670 Journal of Agriculture. [11 Oct., 1909 



whole work of erection, including construction of elevator, should be com 

 pleted within four or live days. After the silo has been erected some time,. 

 and the greenness of the wood considerably lessened, the whole of the wood- 

 work, and in any case, the lower 3 feet, including both treble hoops, should 

 be tarred or painted. The inside of the iron should be lime-washed, as it 

 is nailed on. Supports, such as blocks of red-gum, bricks, &c., should 

 be put under the centre stud of each bay, and it is well to put such sup- 

 ports under every stud except those, of course, bolted to the foundation 

 posts. It is a good idea to bolt with 8-in. x |-in. bolts to centre stud 

 of each bay and treble hoops, a 4-ft. post of 6-in. x 4-in. red-gum, or 

 suitable round timber, sunk i foot in the ground. 



To raise the height of an existing silo', the new .studs should be halved 

 for a length of about 2 feet and nailed with two 4-in. nails on to the 

 sides of existing studs. This means that all the studs are 2 inches out 

 of line with the existing ones. This will allow for boring and fixing the 

 new studs without removing anvthing except the roof. The hoops close 

 to the ground must not be covered with earth ; thev are an essential por- 

 tion of the structure, and should not be weakened bv rot or white ants. 

 The floor mav be the earth levelled off, or a conrrete floor mav l)e put in. 



A 100-ton silo is similar in most respects to a 60-ton, having the 

 same diameter, but being 30 feet high. The foundation posts ha\e a 

 9-ft. post instead of 6-ft., and are sunk 2 ft. 6 in. in the ground. In 

 all other respects thev are similar to the posts for a 60-ton silo. There 

 are thirty-two 21-ft. studs, six 14-ft. and twentv-six ii-ft. The boring 

 on the 21-ft. studs is the same as for a 60-ton silo, but have in addition 

 a i-in. diameter hole 5 ft. io| in. from the bottom of the stud for the 

 third treble hoop. The checks are similar in all respects up to the sixth 

 except that the bottom of the seventh and last check on the 21-ft. studs 

 is 20 ft. 2% in. from the bottom of the stud. The 14-ft. and 11-ft. 

 studs are halved for 2 feet of the length from the bottom, and il-in. 

 diameter holes are bored and countersunk at 2 ft. 11 in., 5 ft. 10 in., and 

 8 ft. 9 in. from the bottom, and checked similarlv to 21-ft. studs at 

 I ft. 2\ in., 4 ft. \\ in., and 7 ft. o\ in. from bottom of studs to bottom 

 of checks. The 14-ft. and ii-ft. studs are nailed to the side of 21-ft. 

 studs at the halved ends with two 4-in. nails to each stud. The last 

 check on the 21-ft. stud should then line with the first check on the shorter 

 .studs. The 14-ft. studs take the place of the 24-ft. studs in a 60-ton 

 silo. There are five port holes. The elevator, which is 40 feet long, is- 

 supported in two places, as shown in drawing, the bottom support being, 

 a frame-work constructed of 4-in. x 2 -in. hardwood consisting of two 

 i2-ft. lengths at sides, i8-in. length at top, and a 5-ft. length at bottom,, 

 al! well nailed together. The top snpjKMl is similar to that fur a 30-ft. 



elevator. 



The following is the additional material for a loo-ton silo: — 



Red-gum, 6-in x 4-in.; 8 Oft. (Xo (I ft. lun<fth.s it'imircil. I 



Hardwood, 4-in. x 2-iii ; (I 14 ft.. 27 11 -ft., (i '21 -ft. (No 24ft. lengths reqniicd ) 



Hardwood, (i in. x .\-iii. : 30 IS-ft. 



Oregon, .S-iii. x 1-in. ; 2 I.') ft. 



(Jalvanized .slieet iron, 24 72-in. x .'?(i-in., 24 gauge. 



Bolts, nuts, and \va.'*hers — 8 8-in. x ^in , 24 I^^^-in. x jj-in., 70 22-in. x s-in.. 4 4-ii6 



X §-in., 12 .'?-in. x § in. 

 Plate washers, 6 /J-in. x 1-in x f\"i"-> with ij-in. liole. 

 Nails, .S 1J)S 4-in., 2 Ihs. 2 in. 

 Wire clouts, 3 lbs li-in., 2 lbs % in. 



