PE Exam Practice Problem #47: Water Resources | Darcy-Weisbach - Turbulent Flow

Welcome to SolvedIn6: Free practice problems for the Professional Engineering Exam! Each question is styled after those created by the NCEES, and is usually solved in under 6 minutes, which is the average time you will have to solve each question on the Professional Engineering Exam.
In this problem, we are asked to find the Darcy-Weisbach friction factor for a given pipe. The first thing to do is use the reference manual to find the Darcy-Weisbach equation. Then, we can perform the following steps:
Step 1: Write out the Darcy-Weisbach equation and fill in our known terms. We will be missing V and f.
Step 2: Using Q=V*A, we can find V.
Step 3: We can calculate f.
That’s it!
If you would like more Water Resources practice problems, please check out the rest of the playlist which this video is part of.
Please note that newer versions of the reference manual may have been released since this video was recorded. The search terms are usually still correct, but the page numbers listed in the video will be different.