In case of a fire, even an exceedingly small hole in a wall or floor can result in dangerous, toxic smoke filling an adjoining room within minutes.
Firestopping requires the installation of tested and listed materials into the opening in barriers that have been fire-rated to restore the hourly ratings of fire-resistance.
Your building may have been built for fire-resistance, but when you make an opening in a wall or floor for a cable or conduit, the fire-resistance rating has been compromised.
Many considerations must be made for adequate pipe penetrations including proper installation, pipe movement, water containment, air tightness and sound.
Walls and ductwork require special penetrations as they are the largest contributor to potential fire spreading in a building