THE IOWA SILO 



67 



mixed to about the consistency of good paint, and can be 

 applied with a broom. The wash should be applied vigor- 

 ously, in order to smooth 

 down and fill the irregu- 

 larities. 



Scaffolding. It is 

 difficult to overestimate 

 the advantage of con- 

 venient, safe, and simple 

 scaffold for any masonry 

 construction. Three dis- 

 tinct types have been 

 tried by the author, and 

 the one which is shown 

 here was found to be 

 superior to any other 

 type tried. This and 

 various modifications of 

 it are in common use. 

 This scaffold is shown in 

 the drawing; all parts 

 are lettered for^the sake 

 of a clear description. 

 The top side of the scaf- 

 fold is shown in Fig. 20. 



This scaffold differs 

 from most building scaf- 

 folds in that the platform 

 is movable. The plat- 

 form itself consists essen- 

 tially of a square frame- 

 work of 2x8's or 2x6's 

 for a small silo, of a rea- Fig. is. The clay block 



