THE OCTAGONAL BARN. 



91 



If we compare it with an oblong barn 50 x 108 feet, the 

 latter will inclose the same number of square feet, and 

 have the same capacity at the same height, but requires 51 

 feet more outside wall. 



It is easy to make the roof of the octagon self-support- 

 ing, as it is in the form of a truss. The plates perform the 

 office of the bottom chord, and the hip rafters of the top 

 chord, in a truss. The strain on the plates is an endwise 



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Fig. 8. OCTAGON BASEMENT (NORTH SIDE). 



EXPLANATION. a b c rf, doors of basement ; , drive-way through the center ; n c, 

 south drive-way for cart to carry out manure ; o d, north drive-way ; TO, spare room 

 .for root cellar or any other purpose ; II, lying-in stall for cows : kkkk kk, horse 

 mangers ; jjjjjj, horse stalls ; ff, forty cow stalls or stanchions there should be 

 no separation between these spaces and h; g g, cow mangers ; A A, an open grated 

 platform for cows to stand on , the manure falling through upon a concrete floor 

 below. 



