r f E ^ E ^ 6E 



M !$& E *q0 



WHICHEVER 

 IS THE LEAST 

 DIMENSION 





•T\o^ 



SPLITS 



<^ 



Q^K 



E- MEASURE BETWEEN LINES 

 PARALLEL TO THE EDGES 



F- MEASURE LEAST DIMENSION 



r 



F- MEASURE LEAST DIMENSION 



G- MEASURE ALONG CORNER OR 

 MEASURE SIZE MOST NEARLY 

 REPRESENTING DIAMETER OF 

 BRANCH CAUSING THE KNOT 



KNOTS 



Figure 60. Defects affecting strength of lumber (American 

 Institute Timber Construction, 1974) . 



240 



