Fluid Mechanics

Fluid Mechanics Review: Calculating Capacity of a Concrete Stormwater Pipe

July 27, 2022 by Anthony Fasano, P.E. Leave a Comment

In this article, (and video above), we calculate the capacity of a concrete stormwater pipe that forms part of the Fluid Mechanics section of the FE Exam.

Question:

A concrete stormwater pipe is 500 feet long and has a pipe diameter of 36 inches. The inlet elevation is 165 feet and the outlet elevation is 160 feet. The Manning roughness coefficient, assumed to be constant with depth of flow, is 0.012.During heavy rainfalls, the stormwater pipe flows full with no surcharge.

During heavy rainfalls, the capacity of the stormwater pipe is most nearly:

Explanation:

Engineering Practice Quiz: Fluid Mechanics and Hydraulics – Fluid Dynamics

October 5, 2021 by Anthony Fasano, P.E. Leave a Comment

In this article (and video above), I solve a fluid dynamics question that would fall under the water resources and hydrology section of the FE exam, similar to what you may encounter during the exam.

Question:

A 500 mm circular pipe carries a flow of 0.28 m3/s of water under a pressure of 0.34 cm, mercury (Hg). If the pipe is laid at an elevation of 9.3 m above a reference datum, then the total head (m) with respect to the reference datum is most nearly:

9.45 m
9.37 m
9.66 m
9.71 m

Fluid Mechanics

Question:

Explanation:

Question:

Solution: