. Cyclopedia of farm animals. Domestic animals; Animal products. Fig. 252. To show differences in surface areas for same volume in different forms. cube. The following illustration demonstrates the economy of building an ice-house of the greatest capacity needed for a particular place: An ice-house 10 feet long, 10 feet wide, and 10 feet high contains 1,000 cubic feet. A cubic foot of ice weighs 57 pounds; if well piled in an ice- house, it is estimated that it will weigh on an average of 40 pounds per cubic foot; hence, in an ice-house 10x10x10, containing 1,000 cubic feet, there would be 40,
. Cyclopedia of farm animals. Domestic animals; Animal products. Fig. 252. To show differences in surface areas for same volume in different forms. cube. The following illustration demonstrates the economy of building an ice-house of the greatest capacity needed for a particular place: An ice-house 10 feet long, 10 feet wide, and 10 feet high contains 1,000 cubic feet. A cubic foot of ice weighs 57 pounds; if well piled in an ice- house, it is estimated that it will weigh on an average of 40 pounds per cubic foot; hence, in an ice-house 10x10x10, containing 1,000 cubic feet, there would be 40,000 pounds of ice, or 20 tons. There being six sides to a cube, there is required 600 square feet of insulation, which, at 10 cents per square foot, would cost $60. Assuming that the ice-house is increased in size to 12x12x12, containing 1,728 cubic feet, it would contain 69,- 120 pounds of ice, or approximately 34J tons. This ice-house has 864 square feet of insulating surface, which, at 10 cents per square foot, would cost $ If the ice-house be increased to 15 x 15 x 15, it would hold 135,000 pounds of ice, or approxi- mately 67J tons. Such a structure would have 1,350 square feet of insulating surface, which, at 10 cents per square foot, would cost $135. The ratio of the volume to the cost of construction would be as follows : For the ice-house 10 x 10 x 10 the construction costs $3 per ton ; for the ice-house 12 x 12 x 12 the construction costs $ ; for the ice-house 15 x 15 x 15 the cost per ton would be $2. The ratio decreases proportionately as the size increases. Relation of cost to volume in different forms.— (Fig. 252.) Assuming that an ice-house, instead of being built in the form of a cube, is constructed 14 x 14 x 8 feet 10 inches, this having approxi- mately the same volume as the one 12 x 12 x 12, the number of square feet of surface on this form would be 886, while the number of square feet of surface on the one built in the form of a cube is 864. The
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Keywords: ., bookauthorbaileylh, bookcentury1900, bookdecade1920, bookyear1922
