what are the regulations applies to drilling of wood joist and girders?

Regulations for drilling wood joists and girders typically include adherence to local building codes and standards, such as the International Building Code (IBC) or the National Design Specification (NDS) for Wood Construction. These regulations often specify allowable hole sizes and locations to maintain structural integrity and safety. Additionally, guidelines may dictate that any drilling should not compromise the load-bearing capacity and that proper reinforcement or blocking should be used if necessary. Always consult a structural engineer or building inspector for specific requirements related to a project.