What step follows the pouring of concrete in the concrete building construction process?

After pouring concrete in the construction process, the subsequent step is to remove the forms that were used to shape and support the concrete as it sets. This is crucial because forms are temporary structures that help contain the concrete until it hardens sufficiently. Once the concrete has gained enough strength to hold its shape, which typically takes a few hours, the forms can be safely removed.

Removing the forms allows the construction team to assess the completed surface of the concrete, ensuring it meets the desired specifications and quality standards. Additionally, it marks a significant point in the construction timeline, as it indicates the transition from the forming phase to further construction activities, such as finishing, allowing for the next steps in the project to begin.

The other options, such as building framework, building steel reinforcement, or repeating for additional levels, are steps that either precede concrete pouring or involve subsequent phases of construction that occur after the forms are removed. Thus, removing the forms is the correct next step in the process.