Alterations to trusses require written approval of _____.

Alterations to trusses require written approval from a registered design professional because trusses are critical structural components that must meet specific engineering standards for safety and performance. A registered design professional, typically a licensed architect or structural engineer, has the expertise to assess the impacts that modifications may have on the integrity and load-bearing capacity of the trusses. Their approval ensures that any changes conform to local building codes, industry standards, and safety regulations.

While other parties, such as the manufacturer, general contractor, and building official, may play roles in the construction process, they do not possess the specialized knowledge necessary to adequately evaluate the engineering implications of altering trusses. The manufacturer may provide guidelines, the general contractor may execute the work, and the building official may enforce compliance with codes, but the input of a registered design professional is essential for ensuring the structural reliability of altered trusses.