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Chapter 1: Q12DQ (page 390)

During the Great Mississippi Flood of 1993, the levees in St. Louis tended to rupture first at the bottom. Why?

Short Answer

Expert verified

Due to the rise in pressure with depth, the levees brunt first at the bottom.

Step by step solution

01

Significance of gauge pressure

The depth below the surface is precisely proportional to gauge pressure. As the depth grows, so the pressure also increases. At any depth, the pressure increases by the same amount.

02

Determination of cause of rupture

It has been shown in equation given below,

p-patm=蚁gh

Here,pis the absolute pressure,patmis atmospheric pressure, 蚁is the density of fluid,g is the acceleration due to gravity, and his depth below the surface.

The pressure of a fluid increases with the depth. The pressure near the underside acts more on leveesthan they experienced near thehighest.

Thus, it ruptured at the bottom first.

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