216 METHODS OF COMMUNICATION FOR FOREST PROTECTION 



surface at top, and having so done measure widest point from tape to surface of pole 

 and if, for illustration, upon a 25-ft. pole said widest point does not exceed 5 in., 

 said pole comes within the meaning of these specifications. Butt-rot in the centre 

 including small ring-rot outside of the centre; total rot must not exceed 10 per cent 

 of the area of the butt. Butt-rot of a character which plainly seriously impairs the 

 strength of the pole above ground is a defect. Wind-twist is not a defect unless very 

 unsightly and exaggerated. Kough, large knots, if sound and trimmed smooth, are 

 not a defect." 



Western Red Cedar Association Specifications 



"All poles must be cut from live, growing cedar timber, peeled, knots trimmed 

 close, butts and tops sawed square, tops must be sound and must measure as follows 

 in circumference: 



4-in. top, 12-in. circ. 7-in. top, 22-in. circ. 9-in. top, 28-in. circ. 

 5-in. top, 15-in. circ. 8-in. top, 25-in. circ. 10-in. top, 31-in. circ. 

 6-in. top, 18-J-in. circ. 



" No pole shall have more than one crook and this shall be one way only, the 

 sweep not to exceed 1 in. to every 6 ft. in length. Same to be determined in the fol- 

 lowing manner : Measurement for sweep shall be taken as follows : [Phat part of 

 the pole when in the ground (6 feet) not being taken into account in arriving at 

 sweep, tightly stretch a tape-line on the sidle of the pole where sweep is greatest, from 

 a point 6 ft. from butt to the upper surface at top, and, having so done, measure 

 widest point from tape to surface of pole and if, for illustration, upon a 30-ft. pole 

 said widest point does not exceed 5 in., said pole comes within the meaning of these 

 specifications. 



" Butt-rot in centre, including small ring-rot, shall not exceed 10 per cent of 

 the area of the butt. Butt-rot of a character which impairs the strength of the pole 

 above ground is a defect. 



"Large knots, if sound and trimmed smooth, are not a defect. 



"A perfectly sound, dead or dry streak shall not be considered a defect when it 

 loos not materially impair the strength of the pole." 



