Though you may not have paid much attention to this fact, you have probably noticed that most front doors on residential houses open inward while most doors on public and commercial buildings open outward. The reason behind this is basically one of safety.
Residential doors that open inward have hinges inside the house, which make it more difficult for burglars and other intruders to damage a door and enter your home. Public buildings, on the other hand, have a greater concern. They need doors that open outward so that, in case an emergency occurs, it is easier for large crowds of people to exit quickly. You may have also noticed that emergency exits feature those wide “panic” bars instead of door knobs or levers, and that is for the same reason.
Interesting, right? Read more.