What is NOT allowed on a concrete structure during construction?

The correct answer indicates that construction loads are not allowed on a concrete structure during its construction phase. During this time, the concrete is still curing and gaining strength, and placing construction loads on it can compromise the integrity of the structure, leading to potential failure or unsafe conditions. It is essential to allow concrete to properly set and reach its designed load-bearing capacity before applying any significant weight.

In contrast, light equipment may be used selectively with caution, safety gear is absolutely necessary for protecting workers on-site, and material storage can be strategically managed to minimize risk while still allowing for some materials to be on-site. All of these options may be accepted under appropriate guidelines and circumstances, whereas construction loads pose a direct risk to the unfinished structure's stability and safety.