Hi Civil Engineering Academy (CEA) - Thank you for sharing this video with all of us. @4:45 minutes , you mentioned that the answer is (D) 4,050 lb/day. The closest answer is (A) 4,580 lb/day. The feed rate (M) = Q(MGD)*C(mg/L)*8.34 L-lb/MG-mg 110 gpcd and a population of 10,000 is equivalent to a flow rate of 1.1 MGD , substituting the given concentration of 500 mg/L and multiplying by the correction factor of 8.34 yields 4,587 lb/day. I hope it helps
As someone who has gone through all 20 of these bonus questions through this review course, I highly recommend this study material. It was super helpful for me to figure out what conceptual topics I needed to learn more about before I take the PE Exam!
These questions drive me nuts. Ie for the most efficient section, what does that mean? The wetted perimeter is less in the semi circle but the hydraulic radius is greater for the circle. Mannings looks at hydraulic radius to determine flow, not just wetted perimeter.
the higher the wetted perimeter, the greater the resistance to flow. that is why the lowest wetted perimeter (given all shapes have the same area) is the most efficient.
Hi Civil Engineering Academy (CEA) - Thank you for sharing this video with all of us. @4:45 minutes , you mentioned that the answer is (D) 4,050 lb/day. The closest answer is (A) 4,580 lb/day. The feed rate (M) = Q(MGD)*C(mg/L)*8.34 L-lb/MG-mg
110 gpcd and a population of 10,000 is equivalent to a flow rate of 1.1 MGD , substituting the given concentration of 500 mg/L and multiplying by the correction factor of 8.34 yields 4,587 lb/day. I hope it helps
As someone who has gone through all 20 of these bonus questions through this review course, I highly recommend this study material. It was super helpful for me to figure out what conceptual topics I needed to learn more about before I take the PE Exam!
These questions drive me nuts. Ie for the most efficient section, what does that mean? The wetted perimeter is less in the semi circle but the hydraulic radius is greater for the circle. Mannings looks at hydraulic radius to determine flow, not just wetted perimeter.
the higher the wetted perimeter, the greater the resistance to flow. that is why the lowest wetted perimeter (given all shapes have the same area) is the most efficient.
I want more! Haha
Me 2