14 BULLETIX 801, U. S. DEPARTMENT OF AGRICULTURE. 
intervals of 50 feet forming compartments 100 feet by 50 feet in 
size. When the building is first planned the story height should be 
so fixed that compartments thus formed will have a volume not ex- 
ceeding the preferred limit of 72,000 cubic feet. Thus a building 
may be constructed which has a low first cost but which may be un- 
proved very economically later with an effective saving of fire hazard 
and insurance charges. Another desirable method of reducing: first 
cost and yet providing for future improvements is to use a story 
height of IT feet (at the eaves) and provide corbels or pockets in the 
walls to support a second floor to be built in later. In this way auto- 
matic sprinkler protection can be given to a large capacity and later 
the added floor and discontinuance of tiering will secure convenience 
and economy in handling and advantageous protection for the cot- 
ton. The sprinkler system would have to be extended so as to cover 
the lower floor. This should be anticipated in the beginning and 
supply pipes made large enough to care for the additional heads. 
The compress compartment demands, for practical use, a greater 
area than is recommended for the storage compartment. Here tier- 
ing of cotton is not to be countenanced from the standpoint either 
of practical cotton handling or fire hazard. However, requirements 
for good light and ventilation, as well as the convenient operation 
of some types of weighing apparatus in use, make a story height of 
approximately 15 feet desirable. For these reasons the capacity per- 
missible is better expressed in terms of square feet of floor area. This 
area usually should not exceed 22,500 square feet, this being equiva- 
lent to a floor 150 feet square. Where this space is not sufficient, a 
similar compartment may be provided adjacent to the compress com- 
partment and communicating with it through well protected fire 
doors in the dividing fire wall. 
Arrangements for the compress compartments are shown in figures 
5 and 6. Figure 5 shows how the compress may be divided into six 
compartments, all communicating directly with the compress com- 
partment, without openings in the fire walls except for those doors 
leading directly to the press room. These arrangements provide for 
a detached boiler room which is always to be desired, though a cor- 
ner of the press room may be cut off by fire walls for this use. The 
second plan (fig. 6) provides compartments on each side of the 
press compartment. Both of these plans may be adapted readily to 
either fire-resistive or slow-burning construction. If slow-burning 
construction is used, roof openings such as skylights should be of 
metal, and wooden monitors should be placed at least 50 feet from 
fire walls. 
The types of construction which are desirable for the warehouse 
building are fire-resistive, slow-burning, and a modification of this 
