In 1999, renowned Canadian consultants Donald Hazleden and Paul Morris presented a seminal paper, “Designing for durable wood construction: the 4Ds”, that summarized the 4 D’s (deflection, drainage, drying, and durable – aka, decay-resistant – materials) of successful wall design.
This AVELAR case study explores certain aspects of the far-too-common tragedy of injuries and deaths resulting from the sudden collapse of balconies and decks.
Despite widespread recognition by modern designers and consultants of the importance of “air barriers”, our firm continues to see litigation claims….
In construction defects litigation, opposing parties often present widely divergent assessments of the nature, cause, and extent of purported deficiencies.
In order to highlight fundamental design and construction errors, this paper briefly reviews our firm’s litigation-related evaluation of below-grade waterproofing