House Foundation Excavation: High Water Table Issues
Why Do I Have a High Water Table?
The water table typically rises in the spring in many parts of the U.S. due to higher amounts of precipitation and runoff from melting snow. Just as the level in the rivers, ponds and lakes rise, the ground water table rises. As more and more water filters down into the ground, the level of the ground water table rises.
A House Foundation Excavation and Water…Not the best combination.
Builder Trick to Remove Water from House Foundation Excavation
One way to solve the high water table issue is to over-excavate a small hole next to your house foundation excavation. You will dig this adjacent hole 1.5 to 2 feet deeper than the main excavation (and approximately 3 feet in diameter). You will then place a water pump down into the small hole. As long as your pump can keep up with the water entering the house foundation excavation, it will stay dry. It’s best to get the biggest pump you can handle that will fit into the hole. Most rental companies supply what they call trash pumps…let them know what you are using it for and they can help you.
Have you ever thought about building your own home? Be sure to stop by the Armchair Builder How to Build Your Own Home resource page.
Safety with Excavations
Your house foundation excavation, as well as utility trench excavations, require special treatment to remain safe. For the house foundation, sloping or benching the excavation is necessary to help prevent cave-ins. For more information on how to slope or bench an excavation and for other useful safety tips, check out OSHA’s (Occupational Safety and Health Administration) guide to safety with excavations.
Here are some additional resources you might find helpful to you when planning a new foundation project.
Drain Tile and Your Basement This video talks about the role drain tile plays in a properly built basement foundation. We cover the basics and offer up builder tips for proper installation.
Your Home Foundation: Frost Protection This article talks about the importance of protecting your foundation from frost when installing in cold weather. It can be tricky to pour of foundation in below freezing temperatures…so we give you some tips to get a quality job
Structural Problems: What are Your Chances? In this article we discuss the percentages of structural problems in homes. We also talk about how foundations are the big ticket for prevention. With proper building methods, you can avoid these major issues with your new home.
Preventing Home Foundation Problems We offer up typical foundation installation quality problems and talk about how you can avoid them in your new home or addition.