A3 - Varghese

1. Calculations of the "Methods of Joints"

2. Results of the truss analysis

Tension => +
Compression => -
FAy = 44.45 N
FAx = 44.45 N
Tab = -61.02    Tac = 40.83   Tbc = 61.02   Tbd = -81.66   Tcd = 61.02   Tce = 40.83  Tde = -61.02

3. Bridge Designer Replicate

4. Hand Analysis vs. Online Bridge Designer
When conducting a hand analysis it is possible to make a rough sketch where the members are not entirely equal to one another. On the Bridge Designer the length of each member and angles must correspond correctly in order to get the right scale quantities. Bridge Designer also corresponds length 2x2" for each block.

5. Bridge Designer Model of Knex Truss

6. Given the test information about Knex joints, I made some interesting observations regarding the pull of force of connectors and the tests. It gradually begins decreasing towards the midway point, but then increases as it passes the midway point. I also noticed that the pull out force increases with the increase in connectors for each mode. With this information, I can see that the number of connectors to the mode correlates to the pull out force for the bridge sustainability.