US Patent 10094101 Precast concrete system with rapid assembly formwork

The disclosed system divides the precast and cast-in-place construction into vertical and horizonal components. The vertical components are precast, permitting rapid vertical building construction without a delay for concrete to set. The two primary precast components are a column that includes a horizontal inflexible slab portion, and a central panel placed diagonally between columns. Each precast component is a weight and size that is readily manageable using a standard construction crane.