Knowing which waterproofing coverage to specify for a particular structure is more than just a science; it is an art form

With space at a premium in many urban areas, developers are digging deeper foundations to increase the square footage of residential, commercial and mixed-use building projects

Floors required to be waterproofed shall be of concrete and designed and constructed to withstand the hydrostatic pressures to which the floors will be subjected

This section implies that a waterproofing application is completed when the site ground water table is maintained at an elevation of not less than 6 inches below the bottom of the ground slab.

Waterproofing systems are required on all below-grade surfaces that are (1) occupied and (2) subjected to hydrostatic pressure.

 1807.3 Waterproofing required. Where the ground-water investigation required by Section 1802.2.3 indicates that a hydrostatic pressure condition exists, and the design does not include a ground-water control system as described in Section 1807.1.3, walls and floors shall be waterproofed in accordance with this section.