Testing From November 24, 2003
The shelter was erected on a narrow end against the reaction frame in order to test the door assembly.
Missile Shot I – 70 mph
The missile impacted the center of the door producing 1/2 in. of deformation. The area had no other remarkable damage.
Missile Shot II – 68 mph
The missile impacted the bottom of the door producing a 1/2 in. of deformation. The door was not opened and there was no other remarkable damage.
Missile Shot III – 70 mph
The missile impacted the back left corner of the door producing 1/2 in. of deformation. Upon opening the door it was discovered that the two roller bearings had been shattered b y the missile impact and pieces of the wheels deposited into the safe compartment. It was unknown which missile impact produced the damaged wheels.
The shattered wheels constituted a test failure. It was recommended that the manufacturer replace the roller bearing type wheels with solid steel non-bearing wheels.