1. Bridge Construction

2. Your Truss Bridge Drawing

3. Typical Bridge Joint 10mm x 10mm Tube6mm x 10mm Tube 4mm Bar

4. Schedule of Truss Members

5. Schedule of Gusset Plates

6. Prefabricate the Bars 1) Draw 31, 4mm parallel lines 2) Carefully cut, requires multiple passes

7. Prefabricate the Tubes Tube templates to be drawn on file-folder Tubes determine load carrying capacity

8. Tubes Continued Fold the tubes with a straight edge Rubber cement the flap and inside free edge

9. Finished Tubes

10. Structure Construction Pin the gussets, wood glue the bottom chord, trim and wood glue the diagonal bars

11. Done!! The completed bridge, ready for testing

12. Acknowledgements This presentation is based on Learning Activity #1, Build a Model of a Truss Bridge, from the book by Colonel Stephen J. Ressler, P.E., Ph.D., Designing and Building File-Folder Bridges