Nodes are the points of connection where your bridge will endure stress.
Balsa wood bridge designs with measurements.
The bridge should also be open enough that you can push a simulated vehicle across the bridge span.
The bridge members will be composed of balsa wood with no member having dimensions greater than 1 4 inch by 1 4 inch and 24 inches in length.
Exceptions are made at the joints see below for details.
Keep the log of all your bridge designs so that you can learn from your mistakes.
The k s were the most challenging part of the build because i had to calculate each ones length and the approximate measure of the angle i had to cut into each one.
Then use your final drawing to trace the different pieces you ll need onto the balsa wood.
A member is defined as a single piece of balsa wood.
Measure and cut 7 two inch pieces of balsa wood.
Build your bridge in clean and well lit area.
These will serve as the vertical supports for the trusses.
Before building bridge create elaborate design plan that you will try to execute.
To build a balsa wood bridge start by drawing the blueprints for your bridge to scale on a sheet of graph paper using either a truss or arch design.
For this balsa wood bridge i used a k truss design with seven vertical members and 6 k trusses per side.
Wood glue used for carpentry and residential use.
Since your wood is 1 8 inch wide your structure should have 1 8 inch wide trusses.
Balsa wood bridge tips.