32 BULLETIN 277, U. S. DEPARTMENT OF AGRICULTURE. 
so that the cotton may be removed rapidly during the fire. For the 
same reason a risk takes a much higher rate when the warehouse is 
surrounded by a barbed-wire fence or when there are any other 
obstructions that might hinder the prompt removal of the cotton. 
HEIGHT OF WALLS. 
In all of the foregoing types the thickness of wall mentioned has 
been for buildings one story high. ‘The standards for fire walls for 
Fig. 12.—Standard cotton warehouse fully protected, showing the proper method of storing. 
buildings of different heights are given below. In the table the 
thickness refers to the outside walls. In all cases the division walls 
between the storage compartments should be 4 inches thicker than 
outside walls. 
Standard fire walls. 
Thickness of outside walls, in inches. 
Height of building. | 
eekinst Seeond Third Fourth Fifth Sixth 
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FLOORS. 
All of the standards recommended by the insurance companies 
require that floors be of concrete, dirt, shell, or other incombustible 
material. Many warehousemen object to any of these floors for 
the reason that when cotton is stored on such floors for any length of 
time ‘country damage” usually occurs. This is undoubtedly true 
