78 



boring and traming which can possibh' be clone in advance should be made before the 

 members are creosoted. 



This recommendation of framing (including bolt holes) before treatment is the 

 one most often objected to as impracticable, or impossible or too costly. Actual and 

 continued trial has proved it practicable, at least on most ordinary construction on 

 San Francisco Bay, where, except for one company, all creosoting must be obtained 

 from a long distance. In ordinarily simple construction, bents can usually be sprung 



Fig. 27. (1) Section ot creosotctl girt, in which untreated wood was exposed in framing. 



(2) End view of same girt section as in 1, showing attack by Teredo which entered through 

 the untreated wood e.\posed by framing. 



enough to make such framing fit. It adds somewhat to the construction cost; but its 

 results are believed to justify its cost. 



When framing before creosoting of timber is impossible, all bolt holes should be 



