If it runs under the concrete into the dirt it will end up washing it away, creating sink holes and destroying the concrete/people no?
No, they use one of two methods to prevent this. They either use semi-solid substrate with...
If it runs under the concrete into the dirt it will end up washing it away, creating sink holes and destroying the concrete/people no?
No, they use one of two methods to prevent this. They either use semi-solid substrate with perforated drainage tubes (I'd assume this would be for larger expanses like parking lots or an elevated roadway). Or they use packed gravel substrate that allows the water to percolate naturally back into the ground, which is almost no different than what happens on normal ground.
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(view all 8 comments)this is not good
if I spill my drink I wont be able to get it back anymore
Posted by Lord is GOD (guest) on Wed Jul 27 13:17:15 2011
If it runs under the concrete into the dirt it will end up washing it away, creating sink holes and destroying the concrete/people no?
No, they use one of two methods to prevent this. They either use semi-solid substrate with...
If it runs under the concrete into the dirt it will end up washing it away, creating sink holes and destroying the concrete/people no?
No, they use one of two methods to prevent this. They either use semi-solid substrate with perforated drainage tubes (I'd assume this would be for larger expanses like parking lots or an elevated roadway). Or they use packed gravel substrate that allows the water to percolate naturally back into the ground, which is almost no different than what happens on normal ground.
Posted by Guest on Tue Jul 26 02:15:09 2011