66 



SILOS: CONSTRUCTION AND SERVICE 



while still green, wash with a cement wash before the scaffold 

 is raised or the work left for the night. This wash naturally 

 brings to view any crevices which may exist. These may be 

 then filled with mortar and thoroughly sealed on the inside 

 of the wall. This wash is composed of cement and water 





Fig. 17. The clay block silo. 



