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Simple roof truss experiment.
Two of the most used truss bridges are of the pratt and howe design.
We are loading a truss made of aluminum as shown in figure 1.
An example of using the technolab tm test rig for the seven bar truss experiment.
While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.
In this experiment we have tested which type of truss bridge is the strongest yet uses the least amount of material.
The most elementary 3d space truss structure is the tetrahedron.
Is a family owned and operated designer and manufacturer of wooden roof trusses in north central idaho.
Statics cive1187 uploaded by.
Royal melbourne institute of technology.
Through our experiment it was found that the bridge design that minimized the maximum compression force was the howe bridge.
Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs.
Four strain gages are attached to four of the members of the truss.
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Experiment 3 roof truss 2.
Roof truss statics lab.
If you re trying to reinforce a shed or gable roof use a simple king post truss design which has a single vertical joist running through the center of the triangular frame.
The members are connected with ball and socket joints.
Lead in to the direct stiffness method and an introduction to the finite.
Simple space trusses can be obtained by adding 3 elements at a time to 3 existing joints and joining all the new members at a point.
For larger structures like floors roofs or decks try a fink truss design which has internal joists arranged in a w shape for extra support.