Structural integrity is created by curves and corners.
Strength on this pillar is created by 4 components, they are: 3 vertical bends (two folded ends and the corner in the middle) as well as the total gradual horizontal curve inwards (picture the entire roof as an arch, the sides are curved in slightly, creating strength).
If the horizontal dent/fold was only within a single side of the pillar (one flat face), than I would consider the integrity unaffected, if not even strengthened, but if the dent/fold crosses through one of the 3 vertical components, then 2 out of 4 structural points have been weakened, and I would consider looking elsewhere.
Strength on this pillar is created by 4 components, they are: 3 vertical bends (two folded ends and the corner in the middle) as well as the total gradual horizontal curve inwards (picture the entire roof as an arch, the sides are curved in slightly, creating strength).
If the horizontal dent/fold was only within a single side of the pillar (one flat face), than I would consider the integrity unaffected, if not even strengthened, but if the dent/fold crosses through one of the 3 vertical components, then 2 out of 4 structural points have been weakened, and I would consider looking elsewhere.
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