Roof Strength Test

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. The force applied relative to the vehicle s weight is known as the strength to weight ratio.

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In the institute s roof strength test a metal plate is pushed against 1 side of a roof at a constant speed.

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. 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. 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.

Roof strength the measure of roof strength was obtained from nhtsa s office of vehicle safety research roof crush test data. The main differences between the procedure specified by the insurance institute for. In the test the strength of the roof is determined by pushing an angled metal plate down on one side of the roof at a slow but constant speed and measuring the force required to crush the roof.