Precast concrete elements are broadly categorized into two primary structural types: reinforced precast concrete and prestressed precast concrete. Reinforced precast concrete utilizes standard steel rebar embedded within the concrete matrix to provide tensile strength and support standard load-bearing architectural requirements. Prestressed precast concrete incorporates high-strength steel strands or tendons that are tightly tensioned before the concrete is poured or after it cures, putting the concrete under permanent compression to dramatically enhance its load capacity, reduce cracking, and allow for longer spans in bridges and large buildings.