THIRTY-FIFTH ANNUAL CONVENTION. 291 



Continuous Door. 



The advantage of a continuous door making it possible to 

 climb a ladder on the inside of the chute and step directly on to 

 the silage without even stooping would be appreciated by all 

 and especially by the man past middle age. The doors could be 

 of any height, perhaps simply tongued and grooved plank 

 sawed as long as width of door. The chute is built with the 

 rest of the silo, of the same masonry construction, and the rein- 

 forcing steel passes around the chute. However, for 

 concrete brick or tile, a light steel rod may be laid in the wall 

 which makes a reinforced beam of that portion of the wall that 

 if properly built will withstand the silage pressure. 



If this chute were roofed over, the doors could all be left 

 out and no warm air escape. Windows should be provided at 

 frequent heights along the chute thus providing plenty of light 

 within the silo. The silage chute is quite essential and should 

 be as permanent as the rest of the silo. This being the case the 

 extra expense of a door of this type is entirely justified. 



Estimated Cost of Iowa Silo. 



Size 16 feet in diameter by 35 feet high. 



Excavation — sy 2 feet deep $ 6.00 



Amount of concrete required — 



Foundation 5 Yds. 



Floor 3 Yds. 



Door Frames 1 Yd. 



Total ...,y 2 * 9 Yds. 



Labor at $1.75 per yd $15.75 



Gravel at $1.25 per yd 11.25 



Cement— 7 bbls. at $1.50 10.50 



Total cost of concrete 37.50 



