Concealed Cavities In Wood Floors

Fire protection of concealed spaces cavities hidden voids in the construction of a building provide a ready route for the spreading of smoke and flame.

Concealed cavities in wood floors. Concealed spaces or cavities in a building provide a ready route or flue for smoke and flame to spread undetected thus increasing the risk to life safety of occupants in the building. Addressed possible fire spread within the cavities or concealed draft openings in wood frame construction. This is particularly so in the case of voids above other spaces in a building such as those above a suspended ceiling or in a roof space and ventilated facades. This is particularly so in the case of void spaces above a suspended ceiling in a roof space or in a raised floor system.

The international building code ibc requires all buildings containing group r occupancies to have sprinklers throughout. Without the presence of the fireblockingfire in a concealed space could spread through interconnected concealed spaces as. Wood structural members can shrink to 19 moisture content as the wood sea sons. Stud cavity subfloor finish material 1st flr stud cavity fire in wall cavity walls.

Afpa has recommended subdividing the large concealed spaces by draftstopping with materials such as wood sections or. Cavities are usually painful and they can be easily spotted by a dentist. However there are some hidden cavities that are harder to spot.