The front leg of a metal, stackable chair collapsed under me when I sat on it. What are the metal tolerances which might or could have been lacking which made the chair leg so weak?
It is unlikely that the chair collapsed solely based on your weight. Chairs are designed to take compressive forces. They are not designed to be tilted where compressive forces would favour a single leg of the chair. My suspicion is that this chair was subjected to this improper usage either while you were using it or before you were using it. In any case, the chair would have to have been damaged or improperly used in order for it to collapse. The other possibility is that your weight exceeded the maximum allowable load rating of the chair.
