The Mathematical Bridge

Public summary: 

Self supporting bridges using only wooden poles.

How can a bridge stay up without bolts?
Useful information
Kit List: 

10 long poles
5 short poles
Optional pick up sticks

Packing Away: 

Who knows


This idea can be extended to even more poles using the same construction procedure.
Downwards force causes members to interlock due to sheer and bending.

Risk Assessment
Date risk assesment last checked: 
Wed, 12/12/2018
Risk assesment checked by: 
Date risk assesment double checked: 
Mon, 04/02/2019
Risk assesment double-checked by: 
Conor Cafolla
Risk Assessment: 
Hazard Risk Likelihood Severity Overall Mitigation Likelihood Severity Overall
Sticks People use them as swords/lightsabers/maces/etc 4 4 16 Keep close eye on children, firm warnings if they try anything 2 3 6
Bridge Not weight bearing, people may stand on it and it collapse, could topple sideways onto someone 4 4 16 Make sure bridge held by demonstrator, warn people not to stand on it, don't use in high wind. 3 2 6
Entrapment Catching fingers between poles when assembling bridge 3 2 6 Demonstrator to warn people about their fingers and where not to put them. Make sure no weight put on bridge. 2 2 4