Which construction method uses concrete poured into forms at the site to be used?

• A. Cast-in-place Concrete
• B. Bowstring Truss
• C. Fire Door
• D. Eave

Answer: (A)

On-site pouring into forms that stay in place to become the final structure is cast-in-place concrete. You build forms to shape the concrete, place the reinforcing, pour it, and let it cure there, creating a monolithic element that’s integrated with the rest of the structure. This is different from precast concrete, where components are cast off-site, cured, and then transported to the job site for assembly. The other options aren’t about pouring concrete: a bowstring truss is a roof-framing member, a fire door is a safety-rated door, and an eave is the edge of a roof.