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When: Friday, December 9, 2022, 2-3:15 pm ET

1 AIA Health/Safety/Welfare Learning Unit

Speaker: Richard W. Off, AIA, Senior Architect - Hoffmann Architects, New York, NY

Description: Masonry rehabilitation work is not a one size fits all solution. While the goal is generally to preserve as much original material as possible, and targeted repairs or salvaging and reinstallation might often be sufficient, it is sometimes necessary to replace masonry units, and in some cases entire assemblies, to address hazardous conditions and extend building lifespan. 

Saving unique parts and details are a critical component of any historic rehabilitation project, but thoughtful replacement might be required to help preserve the structure as a whole, as it could allow for a more thorough correction of local deficiencies before they propagate into bigger problems that jeopardize the integrity of the surrounding fabric. 

The process of determining the best solution is further complicated by ever more stringent requirements from building departments, particularly those with facade safety programs concerned with unstable material, and also by landmark agencies, which often enforce replacement of materials in-kind. Evolving energy codes can also be an important consideration, and this can especially influence projects which require more comprehensive replacement of the facade assembly.

Learning Objectives:

• Describe the kinds of distress and failure that common types of masonry materials, assemblies, and construction eras are prone to and why certain materials are more durable than others.

• Explain the general spectrum of repair, restoration, and replacement solutions that can be performed to correct masonry deterioration and how each impacts building longevity and maintenance.

• Evaluate which typical masonry rehabilitation solutions might be the most appropriate in certain situations, and when temporary or alternative solutions might be necessary for access, budget, schedule, and constructability reasons.

• Consider the typical mandated requirements involved with performing masonry inspection and rehabilitation work, such as those from building departments, energy codes, façade inspection safety programs, and landmark boards.

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