Noncombustible Construction

This Construction Brief will give you an overview of ISO's Construction Class 3 — noncombustible construction. When you‘ve completed this course, you'll know what an ISO report means when it says a building is noncombustible construction. And you'll understand why a particular structure is — or isn't — noncombustible.

Definition

• buildings with exterior walls, floors, and roofs of noncombustible or slow-burning materials
• building supports of noncombustible or slow-burning materials
• noncombustible or slow-burning roof decks on noncombustible or slow-burning supports — regardless of the type of insulation on the roof surface