Concrete Silos 



159 



center line of each plank to accommodate the bolt and 

 hook by which the door is held to the horizontal rein- 

 forcing across the door opening. The bolts used have a 

 screw eye on the outer side to which hangs a hook made 

 of heavy steel wire. 



Non-continuous doors are perhaps easier to build 

 than continuous doorways, and if the owners are satis- 

 fied that they provide sufficient room for getting the 



Method of Fastening Reinforcing When Silo Is Built With 

 Continuous Door Opening. 



silage out conveniently, there is no objection to their 

 use, although on the other hand, they possess no great 

 advantage over doors of the continuous type. The 

 arguments often heard that the non-continuous door 

 silo is a stronger type than the other, and vice versa, 



