10 July, 1911.] 



Silo Construction. 



503 



Material for a yo-ion Silo. 

 The following is a list of the material required for the 70-ton silo 

 specified : — 



Red-gum, 6-in. x 4-in. ; 8 6-ft., foundation posts. 



Hardwood, 4-in. x 2-in. ; 2 20-ft., 8 i6-ft., 3 lo-ft., purlins, studs, -ind 



scaffolding. 

 Hardwood, 6-in. x i^-in. ; 5 12-ft., scaffolding. 

 Hardwood, 4-in. x i-in. ; 2cp 20-ft., lining. 

 Hardwood, 4-in. x ^-in. ; 65 i8-ft., hoops. 



Hardwood, 3-in. x ig-in. ; 3 20-ft., ladder, uprights, and door cleats. 

 Hardwood, 3-in. x i-in. ; 2 20-ft., ladder treads. 



Galvanized iron, corrugated sheets, 26 gauge ; 16 g-ft. sheets, roof. 

 Galvanized iron, ridging, 26 gauge; 3 lengths i6-in., roof. 

 Galvanized iron springhead nails, 25-in. ; 3 lbs. 

 Bolts, nuts, and washers, 24 45-in. x |-in., for lapped hoops. 

 Bolts, nuts, and washers, 2 65-in. x |-in., ridge purlins to studs. 

 Bolts, nuts, and washers, 18 55-in. x f-in., purlins to studs, and studs to walls 

 Bolts, nuts, and washers, 16 8^-10. x ^-in., foundation posts. 

 ^Yire nails, 14 lbs. 2-in., 24 lbs. 3-in. 



Plate washers, 24 4-in. \ i-in. \ vi6ths-in., with ^-iGths-in. hole in centre. 

 Whitewash brush, i. 

 Cement, i bag. 



The cost of the above material in Melbourne at present prices is about 

 ^18 los. This does not include elevator material, which will be the same 

 as for the wood and iron silo. 



Additional Material for a 106-ton Silo. 



The 106-ton size, or any intermediate size, is made similarK. but each 

 upright liner must be in two pieces. As the joints have to be broken, one 

 portion must be longer than the other. For instance, for the 30-ft height, 

 use 20-ft. and lo-ft. uprights, and not two 15-ft. lengths. The io6-toiT 

 .silo is made the same diameter as the 70-ton size (15 ft.), but is .so ft. 

 in height. 



The following is the additional material for a ro6-ton silo: — 



Red-gum, 6-in. x 4-in.; 8 ()-ft. (No 6-ft. lengths required. 1 



Hardvvooii, 4-in. x i-in. ; 2(jo lo-ft. 



Hardwood, 4-in. x gin. ; 30 i8-ft. 



Hardwood, 3-in. x ig-in. ; 3 i:;-ft. 



Hardwoofl, 3-in. x i-in. ; i 20-ft. 



Bolts, nuts, and washers, 12 42-in. x §-in. 



Wire nails, 7 lbs. 2-in., i^^ lbs. 3-in. 



Plate washers, 12 4-in. x i-in. x c;-i6ths-in., with 7- i6lhs-in. hole. 



Thf' cost of this material, in Melbourne, would be about ^7. 



ALL STEEL AND CONCRETE SILOS. 



Particulars of th<' all steel and concrete silos will be gi\-en in the .August 

 issue. 



