Bronks argued well.
He told you people put buildings together.
He explained clearly to you that all the pieces are small.
he told you people put in very small connectors to hold the pieces together.
All connectors fail because of one reason. Exceeding the limits of elasticity after deformation.
stated another way: excessive tension for the molecular condition extant at the time and duration the tension force is applied. Flocking included.
A cardinal source of such tension is TORQUE in this case.
The imploding was a succession of orderly bending and putting lateral tension on perimeter connectors.
You may now solve the problem being presented to you. Here are the questions:
1. What were the relative times of the two collapses?
2. What was the primary influence on this result? Hint: Count the floors above impact points on two identical buildings.
3. Where was the most Stress and Strain placed on given connectors?
4. Where was the greatest molecular degradation (permanent and non restorative) to connectors occurring?
5. Are the answers to 3 and 4 coincident?
Now turn to the "transfer" problem.
4. How was the design of the building done (focus on the floors you have determined in 2) to prevent the limits of elasticity of connectors from occurring in 3? Especially examine increasing size of elements to eliminate connectors in critical places.
5. Re-examine how the answer to 1. demonstrates that it was a foregone conclusion that the buildings would collapse even before the incident occurred except for what limiting case(s)? From this, determine what records to find and to look at to determine if the event planners gave proper instructions to the implimentors.
Extra credit:
a. At what altitude would flight 93 have to be disabled (open the hull) to deposit the fartherest found remote luggage (7 miles) of flight 93.
b. Who was in the air at the time from Dayton?
