Single-entry escape chute is permanently installed at a fixed location for used as Emergency Exit for building external evacuation system. The type mounted on the rooftop, balcony or corridor, window type, and other special evacuation opening from the building, which gives occupants access to the chute on that floor. It is intended to provide alternate paths of egress in the case of critical compromise of the primary path, and to provide additional paths of egress to alleviate congestion in the primary path - a more efficient evacuation sequence for the entire building. Egress path inside the chute tube protects Users from fire effects. One chute serves one floor. The maximum length of chute is 50m.