"If you destroyed the stairs, how would more survivors get up? and if we had to leave for any reason we couldn't take everything we needed. but good idea :)"

"Good idea :P I could cut in half the ladder that leads to the third floor, except it probably wouldn't be tall enough. "

"is there an external fire escape?
and if your on the third floor barricading the window might not be necessary
"

"You might not have to worry about people coming to your apartment. But I see an apartment as kind of a bad place as a BOL, but only because the city it's in.
Anyway, could you safely tear down drywall separating apartments, that way you don't have to go through the hallway to access all the rooms people might be moved out of?

What about food?"

"Ok. What if they refuse to do as you tell them?

And do you have metal plated 4 paned glass lying around, or know where to find it?"