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2 answers
8 votes
Why are creeks sometimes piped underground in urban areas?
5 votes

What's the reason for going to the cost and effort of doing this? In many places, placing a stream into a culvert can be cheaper in the long run. Streams (particularly fast flowing ones) erode the ...

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7 answers
7 votes
Why does the orientation of a floor joist affect its strength?
4 votes

The first thing to take into account is how stress builds in a material. This is rather intuitive and something we all know, but takes a bit of thinking to back it up mathematically. It's quite easy ...

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2 answers
1 votes
Horizontal and vertical forces on supports
Accepted answer
2 votes

You don't always have to use moments to calculate reactions. In this situation it's possible just by balancing horizontal and vertical forces. You have one force at an angle. With all our reactions ...

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