If floor pans are elements in The Heiwa Challenge structure, they may be corrugated in any direction! Please note that fire is not required to inititiate the test! Just drop part C on part A, etc.
"But let us be clear: Al Qaeda killed nearly 3,000 people on that day. The victims were innocent men, women and children from America and many other nations who had done nothing to harm anybody. And yet al Qaeda chose to ruthlessly murder these people, claimed credit for the attack and even now states their determination to kill on a massive scale. They have affiliates in many countries and are trying to expand their reach. These are not opinions to be debated; these are facts to be dealt with". Barack Obama, Cairo, Egypt, June 4, 2009.
Luckily, The Heiwa Challenge is apparently still possible to discuss and execute, though. Good luck with your structures. Report your facts so we can deal with them!