The following are the data obtained in a stream gauging operation. A current meter with a calibration equation V = (0.32 N + 0.032) m/sec was used to measure the velocity at 0.6 depth. Using the mid-section method, calculate the discharge in stream. Distance from the right bank Depth (m) 0 0.5 1.10 1.95 2.25 1.85 1.75 1.65 1.50 1.25 0.75 0 (m) 0 2 4 6 9 12 15 18 20 22 23 24 No. of revolutions 0 80 83 131 139 121 114 109 92 85 70 0 Time (Sec) 0 180 120 120 120 120 120 120 120 120 150 0

The following are the data obtained in a stream gauging operation. A current meter with a calibration equation V = (0.32 N + 0.032) m/sec was used to measure the velocity at 0.6 depth. Using the mid-section method, calculate the discharge in stream. Distance from the right bank Depth (m) 0 0.5 1.10 1.95 2.25 1.85 1.75 1.65 1.50 1.25 0.75 0 (m) 0 2 4 6 9 12 15 18 20 22 23 24 No. of revolutions 0 80 83 131 139 121 114 109 92 85 70 0 Time (Sec) 0 180 120 120 120 120 120 120 120 120 150 0

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

he following are the data obtained in a stream -gauging operation . A current meter with a calibration equation V = (0.32N + 0.032) * m / s , where N = revolutions per second was used to measure the velocity at 0.6 depth . Using the mid -section method , calculate the discharge in the stream .
Using the information and the following data that were collected for two verticals in a stream at a gauging station. What is the discharge in m³ in the elemental strips by the mid-section method. V = 0.7N + 0.03 N = rev/sec Distance from depth (m) Immersion of current meter below water surface one end of water surface (m) 3 6 Select one: O a. 5 O b. 9.4 O C. 9 0.8 1.2 at 0.2d Rev 135 150 Sec 150 100 at 0.8d Rev 97 150 Sec 151 138
Problem statement The data pertaining to a stream-gauging operation at a gauging site are given below. The rating equation of the current meter is v=0.51 Ng + 0.03 m/s where NB second. Calculate the discharge in the stream. Distance from left water edge (m) Depth (m) Revolutions of a current meter kept at 0.6 depth Duration of observation (s) 0 0 0 0 1.0 1.1 39 100 3.0 2.0 58 100 5.0 2.5 112 150 7.0 2.0 90 150 9.0 1.7 45 100 = revolutions per 11.0 1.0 30 100 12.0 0 0 0
Problem 1 Stage and discharge measurements at a gauging station are given in the table below. We know that there is a power relationship between the stage and the discharge at a river cross-section as: Q = K(stage – a)b where Q: discharge (m/s) stage: water surface elevation (m) a: constants for the station where after this depth the real flow starts. (Assume that a=0.10 m) b: constant of the power equation K: constant of the power equation Stage(m) Q (m³/s) 0.3 0.4 0.5 0.7 0.9 1.1 1.7 2.1 2.6 95 145 170 210 225 267 348 425 487 Using Excel, find the best fit equation of the rating curve between Q and (stage-a). Determine the coefficients (K and b) from the equation best fit curve. Hint: (i) Plot (stage-a) vs Q as scatter plot. (ii) Right click on one of the points on the graph and select “Add Trend Line". (iii) Select power equation and select to see the equation and R? value on the graph. b. Estimate the flood discharge for the given river stage of 2.3 meters. a.
The data pertaining to a stream-gauging operation at a gauging site are given below. The rating equation of the current meter is v= 0.51 N, + 0.03 m/s where N, = revolu- tions per second. Calculate the discharge in the stream. Distance from left water edge (m) Depth (m) Revolutions of a 1.0 3.0 5.0 7.0 9.0 11.0 12.0 1.1 2.0 2.5 2.0 1.7 1.0 current meter kept at 0.6 depth 39 58 112 90 45 30 Duration of observation (s) 100 100 150 150 100 100
Q) The following data are obtained from the current meter gauging of a stream, at a gauging station. Compute the stream discharge using 1- Mid section method 2- Mean section method. Rating equation of current meter: v = 0.72 N+ 0.144, where N = rev./sec, v=velocity (Km/hr). Distance from Water depth Immersion of current meter below water surface the left bank of river (m) (m) depth (m) revolution sec 10 36 20 40 3. 0.6 0.44 1.76 0.8 3.2 1.6 6.4 0.84 3.36 0.5 2.0 0.72 40 48 50 57 53 59 57 51 49 52 53 2.2 9. 30 12 8 46 33 33 29 34 29 16 15 4.2 18 2.5 21 24 1.2 48
A discharge of 100 L/s to be measured by triangular notch of vertex angle 60°. What would be the head over the vertex of the notch? If the accuracy of reading the head is 1 mm what error in discharge can be expected at this level? Assume C, = 0.58.
The following data were collected for two verticals in a stream at a gauging station. Compute the discharge in the elemental strips by (i) the mid-section method (ii) the mean-section method Distance from one end of the water surface (m) Depth, d (m) Immersion of current meter below water surface (m) At 0.2d at 0.8d rev sec Rev Sec 3 0.8 140 160 110 155 6 1.2 160 120 150 149 Rating equation of the current meter, v = 0.7 N + 0.03 where N = rev/sec, v = velocity (m/s)
Problem 2: (a) A pump curve for a pump running at 800 rpm is given by h, =20–4713 Q² , where h, is in meters and Q in cms. What will be the pump curve for the same pump running at 1200 rpm? (b) Find the discharge and head for the pump that is running at 1100 rpm, when the same pump running at 1600 rpm produces head of 75 ft and discharge of 7000 gpm (part (b), is not related to part (a) in any way).
Q₁: A) The following data were collected for a stream at a gauging station. Compute the discharge. Rating equation of current meter: v=0.35 N +0.025, N= rps, v = velocity, (m/s). Distance from one end of water surface ((m) 3 6 9 12 15 18 21 Depth (m) 1.4 3.3 5.0 90 5.4 IRE 38 18 nov 12 18 Immersion of current meter below water surface M0.21 At 0.60 sec 50 50 Rev 38 40 48 34 35 Sec 33888 52 58 60 62 52 Rev 23 30 34 30 30 ALD B Sec. 55 54 50 50 54
PROBLEM: Determine he from A toD in the system shown in the figure if the discharge is 1.60 m/s. Assume f= 0.02. 450 mm ø s 600 m 900 mm,90Om 750 mmø, 450 m A C. 4 D GOO mm 720 m (3
1 With the empirical equations below, derive for the head loss equations with respect to discharge. Consider that the flow is full and flowing on a circular conduit. a. b. V= 0.849CRO.64 50.54 c. V =