- Author
- Sigler, P. A. | Martens, R. I. | Koerner, E. A.
- Title
- Dimensional Changes of Floor Coverings With Changes in Relative Humidity and Temperature.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
- BMS 85, July 15, 1942, 9 p.
- Keywords
- floor coverings | humidity | temperature | tests
- Abstract
- The effects of changes in atmospheric conditions on the dimensions of floor coverings were investigated. The floor coverings tested included such general types as linoleum, cork, rubber, felt base, asphalt, strip wood, plywood, fiberboard, and several monolithic compositions, such as cement mortar and magnesium oxychloride. Dimensional changes due to a variation in relative humidity from 8 to 86 percent and those due to a variation in temperature from 32 deg to 90 deg F were determined. The floor coverings, testing equipment, and procedure are described, and the results are presented in graphic form. Changes in relative humidity affect the dimensions of many floor coverings to a much greater extent than do changes in temperature within the range usually encountered in structures. Such floor coverings as strip wood, linoleum, and felt base show a much grater dimensional change in the across-grain or across-machine direction than in the grain or machine direction. The several monolithic compositions showed relatively small changes in dimensions.