3.1 - Finding Area and Wetted Perimeter
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Practice Questions
Test your understanding with targeted questions
What is the formula to calculate the area of a trapezoidal channel?
💡 Hint: Think about the shapes involved in a trapezoid.
Define wetted perimeter.
💡 Hint: Consider what boundaries are touched by the liquid in an open channel.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What formula represents the hydraulic radius?
💡 Hint: Remember the relationship between area and wetted perimeter.
True or False: The wetted perimeter only includes the bottom width of a trapezoidal channel.
💡 Hint: Think about the dimensions of the full channel.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A trapezoidal channel has a bottom width of 8 meters and side slopes of 2:1. Given a flow depth of 2.5 meters, calculate the area, wetted perimeter, and discharge using Manning's equation.
💡 Hint: Pay attention to depth and slope when calculating.
A circular pipe has a diameter of 1.2 meters and is flowing at a depth of 0.4 meters. Derive the area of flow, wetted perimeter, and evaluate the discharge rate. What if the diameter were reduced by half?
💡 Hint: Use trigonometric relationships for the circular portion.
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