396 



Rural Architecture. 



hill a depth of 11 or more feet can easily be secured. 

 Placing the silo deep saves elevating the silage so high 

 when filling and a large portion of it is below frost. 



FIG. 196. Showing an all-stone silo with conical roof and openings for 

 feeding doors; the heavy black dots 1, 1, 1 show where iron rods may 

 be bedded in the wall to prevent cracking from the pressure of the 

 silage. Method of constructing silo door and door jamb for stone 

 silo. E shows cross section of silo door, F shows how the door 

 jamb is made to make it air tight, and how the door is held In place 

 with lag bolts against a gasket of ruberoid roofing. 



493. Protection Against Frost. It is not necessary to 

 build a silo so as to be entirely frost proof in cold climates, 

 but it will pay to build them reasonably warm where they 

 are to be fed from during cold weather. The fre-ezing of 

 silage does not injure it seriously but it is not well to feed 

 it when frozen. If a silo is not to be opened until warm 

 weather no special attention need be given to warmth. If 

 a silo is 10 to 13 feet in the ground and only 20 feet above 



