What must forms and support systems be capable of bearing?

The correct answer reflects the critical responsibility of forms and support systems in concrete construction. Forms must be capable of bearing not just the weight of the fresh concrete mixture but also any additional loads that may occur during the construction process. Concrete, when newly poured, is in a fluid state and exerts significant pressure on the forms. However, the forms must also accommodate the weight of work crews and equipment involved in the construction process, as they contribute to the overall load.

Additionally, support systems must be designed to handle dynamic loads, which include the movements of laborers, tools, and any other equipment necessary for the placement and finishing of concrete. This ensures that the forms do not fail under the pressures and weights associated with both the wet mixture and any operational activities occurring around them.

Thus, it is essential for forms and support systems to be robust enough to manage both types of loads: the fresh concrete and any concurrent operations, ensuring safety and structural integrity until the concrete has adequately cured and developed the necessary strength.