Bui. 801, U. S. Dept. of Agriculture. 



Plate XXIII. 



Fig. I. — A Division Fire Wall which Checked the Spread of a Fire that 

 Consumed a Compartment Filled with Cotton. 



Note that the timbers supported by the corbel fell without damage to the wall and that the buttresses 

 prevented buckling of the wall from heat. 



"SSS** 



Fig. 2. — A Long Wall Braced by Buttresses Against Buckling From 



Fire. 



other notable features are the conductor head with scupper above, the lower end of the metal con- 

 ductor discharging into cast-iron pipe, and the cast-iron door guards. 



