metal barrier falling Thread - Zombie Colony mod for Half-Life 2

This isn't really a bug, and you may have intended it to be like this. I was placing gate barriers (white ones) right infront of where the doors shut, when I bumped one of the metal barriers leaning on the walkway that overlooks the entrance. The barrier fell down, hitting and instakilling me.

Those are wood barriers and while they aren't meant to kill you, they are func_physboxes. My intent when creating the map was that the survivors "trick" the zombies into thinking the base was just another storefront.