What is the maximum height in feet that requires permanent ladders for access to appliances on roofs?

Permanent ladders are required for access to appliances on roofs that exceed 16 feet in height to ensure safe and reliable access for maintenance and emergency services. This standard is established to prevent accidents and to provide a stable means of reaching equipment that is installed at significant heights.

When the height of the installation goes beyond 16 feet, a typical portable ladder may not provide sufficient stability or safety due to its inclination and the potential for slipping or falling. Permanent ladders, which are anchored securely to the structure, offer a safer and more reliable way to access equipment installed on rooftops.

Additionally, regulations and building codes often stipulate requirements for safe access to roof-mounted appliances, which typically include safety features such as a cage or a fall arrest system for any ladders over a certain height. The threshold of 16 feet ensures that adequate safety measures are in place for those who need to perform maintenance or inspections on these installations.