26 



WISCONSIN BULLETIN 266 



The height of the gambrel roof should be equal to the 

 width of half the building. The first rafter should have a 



rise of one-third the width 

 of the building and a run 

 of one-sixth. The second 

 should have a run of one- 

 third the width of the 

 building and a rise of one- 

 sixth. Then in the case of a 

 36 foot barn the lower raf- 

 ter would have a rise of 12 

 feet and a run of 6 feet, 

 the second rafter a run of 

 12 feet and a rise of 6 feet. 



END BRACE ADDS STRENGTH 



FIG. 17. GAMBREL AND GABLE 

 ROOFS 



cambrel 

 height of 



increased in size in a 

 the roof at the plate or ridge. 



The end brace shown at 

 A in Figure 18 is designed 

 to prevent any end racking 



vent the end of the barn from springing. Many plank frame 

 barns constructed without this brace are likely to spring out 

 at the end, in some instances, as far as from two to six inches. 

 As there is no other truss work or ties bracing the end of the 

 barn, it is very desirable that the end brace be built in a barn 

 of the plank frame type of construction. 



USE CARE IN MAKING CONCRETE 



Concrete is the best home-made product that can be used 

 as barn building material. In many parts of the state sand 

 and gravel for concrete work can be found very near the 

 structure in which it is to be used. Concrete can be used to a 

 decided advantage for walls, mangers, floors, gutters. 



In selecting the material for such work the sand and gravel 

 should be clean and free from loam, the presence of which 

 prevents a good bond being secured between the sand and 

 cement and gravel and eventually causes the structure to 

 crumble. The best concrete results from properly graded 

 materials. As sand and gravel are ordinarily found in the 

 average gravel bank, there is an excess of sand. It should 



