how to build a pratt truss bridge with popsicle sticks
This is the updated design of my short pratt truss bridge made from popsicle sticks. the only difference from the original was the addition of 4 more popsicle sticks in key areas. i doubled up the angled sticks on each end, and made the lateral bracing into an x shape rather than a zig-zag pattern.. Structural engineering doesn’t get much simpler. the warren truss is tried and true, providing a bridge that’s easy to build, strong, and relatively lightweight. in 1850, squire whipple designed the first warren truss bridge in america. in this project, we’ll make a model warren truss bridge. light and strong, it can hold more than 100. This month's stembox culminates in two different bridge building activities. this video explores how to build a howe truss bridge. trouble shoot and learn here!. 
how to build a pratt truss bridge with popsicle sticks This goes for any model bridge design, not just the pratt truss. is the pratt truss any good for model bridges? the pratt truss design as pictured above is one of my favorites. i have used it often for my model bridges, including balsa, basswood, and popsicle sticks. it is easy to construct, and is a solid choice for a model bridge design.. Click here to see the new and improved version of this bridge. this is a popsicle stick bridge i built using the pratt truss design. this bridge is 13.5 inches long, 4 inches tall, and 3.75 inches wide. this bridge weighed about 70 grams and held 73 pounds before breaking. i used 46 popsicle sticks to build this bridge..
