The results of a refraction survey (Figure 3.45a) at a sitegiven in the following table. Determine the thickness andP-wave velocity of the materials encountered.3.31areTime of first arrival ofP waves (s x 103)Distance from the sourceof disturbance (m)2.55.07.510.015.020.025.030.040.050.05.0810.1615.2417.0120.0224.227.128.031.133.9

As the figure is not shown in your question , I am assuming the figure to be as shown below and…

Answered: The results of a refraction survey…

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter15: Experimental Methods

Section: Chapter Questions

Problem 9ETSQ

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It is given that 3 day BOD of a sample is 75 mg/lt and the reraction rate constant is 0.345/day. Determine the value of BOD remaining after 10 days in the sample.
A theodolite is set up at station A. The RL of instrument axis is 212,250 m. The angle of elevation to the top of a 4 m long staff, held vertical at station B, is 7°. The horizontal distance between stations A and B is 400 m. Neglecting the errors due to curvature of earth and refraction, the RL (in m (round off to three decimal places) of station B is
A theodolite is set up at station A and a 3 m long staff is held vertically at station B. The depression angle reading at 2,5 m marking on the staff is 6°10′. The horizontal distance between A and B is 2200 m. Height of instrument at station A is 1.1 m and R.L. of A is 880,88 m. Apply the curvature and refraction correction, and determine the R.L. of B (in m).
Difference between Seiemic retledian and repraction:
A theodolite was set up at station PO and horizontal and vertical angles were observed as given in the following table: Horizontal Vertical Station Face circle reading circle reading L 26°36'22" 40°17'18" L 113°25'50" + 26°14'32" Calculate the true value of angle POQ when the line of collimation is inclined to the trunion axis by (90° – c) and the trunion axis is not perpendicular to the vertical axis by (90° – i) where c = 22" and i = 16" down at right.
13. The following table gives two-way travel-times of seismic waves reflected from different reflecting inter- faces in a horizontally layered medium. Travel-time [s] to Geophone to shot-point distance [m] Second reflector Third reflector First reflector 0.299 0.566 0.364 0.517 0.592 0.638 500 1000 1500 0.841 0.701 0.708 1.117 1.393 2000 0.897 0.799 2500 1.099 0.896 (a) Draw a plot of (travel-time)? against (distance)?. (b) Determine the vertical two-way travel-time ("echo-time") and average velocity to each reflecting interface. (c) Compute the depth of each reflector and the thickness of each layer. (d) Compute the true velocity (interval velocity) of each layer.
A theodolite was set up on station A (which has elevation = 45.625m) and %3D directed towards B and C, the H.I=1.65m, K=100, C=0 the following observations were made. Find the horizontal distance and the elevation of B and C From A to Vertical reading Stadia reading B 84° 45' U=2.561 M=1.5 L=0.439 93° 20' U=3.222 M=2.000 L=0.778 1 Add file
Compute the refraction error for a distance 1824.1 m. Answer: Choose... +
The corrections for sampler liner decreases the uncorrected N value? (The correction factor is smaller than 1.0) Explain why.
A theodolite has a tachometric constant of 100and an additive of zero. the center reading on the vertical staff held on point B was 2.292m when was sighted from A as shown in figure below. If the vertical angle was +25°and the horizontal distance AB equal 190.326m, calculate the other staff readings of B if a was 37.95m and the height of instrument 1.35m
S A theodolite is set up at station A. The RL of instrument axis is 212.250 m. The angle of elevation to the top of a 4 m long staff, held vertical at station B, is 7°. The horizontal distance between station A and B is 400 m. Neglecting the errors due to curvature of earth and refraction, the RL (in m, round off to three decimal places) of station B is
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

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