* Design a regime Channel for a discharge of 35 m3/s
With Silt factor of 0.9 by Lacey's theory Side Slopes
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1H: 2v.
Answers
Answer:
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Answer:
The perimeter of the channel is 28.10 m
Explanation:
Lacey's slit theory
Initial Regime
- Only the bed slope of the channel varies and the wetted perimeter remains unaffected. condition of non-silting and non-scouring occurs here.
- Lacey's slit theory isn't valid for the initial regime condition.
True Regime
- Only 1 channel section and bed slope exist for the true regime condition. It is ideal in nature and does not exist actually.
- Lacey's slit theory is valid for true regime conditions.
Final Regime
- All the variables are liberal to vary and finally get adjusted according to discharge and silt grade then the channel is said to have achieved permanent stability.
- Lacey's slit theory is valid for the ultimate regime condition.
CALCULATION
P=4.75×√Q
where Q = discharge
given:
Q=35 m³/s
=4.75×√35
=4.75×5.9
=28.101 m.