24 BULLETIN 849, U. S. DEPARTMENT OF AGRICULTURE. 
is no clean-bottle storage room, however, the bottle-filling room will 
have to be big enough to store the clean bottles. It should also be 
large enough to allow plenty of room for the men to get around the 
filling machines for operating and cleaning. 
The milk-storage room must be of sufficient size to hold all the milk 
that is to be handled, with space to spare for an emergency. Space 
should be allowed for a passageway between the tiers of various 
kinds of goods, such as pints and quarts of milk and jars of cream. 
Too large a room, however, is wasteful and requires additional 
refrigeration. The ceiling need not be more than 8 or 10 feet high 
after allowing for brine tank or pipes. A room 15 by 16 feet pro- 
vides a space of 240 square feet. If cases of quarts are piled 6 high 
and pints 7 high, the space would provide for about 2,000 gallons 
- of bottled milk in cases. Allowing space for the men to work and | 
for emergencies, a room about 18 by 20 feet should be provided for 
2,000 gallons of milk in bottles. A room 12 by 15 feet would pro- 
vide space for about 1,000 gallons of bottled milk. In order to 
economize on refrigeration and insulating material the room should | 
be as nearly square as possible. The proportion of milk that has to 
be held over in storage is one of the causes of the variation in size 
of storage rooms, as some plants send milk out on delivery wagons 
immediately after bottling without going to the storage room. When. 
large quantities of milk are stored in cans more space is required, as 
cans of milk can not be packed so closely or so high as milk in cases 
of bottles. | 
The size of the by-products room depends upon the type of busi- 
ness conducted, but ample space must be provided for the churn, 
cheese vats,and similar equipment, with plenty of room for the men 
to work. 
ARRANGEMENT OF ROOMS. 
The rooms in the plant should be arranged so as to necessitate a 
minimum expenditure for machinery and labor; they should be so 
laid out that the work can be carried on with the fewest possible 
steps. It is desirable that the bottle-washing room, for example, be 
handy to both the boiler room and bottle-filling room. In this way 
little steam is lost in transferring it from the boiler to the washing 
room and the washed bottles are readily transferred to the filling 
room. | 
The bottle-washing room should also be so situated that the re- 
turned bottles may pass directly from the receiving platform to the 
washing machines. In some plants the bottle-washing room is di- 
rectly under or over the filling room, which may be convenient where 
there are facilities for elevating or lowering the bottles. If there is 
space enough, however, it is generally more convenient to have the 
washroom and the bottle-filling room on the first floor. 
