Before permanently fastening the building's frame, the frame must be:

The requirement that the building's frame must be plumb before being permanently fastened is crucial to ensure structural integrity. Plumb refers to the vertical alignment of the frame elements. When beams, columns, and other structural components are plumb, they ensure that the building will stand correctly and evenly under load. This alignment helps prevent problems such as uneven settling or structural failure in the future.

Having a plumb frame is essential during the construction process as it sets the foundation for the rest of the building. Even if other aspects of the frame, such as being level or braced, are correctly addressed, if the vertical components are not plumb, it can lead to significant issues, including distortion of the entire structure over time.

Other options, while important in their own right, serve different purposes. For example, securely tying is important for temporary support, and leveling is crucial for horizontal alignment, but neither addresses the essential vertical stability conferred by being plumb. Bracing provides lateral support to prevent movement during construction, but without establishing the plumb status, the entire structure's alignment can become compromised. Thus, being plumb is foundational to ensuring the frame is ready for permanent fastening.