BULLETIN No. 143 



[February, 



on wood construction thruout, are 

 made, in which round barns 60 

 feet and 90 feet in diameter are 

 compared with both plank and 

 mortise frame rectangular barns 

 containing the same number of 

 square feet of floor space, re- 

 spectively. Since the most prac- 

 tical width of a rectangular dairy 

 barn is 36 feet, its length will de- 

 pend upon the number of square 

 feet required in the barn. 



Figures 6 to 9 are side and 

 end view r s, showing the detail 

 construction and size of the tim- 

 bers of the plank frame and mor- 



SHOWING CONSTRUCTION OF tise frame barns here figured. 

 MORTISE; FRAME; BARN, END VIEW. The detailed figures of the lum- 

 ber bills for each of these barns 

 were carefully worked out, but 



are too voluminous for publication here. The total number of feet 

 of each kind of lumber required is given in Tables lA and iB. 

 Since the proportion of the different kinds of lumber and shingles 

 varied for the different barns, to draw an exact comparison it was 



P,^r 



-Intern 



FIG. 7. SHOWING CONSTRUCTION OF PL.ANK FRAME BARN, SIDE VIEW. 



