Precast concrete does not trace back to a single individual inventor; rather, it evolved through centuries of incremental architectural and material science innovations. Ancient Romans laid the foundational concepts by casting cement mixtures into modular forms. In the modern industrial era, French engineer Frédéric Coignet is frequently credited with patenting early reinforced concrete construction methods in the 1850s, while English engineer W.H. Lascelles patented systems for manufacturing prefabricated concrete slabs in the late 1870s, paving the way for factory-based precast construction techniques.