To limit the probability that an inadequate ceiling height of rooms or spaces [i.e. less than 2.1 m high] will lead to collision with protrusions from ceilings, such as lighting fixtures, ceiling fans and low door heads, which could lead to harm to persons.
To limit the probability that an inadequate clear height of rooms or spaces [i.e. less than 2.0 m high] will lead to collision with protrusions from ceilings, such as lighting fixtures, ceiling fans and low door heads, in areas used infrequently or for a limited time, or where occupants are unfamiliar with the space, which could lead to harm to persons.
To limit the probability that an inadequate ceiling height of rooms or spaces [i.e. less than 2.1 m high] will lead to collision with protrusions from ceilings, such as lighting fixtures, ceiling fans and low door heads, in an emergency, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.
To limit the probability that an inadequate clear height of rooms or spaces [i.e. less than 2.0 m high] will lead to collision with protrusions from ceilings, such as lighting fixtures, ceiling fans and low door heads, in an emergency, in areas used infrequently or for a limited time, or where occupants are unfamiliar with the space, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.