Roof Strength Test

Roof crush testing of one side of the vehicle one sided testing was performed from april 2001 through march 2008 on 75 passenger vehicles.

Roof strength test.

Roof strength the measure of roof strength was obtained from nhtsa s office of vehicle safety research roof crush test data. The model years of the tested vehicles ranged from 1997. Roof strength test overview roof strength evaluations consist of a quasi static test conducted on a vehicle s roof in a manner similar to tests used to judge compliance with federal motor vehicle safety standard 216 office of the federal register 2009. This astm testing procedure utilizes a calibrated spray rack with specific water pressures nozzles and distances to wet a wall with water at the rate of five gallons per square foot per hour.

To earn a good rating the roof must withstand a force of 4 times the vehicle s weight. In the institute s roof strength test a metal plate is pushed against 1 side of a roof at a constant speed. Astm e1105 and aama 501 2 test methods are good overall methods commonly used to test exterior walls sloped glazing and shallow pitched roofs to help identify leak sources.