Scenario Requirements

Reading time


To successfully conduct evacuation simulation, the scenario must meet the following requirements:

  1. The scenario must have at least one person and one exit that is not blocked. If there are no exits in the scenario, then people cannot evacuate; if there are no people in the scenario, then there is no one to evacuate. In both cases, evacuation is impossible.
  2. Building parameters are specified correctly. For details, see Setting Building Properties. If the building properties are set incorrectly, the Evacuation Start Time is determined incorrectly.
  3. Detector parameters are specified correctly. For details, see Detector.
  4. Evacuation simulation parameters are specified correctly. If the evacuation simulation parameters are not configured correctly, then some people may not evacuate. For more information, see Evacuation Simulation Parameters.
  5. Bottom levels of all objects on the scene are aligned with each other. If bottom levels of objects are not aligned, then some people may not evacuate.
  6. All objects are aligned horizontally. If not all objects are aligned horizontally, then some people may not evacuate.

Alignment of Bottom Levels of the Objects on the Scene

People can evacuate using horizontal levels as well as stairways and ramps.

To go from one horizontal level to another, people use a stairway or ramp, which connects these two levels, even if there is only 1 mm difference between them.

The horizontal levels that people can use are determined by the following objects on the scene:

  • Floor. A person can move in any part of the horizontal level determined by the level of the floor.
  • Floor slab and landing. A person can move only within the outlines of floor slabs and landings on horizontal levels determined by the upper levels of slabs and landings.

People can evacuate using horizontal levels only when there are no obstacles in their way.

A stairway connects two horizontal levels when its upper and bottom levels is aligned with those horizontal levels.

Examples of Alignment of Bottom Levels of the Objects on the Scene

  • One-flight stairway connecting two floors.
  1. The bottom level of the stairway is aligned with the level of the floor.
  2. The upper level of the stairway is aligned with the level of the upper floor.
  • A two-flight stairway connecting two floors.
  1. The bottom level of the lower flight must be aligned with the level of the floor.
  2. The upper level of the lower flight must be aligned with the upper level of the landing or floor slab.
  3. The bottom level of the upper flight must be aligned with the upper level of the landing or floor slab.
  4. The upper level of the upper flight must be aligned with the level of the upper floor.

Horizontal Alignment of Bottom Levels of the Objects

  • The upper and bottom edges of the stairway can be anywhere on the floor.
  • The upper and bottom edges of the stairway must be located in the contour of the floor slab or landing, or touch them along the their entire length. If there is a gap between the edges and the landing, then people are not able to pass through them.