Precast concrete is a method of building construction where the concrete member is poured and cured in a controlled environment and is then shipped to the construction site for use. Which term describes this method?

• A. Precast concrete
• B. Cast-in-place concrete
• C. Post-tensioned concrete
• D. Insulated concrete

Answer: (A)

Casting concrete off-site in a controlled plant, where it is cured and then transported to the job site for installation, is what precast concrete refers to. This approach lets manufacturers produce standardized components with tight quality control, which are then moved to the project and assembled. The description matches precast because the concrete member is formed and cured away from the building site, not on-site. Casting on the site is what cast-in-place concrete means, which is the opposite process. Post-tensioned concrete describes a reinforcement technique added after the concrete cures, and insulated concrete forms describe a specific form/insulation system rather than where the concrete is cast.