A permit is required to build and / or fire / a Trebuchet?
If it hesitates counter / state / etc, I live in Broward County, Florida. If a permit is required, where can I get my hands on one? Mind that the trebuchet is just going to be a little higher than 5 feet in position.
This can be regarded as a destructive "device. Check with local police and BATF. These devices are made more frequently than most people think (historical recreation, film accessories, engineering, projects). If you have a valid reason for the construction of a part, method exists to do so legally.