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Temperature distribution in a nailed gypsum‐stud joint exposed to fire
Author(s) -
Fuller James J.,
Leichti Robert J.,
White Robert H.
Publication year - 1992
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.810160206
Subject(s) - oriented strand board , gypsum , structural engineering , stiffness , composite material , finite element method , fire performance , materials science , joint (building) , fire test , framing (construction) , nail (fastener) , engineering , fire resistance
Performance of wood‐stud walls depends on the integrity of nailed connections between the sheathing and the framing members. The performance of nailed connections has been studied at room temperature, but the effects of intense thermal loads, such as those from fire, are still poorly understood. This study examines the temperature distribution within nailed joints exposed to fire; this information is essential in modeling strength and stiffness of connections in wall systems. The finite‐element method was used to determine the effects of wood density, nail size, and type of gypsum board on temperature distribution within a set of connections. Temperature distributions were verified in nailed joints exposed in fire tests conducted in accordance with ASTM E119‐88. The principal path of heat flow through the connection was along the nail, rather than directly through the interface between gypsum board and wood. Wood species, type of gypsum board, and nail length did not change temperature distribution significantly.