Perimeter drain installation

I’ve had the trench for the perimeter drain in place for quite a while. I delayed the installation of the drain pipe because I had to take care of a couple of other tasks first.

I knew that I had to rake out the joints of the limestone foundation wall, and wanted to be done with it prior to the drain installation. Having all the mortar dust falling onto and into the perforated drain pipe was something I wanted to avoid. Nor did I want the residue that I washed out of the joints end up on or in the drain pipe.

I also had to clean up and dissemble part of the old grease trap where I planned to temporarily terminate the perimeter drain.

With these tasks complete, I went about to check the elevations of the perimeter drain trench to assure that I have a minimum of 1% slope from the front towards the grease trap in the back.

I got myself two 100-foot coils of 4 inch corrugated drain pipe. After I got it uncoiled, I placed it in the finished trench bottom. Because the pipe is pretty flexible, I could snake it around some of the corners. For all the 90 degree turns I got elbow fittings, which made the job much easier.

perimeter-drain-01 perimeter-drain-02 perimeter-drain-03

The interior perimeter drain is in place. Later this year I will need to install the exterior perimeter drain. That will involve a lot of digging!

About Marcus de la fleur

Marcus is a Registered Landscape Architect with a horticultural degree from the School of Horticulture at the Royal Botanic Gardens, Kew, and a Masters in Landscape Architecture from the University of Sheffield, UK. He developed a landscape based sustainable pilot project at 168 Elm Ave. in 2002, and has expanded his skill set to building science. Starting in 2009, Marcus applied the newly acquired expertise to the deep energy retrofit of his 100+ year old home in Chicago.

One thought on “Perimeter drain installation

  1. Marcus,
    Love to see all the details of your project. We are gutting an 1890’s brick cottage building in Logan Sq. and faced many of the same challenges, including basement excavation, new plumbing connections and interior perimeter drainage. My understanding is that code requires schedule 40 PVC drainage pipes for interior drainage systems.
    Just curious.
    Good luck with project.

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