Which type of forms become part of the completed structure?

Stay in place forms are designed to remain as a permanent part of the structure once the concrete is poured and cured. These forms typically support the concrete during the curing process, but instead of being removed after the concrete has set, they become integrated into the final construction. This approach can enhance insulation properties, structural integrity, and reduce labor costs associated with form removal.

Temporary forms, on the other hand, are used solely for the duration of the concrete setting process and are removed after the concrete has cured. External skins usually serve as finishing materials for the building's outer layer and do not form part of the structural support. Insulated forms, while they may contribute to thermal efficiency, specifically refer to forms that are also left in place but are typically more aligned with insulation requirements rather than structural integrity.

Staying in place forms are therefore a crucial aspect of certain construction methods, particularly where structural needs and efficiencies are prioritized.