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

E507        *Solder with specific tools only. Soldering may be done using an electric iron/gun only.

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.