This morning I conducted a two-hour lesson, introducing engineering structures to my new student. We built a bridge out of popsicle sticks while learning truss concepts and how bridges work!
Here is my brief explanation comparing a single beam and a truss: A single beam (like a popsicle stick) spanning any distance undergoes compression and tension. The very top of the beam gets the most compression, and the very bottom of the beam experiences the most tension. But the middle of the beam experiences very little compression or tension.
A truss has the ability to dissipate a load through the truss work. The design of a truss, which in this case - a triangle, creates both a very rigid structure and one that transfers the load from a single point to a considerably wider area.
Enzo did a mini presentation to his parents by the end of our lesson and explained clearly as to why a truss is more rigid than a single beam. Well done! 👏🏻 He is a quick, yet passionate learner, currently studying primary level at the Green School.