[fyfy18]

Take a look at some of the European armoured doors, especially those in Italy. The door and frame come as a single piece, where the frame is made from hardened steel. I assume the door is too, but they are covered in some sort of veneer.

There is a basic cylinder lock which needs a 90 degree turn from the key outside, or the knob inside. Then there is the deadbolt mechanism which needs to be turned five or so times, and drives 1/2" steel bolts deep into the frame.

http://is.alicdn.com/img/pb/172/617/299/299617172_794.jpg

(Something like "normal", but this is a cheap Chinese knock off)

A few years ago a neighbour called the police because their son had locked himself in the apartment and they thought he was a suicide risk. They brought in the fire department to break in, but rather than cutting through the door, it was easier for them to cut through the masonry wall. Windows here are typically just as secure with triple glazing and multi-point locking as standard, and this was the third floor.

[2rsf]

> cut through the masonry wall

some emergency services uses an hydraulic device [1] to open steel doors

[1] https://www.youtube.com/watch?v=NjluIosPWiA