Fire bridges are an important part of fire safety, as they provide a safe passage for people and equipment to escape a burning building. Fire bridges are typically rated according to their fire resistance, which is measured in terms of the amount of time they can withstand a fire before collapsing. The most common fire bridge ratings are A, B, and C, with A being the highest rating.

A-rated fire bridges are designed to withstand a fire for up to four hours, while B-rated fire bridges can withstand a fire for up to two hours. C-rated fire bridges are the least fire-resistant, and can only withstand a fire for up to one hour. Fire bridges are also rated according to their load-bearing capacity, which is the amount of weight they can support.

Fire bridges are typically made of steel or concrete, and are designed to be strong and durable. They are also designed to be fire-resistant, and are often coated with a fire-resistant material such as intumescent paint. Fire bridges are also designed to be easy to install and maintain, and can be customized to fit the needs of any building.

Fire bridges are an essential part of any fire safety plan, and can help to ensure the safety of people and equipment in the event of a fire. It is important to choose the right fire bridge for your building, as the wrong type of bridge could lead to serious injury or death in the event of a fire.