Monday - 03/ 02/ 2014 practical building bridge structure design

03/02/2014 - Monday - First me(Zin) and my classmate Ganosi used the pencil and A4 paper to draw the designed to the bridge. We name it "the Burmese Bridge" then build the prototype bridge using 7 paper straws, tape and blue tack.  Next, our tutor test the stiffness straw bridge by attaching a string to the middle of the bridge then slowly increasing the weight on the string until it's bent and fall.



We pick this design because it's one of the effective structure design can be used by less materials in  civil engineering as most triangle shape structure has more thickness then the other shape of structure. For example:









Tutor showed us in the lecture that the more depth of the material has more stiffness then the inner layer depth of the material. For example:

Calculation image above shows how the depth improves the stiffness of the structure.