Page 68 - Construction Waterproofing Handbook

2.32 CHAPTER TWO

FIGURE 2.39 Typical cementitious cetailing for elevator pit waterproofing. (Courtesy of
Xypex)

FIGURE 2.40 Application details for critical wall-to-floor juncture, with product run continuously
under the wall structure. (Courtesy of Xypex)

system is installed for additional protection, as should a vertical drainage system. Again,
such a detail should be used with caution because of the mortar joint weakness. Figure 2.42
details a manufacturer’s alternative installation suggestion using the cementitious system in
both interior and exterior waterproofing applications to ensure watertightness under a “belt
and suspenders” system.
Cementitious systems are ideal for many below-grade civil structures that are typically con-
crete structures. Figure 2.43 provides a manufacturer’s cementitious system for an underground
vault. Note in this detail how the cementitious system is used as a negative system on the