E506        *No brazing or welding. Brazing/welding is prohibited.

E504        *No sparks or flames. Tools that throw sparks or produce open flames are prohibited.

E505        *Nothing too big. Floor standing power tools are prohibited.

E508        *Structures must be safe. Teams may not build any structure that supports the weight of people or stores items overhead. Structures may not block or inhibit fire sprinkler systems or otherwise be unsafe.