PURPOSE BARNS 



Total cross-sectional 

 areas of inlets 



No. of inlets 



Cross-sectional area of each inlet. 



Fig. 6. Much Depends on Outlet Flue. 



The success of a ventilating system depends to a considerable extent upon 

 the outlet flue. The opening of the foul air flue is placed one and one-half 

 feet above the floor. In this construction water-proof building paper is 

 placed between the two layers of flooring. 



Thirteen 



