232 ILLINOIS STATE DAIRYMEN'S ASSOCIATION. 



These are nailed on top of the sheeting, so as to break joints, 

 covering cracks whenever possible, and leaving a suitable space 

 for clinching the mortar. 



The Upper Half. 



When the sheeting and lath have been put on to within 

 about a yard of the top of the first length of studding, a tem- 

 porary platform or trestle may be laid to enable the workmen 

 to erect the second half in the same manner as the first was 

 put up. It is well to leave the center pole resting on the con- 

 crete floor and extend it by adding another piece. 



The second half of the studding should be spiked to the 

 first with a lap of about two feet. After blumbing and tying 

 in place, the sheeting and lath are put on, and finally after re- 

 moving the temporary platform, the middle is completed by 

 putting on the sheeting and lath. Care must be taken that no 

 wide cracks are left. 



Plastering. 



The wall of the silo is plastered to a depth of about one 

 inch, i. e., about one-half inch over the lath, with a rich, well- 

 mixed mortar or concrete, made from three parts of sharp, 

 clean, coarse sand, or finely crushed stone, and one part of good 

 Portland cement. This mortar should be about as thick as that 

 ordinarly used in plastering a house. 



The Doors. 



Four doors are sufficient for a thirty- foot silo, and five are 

 enough for a thirty-six foot silo. Ordinarily the bottom of the 

 first door will come about two and a half feet above the sill. 

 The doors are two and one-half feet high and four feet are 

 allowed between doors. 



When the studding is being spliced for the erection of 

 the upper half of the silo, care must be taken that the studding 

 between which the doors are to come are not lapped but are put 

 end to end and tied together with a six-foot piece of two-by-four 

 spiked to each at the junction. This allows a door jamb which 



