determine the specific gravity

In determining the elevation of point A and the distance between two points, A and B, a theodolite is set up at A and the following data are obtained: z= 92°45', stadia interval = 1.311m, hi = 1.28m, and the line of sight at 2.62m on rod. The instruments constants are K=100.5 ad C = 0.305m. The elevation of B is 38.25m. Compute the distance AB and the elevation of point A. *Note: Zenith Angle is the angle from the vertical line (from the point above the observer). Distance AB: in meters Elevation of point A: in meters

with full written solution

Determine the error of a line, 256.32 m long, measured using a 50 m steel tape at 38 °C. The steel tape was calibrated at 20 °C. 0.0355m (too short) 0.0535m (too short 0.0355m (too long) 0.0535m (too long)

1 In a two-peg test, a level was set up exactly midway between two pegs X and Y which are 50 metres apart. The readings to the pegs were: Peg X 2.394 Peg Y 1.971 The level was then set up at a point Z, 5 metres beyond peg Y on the line XY and further readings taken as follows Peg X 2.723 Peg Y 2.330 Calculate: (a) the collimation error in the level as a percentage, (b) the staff readings required to correctly adjust the instrument.

#3 choices 3.046 2.834 3.406 2.384

Two decimal places only.']

9:30 PM | 0.1KB/S& 94 + Assignment CE 11. Assignment on CE 1101 Submission Deadline: 24 March, 2020 Question 01: A Tacheometer was set up at point P and two readings were taken from two station A and B. Compute the distance between points A & B when the staff was held normal to the line of collimation in both cases. The Tacheometer constants are being 100 and 0.3 respectively. Vertical Angle 3°30' 2°45' Staff readings (m) 1.35, 2.10, 2.85 1.95, 2.85, 3.75 Instrument Staff Line WCB 84°35' 142°25' A AP P В ВР Question 02: A tract of land has three straight boundaries AB, BC, and CD. The fourth boundary DA is irregular. The measured lengths are as under: AB = 135 m, BC = 191 m, CD = 126 m, BD = 255 m. The offsets measured outside the boundary DA to the irregular boundary at a regular interval of 30 m from D, are as below. Determine the area of the tract. Distance from D (m) 0.0 30 60 90 120 150 180 Offsets (m) 0.0 3.7 4.9 4.2 2.8 3.6 0.0 Question 03: Estimate the volume of earthwork for…

Example 6 The following consecutive readings were taken with a level and a 4m staff at a common interval of 30m; The first reading was taken at B.M. having R.L. =100m. The instrument were shifted after the 4th and 9 th readings. Rule out a page of a level book, enter the readings given and also calculate the reduced levels of the points by the collimation method. Also apply arithmetic checks. Consecutive readings are: 2.650, 1.745, 0.625, 0.260, 2.525, 5, 2.160, 1.235, 0.870, 1.365, 0.625, 1.790, and 2.535.

10 A theodolite was set up near the middle of the points "P" and "Q". If the height of the instrument is 1.20 m. The rod is sighted at point "P", vertical angle = +24 degrees, rod reading = 1.3 m, and stadia interval = 1.4 m. Then the rod is sighted at point "Q", vertical angle = +23 degrees, rod reading = 1.6 m, and stadia interval = 1.1 m. Taking K = 100, and C = 0. a) Horizontal Length from Point "P" and "Q" 210.045 m 216.829 m 219.837 m 225.013 m 213.560 m None of the Choices 222.570 m