Precast concrete contributes to green building practices in significant ways. The low water-cement ratios possible with precast concrete -0.36 to 0.38- mean it can be extremely durable. The thermal mass of concrete allows shifting of heating and cooling loads in a structure to help reduce mechanical-system requirements.

As precast is factory-made, there is little waste created in the plant while construction waste and debris on site are reduced.

The load-carrying capacities, optimized cross sections, and long spans possible with precast members help eliminate redundant members.