What number of people should be allowed to sleep in a dormitory 40 feet long, of which the accompanying sketch is a section?
The cubic capacity of the quadrilateral space below the roof = 16 x 9 x 40 = 5,760 cubic feet.
Area of floor = area of base of roof = 40 x 10 = 640 square feet.
- Cubic capacity of roof = 640 x ⅓(13 - 9).
- = 853·3 cubic feet.
- Total cubic capacity of dormitory = 6613·3 cubic feet.
If we take the low standard of common lodging houses and allow 350 cubic feet of space for each inmate, then 18 persons may be allowed to sleep in the dormitory.
How much space would a man occupy supposing him to weigh 175 lbs.? How much is usually allowed for a man with his clothes, bed and bedding?
The space occupied by a man is stated by Parkes to be from 2½ to 4 cubic feet (say 3 for the average). He gives the following rule: The weight of a man in stones divided by 4 gives the cubic feet he occupies. Thus, a man weighing 175 lbs. would occupy 3⅛ cubic feet of space.
About 10 additional cubic feet must be allowed for clothing, bedding, and bed for each person.
What size of inlet and outlet aperture should be allowed per head? How large should each individual inlet be made? If an inlet aperture 100 square inches in area is divided into four, with apertures of 25 square inches each, what is the loss by friction?