Reinforced concrete revolutionized the construction industry through the speed of execution and the load-bearing capacity of the ceilings. Strobl’s photographs document how the construction work progressed as well as the internal construction of buildings, which would later be concealed behind conventional facades. The pictures were taken as part of patent agreements with the French inventors of the process (known in French as beton armé ), who published the images in trade journals that were distributed internationally. They were also used in the advertising brochures of emerging construction companies such as Ast & Co, Rella, Porr, and Pittel & Brausewetter, and it was not uncommon for the photographs to be passed on to clients for use in their own publications.