- Author
- Mitchell, N. D.
- Title
- Fire Tests of Wood-Framed Walls and Partitions With Asbestos-Cement Facings.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
- BMS 123, May 10, 1951, 16 p.
- Keywords
- walls | partitions | wood | asbestos | cements | fire tests | fire endurance tests | hoses | failure
- Abstract
- Three walls and four partitions with asbestos-cement facings on wood frames were subjected to fire-endurance tests and one wall and three partitions to fire and hose-stream tests. The partitions had asbestos-cement sheet facings on both sides over differing internal constructions. The edges of the studs of some of the partitions were lined with asbestos paper or gypsum-board strips. One partition has no insulation, four had mineral-wool batt fill between the studs; two had gypsum-board sheathing underlying the asbestos-cement sheet facings. The walls had matched diagonal sheathing, asphalt-saturated asbestos felt, and asbestos-cement shingles as the exterior facings. The interior facings were of asbestos-cement sheets or asbestos-cement insulated sheathing. Three walls had mineral-wool batt insulation between the studs. Fire-endurance limits for the partitions ranged from 9 to 90 minutes. Failure by a limiting rise of temperature was not a determinant in any of the tests of the walls. The fire exposures ranged from 38 to 85 minutes. Limits by failure under load for the walls ranged from 32 to 79 minutes. Failure from impact of the hose stream ocurred in one of three tests of the partitions and in the single hose-stream test of a wall.