Residential uses for railing vary from support to aesthetics. Most public spaces are fitted with rails as a means of protection against accidental falls. Any abrupt change in elevation where the higher portion is accessible makes a fall possible.
Due to this responsibility and liability, rails are placed to protect people using the premises. Railings are generally required by code where there is a drop of 30″ or more. Railings may also be located at scenic overlooks.
Guard rails in buildings are numerous, and are required by building codes in many circumstances. Guard rails along stairways are common, and catwalks and balconies are also lined with them.