What does this joke mean?

<p>“What are civil engineers taught? Everything goes downhill”</p>

<p>My ME101 teacher said this joke and no one laughed and then he said, “you’ll get there”. So just wondering…</p>

<p>kidding? gravity.</p>

<p>The saying in civil engineering is that “(poop) flows downhill.”</p>

<p>^They say that everywhere…</p>

<p>In civil engineering, it’s also meant in the literal since. Think sewers.</p>

<p>An example of it in business is: Your manager reads an article in a trade magazine getting an idea that he thinks will “translate well in our environment”…then he tells you to “make it so, Number 1”.</p>

<p>six inches per 100, max.</p>