More about repointing: Matching sand

As noted in previous columns, successful long-term performance for repointing mortar joints in an existing masonry structure requires the development of an appropriate mortar mix, proper installation, and correct designation of the type and extent of work required.
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Innovative in-situ repairs of stucco-clad EEEs

Recent collapses of exterior elevated elements (EEEs) like balconies, walkways, and stairs have caused injuries and fatalities, leading to increased scrutiny of these features. Based on decades of experience inspecting and repairing these structures, stucco-clad EEEs on weather-exposed elevations are particularly susceptible to structural damage and catastrophic failure than...
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Primary seals are not secondary

A recently completed multistory building was experiencing significant water leakage directly below the interfaces of rising walls at setback roofs during prolonged wind-driven rain events. The building was principally clad with 150-mm (6-in.) thick architectural precast concrete (APC) panels finished by the fabricator with a 75-mm (3-in.) thick mortar-set...
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