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Chapter 27 



BOLT DIAMETER (INCHES) 



Figure 27-8. — Relationship of bolt diameter (inside bark at small end) to the number of 

 standard rough cords required to scale one Mbf by the Doyle log rule. Bolts were oak 

 sp., sweetgum, and yellow-poplar 26 to 72 inches in length. (Drawing after Redman 

 1957.) 



