Скачать или смотреть FEExam #50: Earthwork Volume Problem (Prismoidal formula) (Step-by-Step Solution)

What is the Prismoidal Formula?
It’s a powerful method in civil engineering to calculate the volume of earthwork between stations when you know the cross-sectional areas — especially when there’s a mid-station!

This FE Civil-style problem walks you through calculating earthwork volume between STA 3+50 and 4+50 using the prismoidal formula, step-by-step. We go from identifying station areas, to substituting into the formula, and even converting from ft³ to yd³ for the final answer.

If you’re preparing for the FE Civil Exam, mastering this concept can earn you easy scoring points in the Earthwork & Construction section!

00:00 Introduction and Problem Statement
01:13 Identifying Relevant Stations/Areas
01:42 Prismoidal Formula Explanation
02:45 Calculation and Substitution
03:30 Unit Conversion (Cubic Feet to Cubic Yards)


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Why was the free body diagram so stressed? Because it had too many forces acting on it! 😅

What is a free body diagram? A free body diagram (FBD) is a visual representation of all the external forces acting on an object or system.

Knowing how to draw an FBD is essential to solving statics problems, so if you're preparing for the FE exam--try out this practice problem!

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