Page 441 - Construction Waterproofing Handbook

THE BUILDING ENVELOPE: PUTTING IT ALL TOGETHER 10.43

FIGURE 10.46 Barrier meetings should prevent detailing such as this.
(Courtesy of Coastal Construction Products)

for the building owner. For example, barrier meetings should alert the project management
team to the placement of structural columns in the expansion joint line as shown in Fig. 10.46.
This poor transition detailing requiring 90-degree turns in the expansion joint will ulti-
mately support the 90%/1% principle over the course of the building’s life cycle. Barrier
meetings can also prevent poor transition details that will fail as shown in Fig. 10.47.
This transition of expansion joints between a sealant and T-Joint System failed because no
transitioning detailing was included in the original documents. Barrier meetings that
prevent such mistakes are an effective means to eliminate the 90%/1% principle on every
building project.

ROOFING REVIEW

There are frequently more subcontractors and different tradespeople involved in a typical
roof installation and related construction than in any other envelope component. Trades
often involved in roof construction include:
● Roofing
● Mechanical and HVAC
● Carpentry
● Masonry
● Miscellaneous metalworking
● Waterproofing