I installed a outdoor "sump" about 6 years ago. My solution was to add a lean-to cover over the stair so it no longer received rainwater. In my old house, I had an 8' (full height) exterior concrete stair to a basement level and it just had a drain to a drywell at the lower landing. If the drain can't handle it, you need somewhere to pump it to. You will also need to think about where you are sending the water. 1" depression is typically not feasible with a pump - you would need a suction device. It will need to be deep enough for the floats - a foot deep or so to really be effective. I pump sending the water to a low spot at the back of my lot.įor your case collecting rainwater, you will need to create a "sump" or low spot for water to collect and put the sump pump. 4' below grade and right next to the foundation wall (with minimum insulation). It is operable year round (Alaska) though it typically is only an issue in the fall rainy season and spring breakup. The pump is plugged into a gfci outlet on the exterior of the house. I currently have the float adjusted to pump when the water in the pit gets within 8" to 1' of my lower floor slab. The house is retrofitted with a perf pipe at the perimeter that drains into a vertical culvert (corrugated pipe), inside which my sump pump sits. I have a sump pump located outside for high groundwater issues. An interior one is not an option since the basement is all finished. That's why we're looking for an exterior sump, to carry away water from the dugout. So the water couldn't go to the sewer and just started filling the "dugout." That water seeping under our door into the finished basement. But this year we got a torrential downpour that overloaded our city sewer systems. The concrete dugout floor has drains that go to sewer. To help visualize, you open the door from the basement, and there's a 12 ft wide x 4 ft long concrete floor that's 4-feet below the yard: the "dugout." You climb up a few steps to get to the yard. We have a walkout basement "dugout" that fills with water around 1x/year, which can seep through the basement door. Headache! is there any convenient, reliable solution to operate the sump when power fails?įor context, here's the problem: We live in an NYC area townhouse. Then there's generators, which I'd have to hook up before a storm. So, I feel the need to do my own research to buy the right set up.Ģ) Would you recommend 2 sump pumps as backups to each other? I understand they can fail somewhat easily.ģ) How do you winterize it? Do you have a heated blanket or just unplug it from the power and disconnect from discharge hose?Ģ) How about if the power fails? I saw something about water-powered pumps (which seems to be more for indoor sumps) and also marine batteries (which I've read fail easily). And even then, he says I need to supply my own sump pump. My GC said they're quite unusual, and the only contractor I could find who has experience with one is a masonry/exterior guy. All the advice online seems to be about indoor sumps.
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