For tilt-up panel construction, which statement about door and window frames options is correct?

• A. They are not used
• B. They must be embedded
• C. Door and window frames may be embedded or cast-in-place
• D. They must be cast-in-place

Answer: (C)

In tilt-up construction, door and window frames can be integrated in two valid ways: they can be embedded in the panel during casting, or they can be cast-in-place after the panel is erected. Embedding the frame means placing the frame or jambs into the formwork so the concrete pours around them, creating a built-in opening with the frame already set. Cast-in-place frames are installed in the rough opening after the wall panel is raised, using pre-formed pockets or anchored jambs to receive the hardware and to support the door or window. The statement is correct because it acknowledges this practical flexibility—both approaches are commonly used depending on project needs, timeline, and detailing.