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Study was made of means for improving dwelling unit entrance doors as fire and smoke barriers; existing combustible doors and frames could be modified to enhance their fire resistance, but it did not appear practical to raise them to level of rated commercial fire door assemblies; fire retardant paints, except those consisting of heavy, reinforced, intumescent-type coatings, provided little or no increase in fire resistance; several modifications of existing doors were not effective in preventing transmission of smoke; however, controlling pressure levels on both sides of door, as by suitable venting, appeared to offer means of reducing smoke penetration into area; it is recommended that current methods of fire tests of doors, and criteria relating to their fire and smoke transmission be improved.
Study was made of means for improving dwelling unit entrance doors as fire and smoke barriers; existing combustible doors and frames could be modified to enhance their fire resistance, but it did not appear practical to raise them to level of rated commercial fire door assemblies; fire retardant paints, except those consisting of heavy, reinforced, intumescent-type coatings, provided little or no increase in fire resistance; several modifications of existing doors were not effective in preventing transmission of smoke; however, controlling pressure levels on both sides of door, as by suitable venting, appeared to offer means of reducing smoke penetration into area; it is recommended that current methods of fire tests of doors, and criteria relating to their fire and smoke transmission be improved.
Doors as barriers to fire and smoke
U S Bur Standards -- Bldg Science Ser 3
1966
10 pages
Standard
English
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