2 Construction Classifications Type I Fire ResistiveType II NoncombustibleType III OrdinaryType IV Heavy TimberType V Wood-Frame
3 Type I Fire ResistiveMaintains structural integrity thus allowing occupants to exitConsists mainly of reinforced concreteStructural members(walls, columns, beams, floors, roof) protected by blown on insulation or automatic sprinklersFire-resistive compartmentation
5 Primary Hazards Contents of the structure Interior finishes Difficult to ventilateDifficult to breach for access or escape
6 Type II Non-Combustible Same as Type I, except that structural components lack the insulation or other protection.All metal buildings fall into this classificationMaterials without fire resistive ratings may be used in limited quantitiesOften have flat, built up roofs
8 Primary Hazards Contents of structure Interior finishes Fire extension to the roof can eventually cause the entire roof to failUnprotected structural steel components may fail due to heat
9 Type III OrdinaryExterior walls or structural members are made of non-combustible or limited combustible materialsInterior structural members are completely or partially made of woodRelatively easy to vertically ventilateResists fire spread from the outsideFor instance… This station.
11 Primary Hazards Fire spreads through concealed spaces Interior structural members vulnerable to fireSusceptible to water damage
12 Type IV Heavy TimberInterior and exterior walls made of non-combustible or limited combustible materialsOther interior structural members are made of solid or laminated wood with no concealed spacesUsed in old factories, mills, warehouses, and old churches… ski lodges… log homes etc.
14 Primary HazardsMassive amount of combustible contents can produce massive amounts of heatSusceptible to fire spread from the outsideSusceptible to water damage
15 Type V Wood FrameStructural components are made completely or partially of wood or other approved materialsCommonly used to construct typical single family residences and apartment buildings up to seven stories.Easily breached for access, ventilation, or escapeResistant to collapse from earthquake
17 Primary Hazards Susceptible to fire spread from the outside and in. Susceptible to total collapse due to fire or explosionContents of structure (Furniture, Carpet etc. burn hot and produce large amounts of toxinsLightweight wooden trusses
18 Non-Standard Construction Many parts of North America allow non-standard buildings to be constructed under certain circumstances.Structures do not conform to any of the standard construction typesUsually found on large properties in remote areasOne example is “hay bale construction”Name another non-standard construction example…?
19 Firefighter hazards related to building construction Fire LoadingCombustible furnishings and finishesRoof coveringsWooden floors and ceilingsLarge open spacesBuilding collapse