So, what are fire hydrants made out of anyway?
If you've ever walked your dog past one and wondered what are fire hydrants made out of, you're looking at a pretty impressive piece of engineering designed to stand the test of time and extreme pressure. These stubby little street fixtures aren't just hunkered down there for decoration; they are heavy-duty survival tools that have to work perfectly every single time, even if they've been sitting untouched for five years in the rain or snow. ...