Section 603 contains a list of 26 items that refer you to other sections of the code that allow you to use the materials in this section. This may not make sense as to the purpose of this if you look only at chapter 6, but if you consider chapter 5, you'll see that you can have a larger building with the added fire protection, without going completely to a fireproof building like Type II. Type I construction requires the highest fire resistance rating, while type V construction requires the lowest amount of fire resistance rating. A higher building type rating provides a higher level of safety to its occupants in the event of a fire; however, the cost of building with this level of fire resistance can be much more expensive than a lower building type classification.
Type V construction is one in which the structural elements, the outer walls and the inner walls are made of any material allowed by the code, combustible or non-combustible. The best way to identify a building is during pre-planning, but there are different characteristics that will help firefighters identify the type of building when they arrive at the site. Stair crews should frequent Type 1 buildings in their area and be familiar with the systems they may encounter (elevators, heating, ventilation and air conditioning systems, fire pumps, etc.). The most common types of roof systems in a commercial type 3 construction environment include parallel cable truss systems and panel roofs.
It is essential to correctly classify a building by its type of construction to take into account the response that a building will have to a fire that occurs inside the building as a result of the occupation it serves. The different construction classifications are found in Section 602 of the International Building Code. Firefighters should be suspicious of type 2 construction in newer commercial structures (both in large buildings and in shopping malls). If you approach a building with no signs of unreinforced masonry, firefighters should probe the walls to determine the type of wall before climbing to the roof.
Each type of building has specific characteristics that staircase companies must know in order to be able to ventilate the building as safely and efficiently as possible. Chapter 6 of the International Building Code (IBC) outlines the requirements to correctly classify a building by its type of construction. Whether conventional or lightweight, vertical ventilation in type 3 buildings is feasible and can be very effective. Therefore, the type of construction is based on the period of time it takes for each element of the building to withstand a fire or to continue performing its structural function.
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