... isR-0R-5R -10 R -15 R-20R-25R-30R-35R-404% MOISTURE = APPROX. R-2.00 PER INCH *8% MOISTURE = APPROX. R -1. 50 PER INCH * 12 % MOISTURE = APPROX. R -1. 25 PER INCH20" ;18 " ;16 " ;14 " ;12 " ;10 "8"6"DIAMETER ... build-ing material. . The tree as it existsnaturally is an almostperfect building material.” Chapter 1 Introduction Cross section of a treein magnification.2Big LogsIn the case of massive logs, ... 1 Introduction The Alaska Log Building Construc-tion Guide is written to help logbuilders, owner-builders,...