PROJECT DESCRIPTION:

Working directly for the University, investigated the six-story education building, which was built in the 1960’s. The exterior masonry walls were bowing due to poor original structural attachment to the floor slabs at each level. Determined causes of the distress, and developed repair documents for remediation.

ADDITIONAL PROJECT FACTS:

  • Approximately 700 lineal feet of deteriorated perimeter stone trim band were removed/replaced with Glass Fiber Reinforced Concrete panel units
  • Repairs to diagonal bridging and installation of new epoxy anchors occurred at 80 locations to secure the bowing exterior walls to the structure
  • Remediation of deficient separating firestop barriers at each floor slab edge was also accomplished

White Hall, a six-story 70’-tall structure, is the nucleus of the University’s Education Department. With a plan footprint of approximately 212’ by 137’, the building includes dozens of classrooms, faculty offices, and student lounge areas. It was designed in the early 1960’s and built in 1965. Due to poor original structural detailing and the lack of a positive means of structural attachment of the east and west masonry exterior walls to the floor slabs of the building, those exterior walls had progressively bowed and separated from the structure. The building was configured with steel frame construction from the ground floor to the first floor level. The first floor level was concrete floor slab over steel deck on steel frame on columns lines with infill of open-web steel joists between column lines. The upper five floors were concrete slabs on steel deck over open web steel joists which bear on masonry bearing walls that bear on the steel beams at the first floor level. The exterior walls were constructed of 8” nominal thickness concrete masonry units with brick facing and stone trim at windows and a horizontal band at the roof and first floor. Field investigation involved looking into ceiling spaces, looking into building rooms where exterior walls were separated from floor slabs, and observing vertical cracks in walls. Observations from the exterior revealed cracked and missing stones at the first floor horizontal stone band and corrosion of perimeter spandrel beams at the first floor level. Barber & Hoffman issued a comprehensive report to the University, complete with detailed recommendations and opinions of probable construction cost, followed by preparation of repair documents for subsequent bidding and construction.

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