Skip Ribbon Commands
Skip to main content

1J40.80 - Truss Bridges

The Web Part cannot find an InfoPath form in the specified location. Either the location does not have an InfoPath form associated with it or it is on a different site collection. Modify the Web Part Properties and select a list or library on the current site.

​1J40.80 - Truss Bridges

Title1J40.80 - Truss Bridges

​Demonstrate the strength and rigidity of various truss designs under a heavy load.

Assembly Instructions

​Obtain one or all seven bass wood truss bridges from the demo lab. Their lead-shot filled toy ambulance (1Kg), and deflection stand.

Setup Time5
Operation Time10
Preview Time10
Operation Instructions

​Place the bridge down so that your audience has a clear view of the truss design and deflection of the bridge under load. Carefully place the deflection stand on either the left or right side of the middle. Take note of its angle, typically 0 not under load. Gently place the toy ambulance on the truss bridge, and slowly rolling it to the middle to show an increase of deflection. Take note of the change of angle on the deflection stand. Varies from 0-10 degrees depending on the truss design.

Demo on DimeNo
PIRA 200No
Export Instructions (if different)

​Dividing the cantilever of the brige in half reduces the angle of deflection most.

Category1 Mechanics
Subcategory1J - Statics of Rigid Bodies
Keywordstruss, bridge
Construction Information
Bass Wood Bridges
Toy Ambulance
Deflection Marker
camera - color