Hand, finger and arm injuries are probably the most common injury experienced, mainly due to the movement of large equipment through narrow openings. To lower the risk of cage movement often requires two people. Also note the best place to place your hands on the rack. Use the part of the rack that is facing you, instead of placing your hands along the side where they are not protected. Designing facilities with this large equipment in mind is very important so that adequate space is available.
Doorways are also important for another reason.
In most facilities, animal rooms are under negative pressure. It is difficult to maintain adequate closure for doors that open into the room. This next slide shows why it is not a good idea to have doors open out into the corridor. Collisions like this are a physical hazard. This slide demonstrates a rodent rack rolling over a floor drain.