Construction of All-Wood Silos. 



415 



When this lumber is put on in the seasoned condition a 

 single layer would make tighter walls than can be secured 

 with the stave silo where the staves 

 are neither beveled nor tongued and 

 grooved. 



In the silos smaller than 18 feet in- 

 side diameter the two layers of boards 

 outside will give the needed strength, 

 but when the silo is larger than this 

 and deep there would be needed a 

 layer of the split fencing on the inside 

 for strength ; and if in addition to this 

 there is added a layer of 3-ply Giant 

 P. and B. paper, a lining of very su- 

 perior quality would be thus secured. 



Lining of Half-inch Boards and 

 Paper. Where paper is used to make 

 the joints between boards air tight, as 

 represented in Fig. 207, it is ex- 

 tremely important that a quality 

 which will not decay and which is 

 hoth acid and water-proof be used. A 

 paper which is not acid and water- 

 proof will disintegrate at the joints 

 in a very short time and thus leave the 

 lining very defective. 



Great care should be taken to have 

 the two layers of boards break joints 

 at their centers, and the paper should 

 lap not less than 8 to 12 inches. 



The great danger with this type of 



Fio. 206. Showing the 

 construction of the all-wood 



lining will be that the boards may not in runmng up and down, 



n ., " and nailed to girts cut in 



DreSS the tWO layers Of paper together between the studding every 

 i i i . ii . four feet. 



close enough but that some air may 



rise between the two sheets where they 



overlap and thus gain access to the silage. It would be an 



excellent precaution to tack down the edges of the paper 



