The surveyor established the stadia interval factor of a theodolite by setting up the instrument 50 m from the leveling rod and taking the upper and lower stadia hair reading as 2.166 and 1.665, respectively. Afterwards, the theodolite was used to determine the horizontal and vertical distance of a control point to the contstruction site. The theodolite was set-up in the control point, and the following data was gathered: STA OBS A m Elevation of control point: Height of instrument (fr ground): Determine the following: Upper Middle (m) (m) 2.446 Lower Vertical (m) Angle (°) 1.650 1.650 b) Elevation of construction site 8.500 m 1.100 m Remarks 10.256 construction site a) Horizontal distance of control point to construction site

The surveyor established the stadia interval factor of a theodolite by setting up the instrument 50 m from the leveling rod and taking the upper and lower stadia hair reading as 2.166 and 1.665, respectively. Afterwards, the theodolite was used to determine the horizontal and vertical distance of a control point to the contstruction site. The theodolite was set-up in the control point, and the following data was gathered: STA OBS A m Elevation of control point: Height of instrument (fr ground): Determine the following: Upper Middle (m) (m) 2.446 Lower Vertical (m) Angle (°) 1.650 1.650 b) Elevation of construction site 8.500 m 1.100 m Remarks 10.256 construction site a) Horizontal distance of control point to construction site

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 theodolite is set up at one end of a level line 150.0 m long. The line is marked by stakes at every 30.0 m and a stadia rod is held at each stake. The stadia intercept at each station of the rod is observed as follows: 0.302, 0.600, 0.899, 1.207, and 1.506 meters, respectively. Compute the stadia interval factor (K) for each distance and also determine the average value of K.Take C = 0.300
Factor Equipment Variable Term Correction Energy Ratio Donut Hammer Safety Hammer Automatic Hammer 65 to 115 mnm CE = ER/60 0.5 to 1.00) 0.7 to 1.20) 0.8 to 1.50) Borehole Св 1.0 Diameter 150 mm 1.05 200 mm 1.15 Sampling method Standard sampler Cs 1.0 Non-standard sampler 1.1 to 1.3 Rod Length 3 to 4 m CR 0.75 4 to 6 m 0.85 6 to 10 m 10 to >30 m 0.95 1.0 'Values presented are for guidance only. Actual ER values should be measured per ASTM D 4633 O a 20 Ob 14 Ос 19 Od 13
The theodolite is placed in the middle of points A and B, where the subtense bar is positioned. The instrument reads 0°24’56.2” and 0°44’36.8” for A and B. Compute the distance between A and B.
Problem1) Determine the depth to bedrock for a site. _______meters2) Determine the velocity of the overburden _______meter/second and3) Determine the velocity of the bedrock _________meter/second.4) Critical distance from the source point __________metersGeophone 1 is 20 meters from the shot point and each geophone is 20meters from the next one.Geophone First Arrival time (seconds)1 0.0152 0.0313 0.0464 0.0625 0.0776 0.0897 0.0948 0.0999 0.10510 0.11011 0.11512 0.121
6. The following data refers to a vertical block resonance test carried out on a 1.5 m × 0.75 m × 0.7 m high (M150) concrete block. f (cps) 15 18 20 22 23 24 26 27 29 | Amp. (mm) | 0.03 | 0.05 | 0.08 | 0.15 | 0.2 | 0.22 | 0.18 | 0.16 | 0.13 Plot frequency vs. amplitude and compute coefficient of elastic uniform compression Cu and damping factor of the soil at site.
Seismic method of a site investigation is a type of: Sonic drilling Electromagnetic Investigation Non- Intrusive Investigation All of the above
In the two-peg test of a dumpy level, the following observations were taken. Rod reading at A Rod reading at B (m) (m) Instrument at pt. M 0.396 0.910 Instrument at pt. P 1.4 2.14 Point M is equidistant from both A and B, while point P is outside line AB, 2.5 meters from A and 79.27 m from B. *in the space provided, indicate: a. Find the difference in elevation between A and B. b. Adjust the correct readings when the instrument was at point P.
18. The angle of elevation of point A, on a pole is measured as 1° and the angle of depression of point B on the same pole is measured as 2°, when measured from a location using a theodolite. Calculate and write the horizontal distance of the pole from the instrument station, if the elevation of point B is 102 m and length of AB is (10+Z) m. Enter your answer take , z = 8
3. A 2-meter long subtense bar was first set up at A and subsequently at B, and the subtended a to the bar, as read from a theodolite positioned somewhere along the middle of line AB, were recorded as 45'30" and 56'11", respectively. Determine the line AB. 4. If the scaled horizontal distance between points A and b is 433.,50m and the elevation of A ar
by interpolation determine the time when a penetration of 25 mm is obtained with the initial setting time
Find the corresponding formula to match the conditions of minor loss. Sudden conraction Gradual contraction Entrance loss Valves and fittings Exit loss Sudden enlargement Gradual enlargement…
Engr. Brimrock is conducting a tacheometric survey and wants to know the elevation of station B. The upper and lower stadia readings on the rod held at station B were observed as 3.27 and 1.47, respectively, with the use of theodolite having a stadia interval factor of 99.99. The height of the instrument above station A is 1.37 m and the rod reading is taken at 1.51 m. The vertical angle observed is - 12° 9' and the elevation at station A is 114.09 m above sea level. Determine the elevation at station B above sea level in meters.