Repair of an Improperly Detailed Masonry Facade: A Case Historyby Michael R. Wyman, Restruction Corp, United States,
Timothy V. Gumina, Restruction Corp, United States,
John D. Reins, Restruction Corp, United States,
Abstract: The masonry facade of an 18-story condominium building was constructed with an inconsistent pattern of shelf angle supports, marginal lateral restraints and without any horizontal control joints. The resulting stacking and thermal stresses produced severe cracking, spalling and bowing of the masonry walls as well as associated structural and cosmetic distress within the building. A repair plan was developed to address these deficiencies. Specifically, supplemental anchors were installed to provide proper vertical support and lateral restraint for the walls. Where necessary, shelf angles were inserted to create the appropriate intermediate levels of support. Horizontal joints were then sawcut into the walls and the distressed bricks were replaced or repaired. These remedial measures were accomplished while the building remained occupied.
Subject Headings: Masonry | Building envelope | Residential buildings | Joints | Walls | Building design | Thermal loads | Anchors
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