ISO 1
FRAME CONSTRUCTION
WOOD BEARING WALLS. WOOD BEARING ROOF. MASONRY VENEER, BRICK VENEER OVER WOOD FRAME
ISO 2
JOISTED MASONRY
MASONRY BEARING WALLS (BRICKS, BLOCK, MASONRY). WOOD FRAME ROOF AND FLOOR FOR MULTI-FLOOR, SLAB FOR SINGLE STORY.
ISO 3
NON-COMBUSTIBLE
LIGHT STEEL CONSTRUCTION. ALL STEEL BUILDING
ISO 4
MASONRY NON-COMBUSTIBLE
MASONRY BEARING WALLS. STEEL DECK ROOF. ONE STORY ON A CONCRETE SLAB. MULTI-FLOOR WITH STEEL DECK FLOORING
ISO 5
MODIFIED FIRE RESISTIVE
CONCRETE FLOORS AND ROOF WITH PROTECTED STEEL. 4 INCH SOLID CONCRETE. (UNPROTECTED STEEL)
ISO 6
FIRE RESISTIVE
MASONRY BEARING WALLS. CONCRETE FLOORS AND ROOF (NO EXPOSED STEEL). 8 INCH SOLID CONCRETE