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Author Topic: Basement built after house  (Read 3608 times)
« on: December 11, 2007, 07:14:57 AM »

I have a house with a basement that was hand-dug several years after the house was built.  They came over from the footer of the house about 3-4 ft. and laid up a block wall.  The problem is that they did not put any drainage provisions behind this new wall.  There is a natural spring under the property  that flows in against the back of this wall.  Over the years of constant water behind certain areas of this wall, the water has rotted out the old cinder block to "mush."  They poured a lip around the entire floor that used to direct the water to a sump pup.  When I bought this house last year, water was leaking out of the lip and onto the floor, eventually making it to the sump pump.  I was not comfortable relying on the sump to get rid of this volume of water, kicking on every 3-4 minutes.  In May of 07, I came up with a way to install a floor drain on the back side of the basement.  Digging down about 9 ft against the back of the house, I tunneled a 4 in. sch. 40 pipe into a hole I had dug in the basement.  Now I have a way to get rid of the water, so what I'm getting ready to do is to put interior drainage at the base of the walls to try and keep all of the water beneath the concrete floor, and drain it on out through the new floor drain.  Any suggestions before I start this messy job?  Thanks for any info.
Rod Johnson
« Reply #1 on: December 12, 2007, 10:16:40 PM »

Sounds like you have your work cut out for you. Plan sounds good, just use a good helping of clear stone and don't place the new drain tile lower than the bottom of the footing.
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