Originally Posted By: rray
This post was automatically imported from our archived forum.
Here’s what the engineers said.
Apparently, the cause of these concrete boats was flooding in the neighborhood. About twenty years ago there was a canyon at the right of the property. The canyon was filled in and a large apartment complex was built on the landfill. Prior to the landfill and construction, water used to drain heavily in the area, causing major flooding along many of the streets. Because the canyon no longer exists and storm drains and drainage pipes had been installed in the neighborhood back then (alleys and streets), engineers said that although a proper foundation should be constructed ($8,000), the stability of the soil in that area did not present any specific problems for the size and age of the house at this point.
I went back out to look at the apartment complex. After digging through the bushes, brush, and other interesting stuff (this is not the most desirable neighborhood; I went in daylight), I did find the storm drain/street drain concrete pipe exit under the alley that now exists at the rear of the subject property, although the exit was several blocks away.
If I were 10 again, I would have explored that wonderful "tunnel." Instead I went to On The Border and had a margarita.
Home inspections. . . .
One home at a time.