Section 401
SECTION 401. Types of Construction. For purposes of this Code, all buildings proposed for construction shall be classified or identified according to the following types: (1) Type I. – Type I buildings shall be a wood construction. The structural elements may be any of the materials permitted by this Code. (2) Type II. – Type II buildings shall be of wood construction with protective fire-resistant materials and one-hour fire- resistive throughout: Except, that permanent non-bearing partitions may use fire-retardant treated wood within the framing assembly. (3) Type III. – Type III buildings shall be of masonry and wood construction. Structural elements may be any of the materials permitted by this Code: Provided, that the building shall be one-hour fire-resistive throughout. Exterior walls shall be of incombustible fire-resistive construction. (4) Type IV. – Type IV buildings shall be of steel, iron, concrete, or masonry construction. Walls, ceiling, and permanent partitions shall be of incombustible fire-resistive construction: Except, that permanent non-bearing partitions of one-hour fire-resistive construction may use fire-retardant treated wood within the framing assembly. (5) Type V. – Type V buildings shall be fire-resistive. The structural elements shall be of steel, iron, concrete, or masonry construction. Walls, ceilings, and permanent partitions shall be of incombustible fire-resistive construction.