Testing Wood Doors for Stability and Strength

Methods of testing doors are of three general types: stability tests, strength tests, and impact tests. The stability tests include exposure to changing moisture conditions and exposure to differential moisture conditions. The strength tests include static loading and racking parallel. The impact tests include falling ball, and impact by a 10-pound sandbag. Flush doors with glued faces were noticeably stronger and stiffer than conventional panel-type doors when subjected to racking tests. Hollow-core doors with thin covers were susceptible to damage under impact of the falling ball. Impact by sandbag had damaging effects on most of the doors tested.

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