(1)
Vertical building assemblies that separate interior space from the ground are permitted to be dampproofed where,
(a)
such assemblies are not subjected to hydrostatic pressure,
(b)
the substrate is cast-in-place concrete, and
(c)
a drainage layer is installed between the building assembly and the soil. (See Note A-5.7.3.4.(1))
(2)
Joints, junctions and penetrations shall be designed and constructed to maintain the continuity of the dampproofing.