Kecia Fong With so many transitional masonry building s located in historic urban downtown centers, the importance of conservation and preservation of these structures has become increasingly evident. This presentation will discuss the methodology and application of conservation techniques to transitional masonry buildings. We will present investigative, analytical and diagnostic processes involved in the identification and selection of appropriate conservation treatment programs such as cleaning, repair and replacement. The slate, clay tile and copper roofing systems on many of these buildings are often original and in need of evaluation and repair. This presentation will draw upon several case studies to describe evaluation techniques, material testing and analysis, and the overall rehabilitation of these original roofing systems.
Many transitional buildings have various types of infill walls.
The strut analogy will be presented to illustrate how infill walls can make a significant contribution to the ability of a frame building to resist earthquake forces. Peter A.J. Gibbs Corrosion problems in early steel-framed buildings have increased during the past two decades. Typical defects include cracking, displacement, and spalling of the masonry in contact with the steel frame as expansive corrosion products develop behind the facade. In exceptional circumstances, corrosion can even cause structural problems due to excessive loss of section. Corrosion problems relate to the designs and details used prior to 1940 and, as such, the number and significance of problems will increase.