| SUMP PUMPS |
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Sump Pumps
Sump pumps are commonly used in homes that experience basement flooding during a heavy rain or snow melt. Basement flooding is a common problem throughout the country and in many homes, particularly in homes built on flat terrain where rain and snow melt do not have good runoff. When the ground becomes saturated with water, ground water pressure builds, forcing water towards the path of least resistance. If that path is a crack or fissure in your basement, water will take that path. Increasing water tables can also force water through the concrete joints.
Sump pumps have been keeping basements dry for years and are effective for that purpose when properly installed. Although the term "sump pumps" is commonly used, it would be more accurate to use the term "system" because they are no longer just a unit in a hole in the corner of the basement. Nowadays, systems include basins, plumbing, check values, below-ground drainage pipes, battery backups, and much more. Turning a wet basement into a clean dry area, often involves hidden systems to control ground water levels, condensation, and other sources of water. Learn more about sump pumps.
What type and size do I need?
Look for units that have cast iron or other heavy metal housings. Cast iron will dissipate heat much better than those made with plastic or thin metal housing and will last a lot longer. There is no correct size (horsepower), other than it being big enough to handle the area of drainage, the depth of groundwater, and other factors. Generally speaking, 1/3 horsepower is satisfactory for most homes. A typical 1/3 HP unit will have an average lift ability of 25 feet and flow capacity of about 25 GPM.
Bigger is not always better - Although a higher horsepower rating will move more water, a unit that is too large can cause it to turn on-off too frequently causing decreased life expectancy. Learn more about sump pumps.
How large should the hole in the basement be and what should it be made of?
The ground hole should be about 24 inches in diameter and about 22 inches deep. This will allow adequate space for the pump and associated piping and to store water between pumping events (about 15 to 25 gallons). About 3 to 4 inches of coarse gravel should be placed in the bottom of the hole to form a solid base for the pump and to help prevent mud and other debris from clogging the pump.
The sump pumps should not reside directly in this hole, but rather should be enclosed in a liner or basin. Metal or plastic liners can be used, but plastic is the material of choice. A residential basin should have a minimum inner diameter of 18 inches and be at least 22 inches deep.
Where should the water be pumped to?
Water should be discharged at least 20 feet away from the house so that it drains away from the foundation. It should not be directed onto a neighbor's lot, into window wells, or onto a septic system drain field. If you have a septic system, under no circumstances should the sump be pumped into the floor drains or other access to your septic system.
Where can I get quality sump pumps?
At the BasementDepot, we sell only quality units - some of which are the same ones used by professional waterproofing companies. Look at the Sump Pumps sold at the BasementDepot.
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