We generally do blast mitigation to minimize damage to the equipment around the pad. The calculation was that the equipment was built in such a way that it wou

We generally do blast mitigation to minimize damage to the equipment around the pad. The calculation was that the equipment was built in such a way that it would survive. And indeed the equipment only suffered minor damage, and that was from the unexpected flying debris, not the blast. I'm not aware of a previous case where the concreate launchpad shattered similarly to this. The closest thing to this possibility that I am aware of being discussed in advance was the possibility that the whole rocket could explode on the pad in a large fireball. Which existing blast mitigation techniques would not have helped with much.