Multi-Entry Escape Chute (Internal)
A Multi-Entry Escape Chute, is series of escape chutes, each equal to the floor height, starting on a specified floor, it falls to the same chute positioned in an identical location on the floor below, where the chute from above will then feed into an equal chute below.
As can be seen in the sketch to the left.
Most Multi-Entry systems today are being installed in High Rise Residential buildings of 30 to 48 floors, with each floor holding some 25 to 35 persons, these systems are being installed during construction, making them a very economical method of installation, and much cheaper than retro fitting a system.
Installation tends to be located close to the lift shaft and stair well as shown below.