THE MEASUREMENT OP PIECE PRODUCTS 



473 



TABLE LXXIV 

 Maximum Sweep, Poles, Country 



TABLE LXXV 

 Dimensions tor Piling 



All classes of poles and posts are usually seasoned to decrease weight for trans- 

 portation. 



Fence stays are round or split pieces about 2 inches in diameter and 5 to 6 feet 

 long. They are used between posts for wire fences as upright pieces not set in the 

 ground, to which the wires are stapled to prevent their being spread apart by stock, 

 and to reduce the number of posts required. 



Converter poles, called also furnace poles and brands, are consumed in the process 

 of refining copper. The Montana specifications call for poles with a top diameter of 

 3 to 4 inches and length of 24 feet. They should have as little taper as possible. 

 Eastern brass mills use poles 25 to 40 feet long, 2 inches and over at top, and 5 inches 

 and over at butt. The bark is not removed and poles must be green. 



Standard California hop poles are made from split pieces 2 by 2 inches by 8 feet. 

 In the East hop poles are usually made from round pieces of approximately the same 

 dimensions. 



368. Mine Timbers. Mine timber can be classed as stulls and props, lagging, 

 shaft timbers and lumber, and mine ties. Stulls include round props used as posts, 

 caps to connect pairs of opposite posts, and girts to connect posts lengthwise of the 



