We’re often asked if precast concrete is a green building material. The low water-cement ratios possible with precast concrete (in the range of 0.36 to 0.38) allow for extreme durability. The thermal mass of concrete shifts peak heating and cooling loads in structures, reducing mechanical-system requirements. Because precast concrete is factory-made and most plants employ exact-batching technologies, there’s little waste created, which also reduces construction waste and debris on site and indoor air quality concerns. The load-carrying capacities, cross-section optimization, and long spans eliminate redundant members, and concrete readily accommodates recycled content.