Table 1505 1 requires minimum class b roof coverings for types ia ib iia iiia iv and va buildings.
Ibc class b roof coverings.
Wuic 504 2 roof covering.
The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.
Class b roof assemblies and roof coverings shall be listedand identified as class b by an approvedtesting agency.
Class c roof assemblies and roof coverings shall be listed and identified as class c by an approved testing agency.
Minimum class c roof coverings are required for types iib iiib and vb buildings.
Code interpretation this code implies that all roof materials that pass the testing provided in the astm e 108 fire testing under the light category are.
Class b roof assemblies class b roof assemblies are those that are effective against moderate fire test exposure.
Section 1505 4 class c roof assemblies class c roof assemblies are those that are effective against light fire test exposure.
For roof coverings where the profile allows a space between the roof covering and roof decking the space at the eave ends shall be firestopped to preclude entry of flames or embers or have one layer of 72 pound 32 4 kg mineral surfaced nonperforated cap sheet complying with astm d 3909 installed over the combustible decking.
The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures.
Class b roof assemblies are those that are effective against moderate fire test exposure.
Class b roof as semblies are those that are effective against moderate fire test exposure.
Class c roof assem blies are those that are effective against light fire test exposure.
Roofs shall have a class a roof assembly.
Class b roof assemblies are those that are effective against moderate fire test exposure.
The maximum flame spread is 6 feet for a class a rated roof 8 feet for class b and 13 feet for class c.
Examples of a class a roof covering include concrete or clay roof tiles fiberglass asphalt composition shingles and metal roofs.
Class b roof assemblies and roof coverings shall be listed and identified as class b by an approved testing agency.
Class b roof assemblies and roof coverings shall be listed and identified as class b by an approved testing agency.
1505 4 class c roof assemblies.
Class b roof assemblies and roof coverings shall be listed and identified as class b by an approved testing agency.
Over non combustible roof decks such as steel poured gypsum or concrete only the spread of flame on the top surface of the roof system is evaluated.
Bf 1505 4 class c roof assemblies class c roof assemblies are those that are effective against light fire test exposure.
