Historic Buildings

There are a great many structures of historic significance that need to be preserved for the study and use of future generations. These projects can be challenging because the construction materials and techniques are often no longer used. We have successfully stabilized and preserved many historic structures, including canal aqueducts, bridges, churches, barns, forts, log cabins and residences.

The critical factor in developing a temporary retention system for an historic façade is a clear understanding of the existing structural mechanisms and how they were intended to work. Particularly complex are cast iron façade systems such as the Murray Building, circa 1868, façade in Washington, D.C. Supporting systems need to be designed to ensure no damage to the façade from attachment points nor from deflections or settlements of the supporting system that are not compatible with the historic façade. We have successfully investigated and developed many such designs,  set clear criteria and provided detailed existing façade information for the façade support contractor.

Many of our historic structures have been passed down to our generation without significant documentation of how the structure was built. This makes rehabilitation or even basic repairs more difficult and can even risk damaging historic fabric. Through field assessments, evaluation of existing documentation, and testing we can assemble historic structure reports that provide valuable information for future work on the structure.