: a. OA, N 39° 25' E and OB, N 75° 50' E b. OC, N 34° 14' E and OD, N 53° 22' W c. OE, S 15° 04' E and OF, S 36° 00' W