Home & Garden

How does a Foundation Drain work?

July 1, 2014 at 12:00 AM

How does a Foundation Drain work?

Sometimes there is enough snow melt and/or rain to make the water rise around the house. This is known as a high water table or perched water. If this water was to remain adjacent to the foundation it would eventually enter the building because concrete is porous. Therefore many building codes require perimeter drains around the outside of basement footings. These are known as Foundation Drains or Footing Drains. These drains are mandatory for some newer homes. So, how does a foundation drain work?They are not difficult to install before the foundation has been backfilled, but they are costly to put in after the fact. Foundation Drains are installed during initial construction to prevent basements from becoming wet when groundwater is either adjacent to or higher than the floor.

What is a Foundation Drain?

Foundation drains are installed at the bottom of the foundation to divert the water that gathers around the house. These drains run around the exterior of the foundation wall at the footing. When properly installed, footing drains eliminate hydrostatic pressure at the foundation and prevent water at the exterior of the foundation from finding its way into the basement. To protect the bottom of the foundation of a house from water, it's a job worth doing right.foundation drain

A Foundation Drain Typically has Three Components:

  • The drain pipe. This pipe is usually made of High Density Polyethylene (HDPE) plastic and is perforated to allow water infiltration. The standard pipe in this application is 4-6” and goes around the entire footing. It should be a contiguous system with the design having to consider the slope of the lot.
  • The filter fabric and stone. The foundation drain system is usually protected by placing gravel and filter fabric under and around the pipe. First the filter fabric is laid with the excess fabric placed away from the foundation. The crushed stone and pipe is installed and the excess fabric is folded over the trench with more stone. Then sand placed above will prevent soil from washing into the fabric and clogging its pores.
  • The delivery system. The foundation drains have collected the water accumulations at the base of the foundation and must now be diverted away from the structure and into a drainage system. The collected water is then directed toward an on-site dry well or off-site storm water system which is fed by gravity graded from the foundation to the lower collecting place.

basement-resized-600  After the foundation drain is installed the backfill occurs. Unless you were there to witness it you don’t know if the builder used the same dirt from the excavation or filled the backfill with debris from the jobsite like tree roots. You also don’t know if the backfill was tamped or compacted in any way. The foundation drain is as old as the house and has probably failed to some degree. These exterior drains are subject to soil pressure and soil movement. Foundation drains are not covered by homeowners insurance because they are not permanent are will fail over time. http://www.blogsdb.comD

TAP Into Another Town's News:

TAP Into Another Town's News:

Sign Up for E-News

Chatham

Upcoming Events

Sat, December 3, 9:30 AM

Morristown Unitarian Fellowship, Morristown

13th Annual "Gifts of Conscience" Holiday Fair

Arts & Entertainment Other

Carousel_image_3776fc19810c288e3c33_picture1

Sat, December 3, 10:00 AM

Madison Area YMCA, Madison

Christmas Tree Lot at the Madison Area YMCA Opens

Giving Back Home & Garden

Sat, December 3, 10:00 AM

St Pauls Church, Chatham

St Pauls Holiday Bazaar

Food & Drink

Chatham Borough Council can Eliminate the Waiting List for Train Station Parking Permits

November 22, 2016

To the Editor: 

To the 151 Chatham Borough residents who are on the waiting list for permit parking at the train station, which is a minimum of a 3-year wait, and also to Borough residents seeking daily parking spots that all seem to be gone by about 6:30 a.m: GOOD NEWS! Please attend the next Borough Council meeting on Monday, Nov. 28, 7:30 p.m., Borough Hall, third ...

Emma Einhorn: Being Herself and Finding a Place to Belong

 

Emma Einhorn is still in disbelief of the honor bestowed on her. “Amazing,” says the vivacious, chatty 18 year old, describing how she felt when she attended the New Jersey YMCA State Alliance dinner to accept the Madison Area YMCA’s 2016 Youth Volunteer of the Year award. “To do good for people makes me feel good,” she says.

Sitting behind her handiwork ...

Chatham Borough Tree Lighting at Library, 6 p.m. Saturday, Dec. 3

December 2, 2016

The fourth annual Chatham Borough Tree Lighting will take place 6 p.m. Saturday, Dec. 3 at the Library of the Chathams.

Listen to the Chatham Grade 3 Children's Chorus and the Chatham Players Carolers as they greet a special visitor! Get a fun take-home craft from the library.

Bring a new unwrapped toy to donate to the Chatham Toy Drive.

Enjoy a night out under the white lights with ...