The data and information contained in this Design Manual have 

 been prepared from the best available sources. However, the value 

 of the test data depends upon the control of so many variables, and 

 the application of the data depends so much upon skill and experience 

 that neither Owens-Corning Fiberglas Corporation nor Gibbs & Cox, 

 Inc. assume any responsibility, expressed or implied, for results ob- 

 tained in the application by others of the data and information contained 

 in this manual. These quantitative data and examples were prepared 

 with extreme care for general guidance and are accurate for the spe- 

 cific conditions and processing which pertained to the collection and 

 compiling of the data. 



