you reinforce the barricade...

You are inside Julie General Hospital, its empty wards criss-crossed with snapped quarantine tape. The building has been quite strongly barricaded
Using a filing cabinet, you reinforce the barricade.
Using some chairs, you reinforce the barricade.
Using a wheelchair, you reinforce the barricade.
You try to add some furniture to the barricade, but can't find a place for them.
Using an empty bed, you reinforce the barricade. It's looking very strong, now - any further barricading will prevent survivors from climbing in.
The building has been very strongly barricaded.
You say "Barricade as fast as you can they're comin in!!!!!!!!!!!!!!!!!"
Exhausted, you can go no further.