Precast concrete is concrete that's been poured, dried and treated away from the work site and transported into place. Precast concrete is a popular construction material for office buildings and other large structures.
Precast concrete has some advantages over concrete mixed and poured at a job site. It's generally mixed indoors in a controlled environment, which can lead to more predictable results. It's often hardened as well, which makes it popular for elements such as staircases. Precast concrete allows construction companies to outsource some tasks while they work on the building's foundation and other elements that must be created on site, which can speed up the construction process. Using precast concrete allows companies to avoid the expense of designing concrete molds.