Page 380 - Construction Waterproofing Handbook

8.40 CHAPTER EIGHT

FIGURE 8.42 Mechanically fastened retrofit waterstop. (Courtesy of Earth Shield)

Many alternative remedial residential applications are available. Often recommended is
the installation of a sump pump that can drain water away from the exterior envelope areas
into a drainage area where it can be pumped to appropriate drains. The application of a
sump pump and the cove treatment described above are usually sufficient to correct all but
the most serious leakage problems. See Fig. 8.43.
Manufacturers have created wall panels that create drainage paths for infiltrating water.
The water runs down the panel and is collected at the base of the wall and into a drainage
area where a sump pump is used to drain the water. The panels in themselves can be used
as a finish surface for basement areas, as shown in Figs. 8.44 and 8.45.
If the basement slab is contributing to the problem, typically fixing cracks in the slab,
and remedial treatment of the floor-to-wall juncture, will correct the infiltration. Slab
cracks can be filled with chemical grouts as described in previous sections, or routed and
filled with a sealant or nonshrink grout. If the problem persists with seepage directly
through the concrete, a sump pump might reduce the hydrostatic pressure sufficiently to
alleviate the problem. In the most serious situations, prefabricated drainage panels can be
used to drain the water to the sump pump area.

PREFABRICATED DRAINAGE PANEL REMEDIAL APPLICATIONS

The same prefabricated drainage systems described in detail in Chap. 2 can be used for
remedial treatments, usually for below-grade or slab-on-grade negative-side applications.