Question

Next Page Page 1 of 2 Part 2 Question 1 (2 points) Calculate the flow rate (Q) in the channel using Manning equation (when the flow in the channel is uniform flow). Use measurements taken in the lab. (So = 0.002). Provide answer to at least 3 decimal places. Your Answer: Answer Question 2 (2 points) Using the flow rate in the channel found in question above, calculate the critical depth Dc. Provide answer to at least 3 decimal places. Your Answer:

n=0.009

Widh=b=10cm

Normal depth=15cm

Slope in one in 500

D1=3cm

D2=18cm

Answer 1

Q=2 15 ml b= 10 cm = 0.1m So= 0.002, n = 0.oos Isem: y = 0.15m b = 10cm 1.A . 0.158o.1 0.015m pa btada 0.4m R = A/p = 0.0375m 2/3 = A R 58 2/3 0.015 * (0·0375) x Jo.002 o.oog n 3 8.35 810 m/sec Je = ? L 7 Ye q q? %= 0.0835 to 0.0835 9.81 2 JO yo 8.92cm Ye