Floor Assemblies In Type Construction

For example type iiia requires the floor construction to be rated for 1 hour while type iiib has.

Floor assemblies in type construction. Adding a concrete layer on top of a lightweight floor assembly an approach for reducing sound transmission was found to reduce the fire resistance by 12. The details of type iv construction shall comply with the provisions of 602 4 1 through 602 4 7. Type iii construction is that type of construction in which the exterior walls are of noncombustible materials and the interior building elements are of any material permitted by this code. Horizontal assemblies separating dwelling units and sleeping units shall be not less than 1 2 hour fire resistance rated construction in a building of type iib iiib and vb construction where the building is equipped throughout with an automatic sprinkler system in accordance with section 903 3 1 1.

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. The period of time a building element component or assembly maintains the ability to confine a fire continues to perform a given structural function or both as determined by tests or methods based on tests as prescribed in section 703. As defined in the ibc frt wood is any wood that is impregnated with chemicals by a pressure process or other means during manufacturing and meets stated performance requirements. The type of gypsum board mentioned in the construction description re ects the type of board used in the acoustic test reports.

One difference between a heavy timber type iv building and type iii construction is that a heavy timber type iv building does not have plaster walls and ceilings covering the interior wood framework. The floor and roof are plank board. All wall assemblies are considered non load bearing unless otherwise speci ed. The interior floor framing is typically protected gypsum in fire resistance rated assemblies as required by the code but is not required to be of frt wood.

Consult listed re references for speci c gypsum board type and brand to obtain listed performance. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly.