1. Rapid fire and smoke spread. fire and smoke can spread to the upper floors very rapidly through staircases, elevator shafts in a very short time if the fire and smoke control measures are not adequate.
2. Difficult firefighting and rescue. the height of the building, the inadequate firefighting equipment and firefighting at an elevated height certainly increase the difficulties.
3. Difficult safe evacuation of the occupants.
4. Fire usually lasts for a quite long time. Fire lasts longer in a high-rise building. Therefore, high-rise building fire often lasts longer and sometimes it may spread to the adjacent buildings.