Best Strength Feet I can fight off hand is
this, where he and Captain Black stop a buss from falling off a bridge.
In general, the higher end humans of JCA display the ability to shatter stones fairly casually. Jackie shattered the arms of a statue, Tohru tackles through stone walls in an aztec structure, etc.
Jackie's also capable of Blocking strikes from Shaowkhan who are able to struggle with a Captain Black who wielded the Ox Talismon.
Jackie could also block strike from the Dark Chi warriors, who could punch a vending machine hard enough to send it flying across a street.
Jackie also takes a lot of very high falls without significant issue.
Over all, I'm inclined to say he can take hits from Cap