Exterior Waterproofing in St. Louis

Challenge

This older home was once piered using concrete piers.  We also had to waterproof it from the outside due to engineering specifications.

The concrete piers to stop settling had failed.  The concept is to reinforce the existing foundation by pouring larger massive concrete area under the existing footing and lift the structure from that.  Applying our push piers specifically to correct the settling problem and around the other failed concrete piers was an interesting challenge.

Weather in January did cooperate by just hanging around 34 degrees but doing all the work outside was hard on the crews.

Exterior waterproofing is not our preferred method, WaterGuard® is, but due to engineering spec. we did all the word as designed.  Placing drainage around the concrete piers made for an unusual flow of the water drainage out ot the street.

Solution

We place push piers according to the engineering specs to lift the structure some.  Remember, the additional weight of all the concrete piers, made this a more difficult task.  We were also able to drain both sides of the home to daylight, downhill towards the street.  No sump pumps were needed.  We installed a vertical water barrier on the foundation wall and fabric on the earth side of the trench.  Several drain tile tubes were placed in the trench after some rock was first placed in the bottom.  The trench was filled with rock to complete the exterior waterproofing.

Project Summary

Design Specialist: Tim Warchol

Head Forman: Chris Blickenstaff