Masonry Veneer Investigation in Transitional Construction Restoration

Large stone veneer restoration projects for buildings designed and built in America’s “transitional” phase (≈1900–1950) require a clear understanding of as-built conditions even when documentation is available. Evaluation is essential in transitional construction that combines bypass veneer and load-bearing components. The cross-discipline nature of the building’s stone demands a collaborative effort to decipher, diagnose, and develop needed repairs. The design-build team used the initial investigation at the Oklahoma State Capitol to assess a variety of limestone anchorages from the original construction: stone-to-stone, stone-to-backup, and stability and erection aids. In some instances, anchors were not indicated on original documentation, while others differed significantly from the original drawings and specifications. The design-build team used explorations with non-destructive and semi-destructive evaluations in conjunction with original documentation and historical photos to develop repairs that met the project’s scope priority and budgeting guidelines.