Restricting the maximum mass of the bridge.
Balsa wood properties, while the bridges can be made from various types of woods, balsa remains one of the most popular because of its core properties.
If you are making your bridge for a competition, be ready to see it break.The core forces that govern the stability of loaded and unloaded bridges are.Each bridge will be judged by a panel of practicing civil engineers for quality of construction and application of engineering principles and then each bridge will be tested to destruction.Cons of balsa wood material: Weaker than some other types of wood It can have inconsistent density, which may lead to unexpected buckling or snapping when under strong load The best alternative to balsa wood is bass wood.Pictures and Videos of past contests.Setting the limits on how long balsa wood bridges have to be dried before they can be deemed eligible for competition.Last update: November 15, 2017.Will I get my bridge back?Bridge Day Presentation, click on link to view a video.The best way to analyze what has caused the destruction of your bridge is to record the test using the high-framerate camera (many modern smartphones support this feature).All Junior High School Science Classes (Grades 7 - 9) throughout Newfoundland and Labrador are invited to participate in the Annual Model Bridge Competition sponsored by pegnl.Restricting the building techniques of the bridge (for example, banning the use of parallel joining pieces).
Limiting the types of glue that can be used for connecting pieces of balsa wood.
Compression (pressing of the bridge component into itself, which eventually leads to buckling) and.
Can tongue deal man store depressors, stir sticks, etc.Students can participate individually or in teams - the maximum being 4 discount windows students per team.Be used to build the bridge?My school isn't participating, can I still participate?Some devices of this type can also exert predetermined forces or patterns of forces on the bridge.