What type of concrete deck uses removable or SIP forms to help maintain its shape while hardening?

• A. Cast-in-place
• B. Cast-in-situ
• C. Precast deck
• D. Post-tensioned

Answer: (A)

Concrete deck poured on site relies on formwork to hold its shape while it cures. Removable forms or SIP forms provide the mold that defines the deck’s final geometry during hardening, and once the concrete gains enough strength, the forms are removed. This on-site forming is what cast-in-place construction is all about (also called cast-in-situ). By contrast, precast decks are cast off-site in a controlled environment and later installed, so they don’t depend on temporary forms left in place during curing. Post-tensioned refers to tightening reinforcement after casting, not the formwork used to shape the deck.