Framing, Sheathing, and Insulation

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The series of concentric rings sur rounding the pith are formed by the growth of the tree, one ring being added on the out side each year; hence the name, annual rings. These annual rings, as shown in the enlarged s...