Problem 3. A 12-cm-diameter aluminum downspout drains the roof of a house with an elevation drop of 4.2 m. a When the gutter runs full, what would be the flow rate in liters per second? Assume the downspout is smooth (k, = 0) using the Swamee-Jain Equation. b The gutter is designed for a rain storm with a rainfall intensity of 5 inches per hour. At this rate, what area of roof in m² could be handled by the downspout? 4.2 m Water

A catchment has the Horton infiltration parameters: fo= 150 mm/h, fc = 50 mm/h, and k = 3 min¹. The design storm is given below. Estimate the time when ponding begins. Interval (min) Average rainfall (mm/hr) 20 40 80 170 90 20 0-10 10-20 20-30 30-40 40-50 50-60

5) Two water reservoirs are connected by a cast iron pipeline which is 150 mm in diameter for the first 6 m and 225 mm diameter for the remaining 15 m as shown in Figure 1. The entrance and exit are square-edged. If the discharge is 0.185 m³/s and dynamic viscosity of water is 0.00102 Ns/m², determine the various losses along the pipeline. Answer (2.78 m, 1.72 m, 1.1 m, 5.01 m, 1.54 m of water) H JALA B water Figure 1 C water

2. You're designing a stilling basin and you need to know the minimum length of that basin and also how much energy loss will be achieved before flow is released into the downstream channel. Given the basin width is 10-feet, the flow rate is 240 CFS, the upstream froude number is found from hydraulic modeling to be 4.0. Solve the following: • Minimum length of the stilling basin. • Energy loss within the stilling basin (Calculate both energy loss in feet and in tons). • The depth of water being released outside of the stilling basin. • The Froude Number being released from the Stilling Basin. • Look at USBR Design of Small Dams and Write a paragraph (4-5 sentences) of the recommended stilling basin you would propose for the hydraulic scenario.