FORMS FOR CONCRETE SILOS. 



89 



A Oute/de 

 form 



Fig. 31. Illustrates method of making form for constructing con- 

 crete walls. The forms are made of plank and are made in 

 sections 4 to 10 feet long, requiring 5 to 8 sections to complete 

 the circle. 



Courtesy Wisconsin Experiment Station. 



with other concrete work about the farm, he should not attempt 

 to build the silo himself but should turn the job over to a con- 

 crete contractor under a guarantee for only a first-class silo. 



The difficulty and expense connected with the preparation of 

 proper forms has led to the adoption of co-operative effort in 

 many sections. Some of the corn belt Agricultural Colleges make 

 a practice of loaning to farmers at a nominal cost a set of forms 

 together with the services of an expert. Manufacturers of mould 

 and mixing equipment are also attempting to supply farmers with 

 monolithic reinforced silos at minimum cost. One of these, 

 known as the MONSCO, has a standarized outfit, consisting of 

 scaffold-hoist with derrick, steel moulds for walls and chute, and 

 power mixer. The moulds are made in two circles each 3 feet in 

 height, divided into easily handled segments. Six feet of wall 

 per day is poured, reinforcement and ladder irons being installed 



