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

A concrete deck that utilizes removable or stay-in-place (SIP) forms to maintain its shape while hardening is referred to as a cast-in-place deck. This method involves pouring concrete into molds that provide the necessary formwork during the curing process. The forms are vital because they ensure that the concrete maintains its intended geometry and structural integrity until it has adequately set and gained sufficient strength.

In the case of cast-in-place decks, once the concrete has hardened sufficiently, the forms can either be removed or, if they are SIP forms, remain in place to act as a permanent part of the structure. This flexibility in formwork allows for various design choices and can contribute to the overall efficiency of the construction process.

Understanding this method is essential for bridge safety inspection and construction because it highlights the importance of formwork in achieving the correct dimensions and support for the deck, thereby reinforcing the structural stability of the bridge.