Fire dynamic simulator is a CFD model type of fluid flow run by fire. This software is used to numerically solve the Naiver-Stokes equation suitable for a low-speed kind of flow that puts prominence on smoke and the transfer of heat from fires. The output from the FDS and CFAST simulation is displayed using a visualization program known as smoke-view. This software has an evacuation simulation module called FDS+Evac that is used to simulate the locomotion of people in situations demanding evacuation. The main aim of fire dynamic simulator is to solve real-time problems involving fire in fire protection engineering. FDS is used in construction to design the phenomena below;- Heat transport at low speeds and fire combustion products- Heat transfer between gases and solid surfaces using radiation and convection.- Activation of smoke detector, heat detector, and sprinkler- Growth of fire and spreading of flames- Pyrolysis- Water suppression and sprinkler sprays