
18 BULLETIN 155, U. S. DEPARTMENT OF AGRICULTURE. 
were used with 6-foot spacing. Supports similar to the other cradle 
shown (fig. 7, B) have been used on a number of pipe lines. The 
Logan (Utah) city power pipe line rests on such cradles spaced 
4 feet center to center, with no mudsill blocks beneath the 6 by 6 inch 


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Fic. 7.—Cradles for carrying stave pipe. 

timber. The 48-inch pipe of the Portland Flouring Mills Co., at 
Dayton, Wash., is carried on cradles 12 feet apart, and while this 
spacing is unusually wide the support appears to be ample. 
Some large wood-pipe lines carried across rivers and ravines on 
bridges, or trestles of steel, are supported by cradles also of steel. 

