2b Construction Classification

The most stringent of building types when it comes to fire resistance rating requirements a type i building including its roof must be composed of noncombustible materials like concrete and steel.

2b construction classification. Building occupancy classifications refer to categorizing structures based on their usage and are primarily used for building and fire code enforcement they are usually defined by model building codes and vary somewhat among them often many of them are subdivided. Ibc type iv is heavy timber construction and is considered iso class 2. Type ii b unprotected non combustible most common type of non combustible construction used in commercial buildings. The building elements shall have a fire resis.

3 hours modified fire resistive iso class. Type ii iia and iib. There are four classes of building. Fire resistance ratings shall be based on the test procedures of reference standard rs3 1 and shall apply to all occupancy groups except as specifically noted.

The fire resistance ratings of construction elements in hours listed in table 3 4 shall be used as a basis for classifying buildings and spaces by construction. 3 1 occupancy classifications 3 2 typical occupancies for occupancy. This type of construction in which the building elements listed in ibc table 601 are of non combustible materials such as concrete. List of tables table no.

Regardless of whether the ibc classification is a protected or b unprotected the iso class is 2. Types of construction type i this concrete and steel structure called fire resistive when first built at the turn of the century is supposed to confine a fire by its construction. Joisted masonry construction is iso class 2. Type iii a protected combustible also known as ordinary construction with brick or block walls and a.

Buildings and structures erected or to be erected altered or extended in height or area shall be classified in one of the five construction types defined in sections 602 2 through 602 5. 315 6 285 construction class ii e 316 0 art. Iso class 2 encompasses ibc type iiia and ibc type iiib. Classification of buildings as to type of construction.

Building constructed of non combustible materials but these materials have no fire resistance. The following is based on the international building code the most commonly used building code in the. Section 602 construction classification 602 1 general. 17 mixed construction 316 1 286 classification 316 2 287 restrictions c26 omitted from section numbers in this column.