: What precast concrete is and the materials used.

Pouring concrete outdoors leaves you at the mercy of the weather. Rain, extreme heat, or humidity can weaken the final product. Precast concrete is produced in a factory setting, allowing for rigorous quality control. Furthermore, Elliott highlights the architectural potential of precast. Because it is cast in molds, architects can achieve intricate textures, smooth finishes, and complex shapes that would be impossible—or prohibitively expensive—with traditional formwork.