Section 1807.3.1


Walls required to be waterproofed shall be of concrete or masonry and shall be designed and constructed to withstand the hydrostatic pressures and other lateral loads to which the walls will be subjected.



This section implies that all walls that require waterproofing shall be constructed of concrete or masonry and shall be of structural integrity to withstand hydrostatic pressure and lateral loads.

The waterproofing applied at the walls shall consist of one of the following membranes:

  • Two-ply hot moped felts
  • 6-mil+ polyvinyl chloride (PVC)
  • 40-mil polymer modified asphalt
  • 6-mil polyethylene


The waterproofing should be applied a minimum of 12 inches above the highest point of the ground water table. The membrane joints shall be lapped in accordance with the membrane manufacturers latest printed requirements.