True or False: Double top plates are used only in straight runs and cannot be lap jointed.

The statement is false because double top plates can indeed be used in various configurations beyond just straight runs. They are designed to provide additional support, distribute loads effectively, and help align the framework of walls in a structure. Additionally, lap jointing is a common practice with double top plates, allowing them to be joined together at different lengths to accommodate framing needs, especially in instances where walls do not run continuously. This flexibility is crucial in modern carpentry, as it helps to create strong, stable structures while adhering to design requirements.

The structural benefits provided by lap jointing include continuity and load distribution, which enhance the integrity of the building. In practice, this means that builders can create walls and frames that not only meet local building codes but also adapt to specific design challenges, further showcasing the versatility of double top plates.