Contest day checklist for balsa bridge builders

Short answer: bring the bridge, the rules, a way to measure and weigh it, and anything the rules let you repair it with. Check every limit one more time before check-in.

Bring

• The bridge in a rigid box. See transporting it.
• A printed copy of the rules and your limits sheet, and any written answers from the organizer.
• Registration papers and team names, if required.
• A ruler or tape and a scale, to check the limits.
• Spare sticks, glue and a knife, if repairs are allowed.
• Safety glasses.
• Your design notes and test records, if there is an interview. See explaining your design.

Check before check-in

• Length, width and height, against every limit.
• The clear space, with the real loading pieces if you have them.
• The mass, with a margin.
• The span, so the bridge rests properly on the supports.
• Loose joints or cracks from the trip.

During the event

Stay calm, follow the judge's instructions, and ask when something is unclear. Take a photo of the bridge before and after loading.

See also reading your rulebook.