. Cyclopedia of farm animals. Domestic animals; Animal products. uously around all corners. Care should be taken that no breaks occur in the paper, and if a break is made it should be covered with another sheet. Dead-air spaces may be made for insulating pur- poses, but, owing to the expensiveness of construct- ing an air space, it is advisable to use some insulating material such as rock cotton, asbestos, mineral wool, liner felt, cork, charcoal, or planer-shavings. The shavings must be from some odorless wood, such as spruce or hem- lock. The thickness of insulation de- pends on the ma- teri
. Cyclopedia of farm animals. Domestic animals; Animal products. uously around all corners. Care should be taken that no breaks occur in the paper, and if a break is made it should be covered with another sheet. Dead-air spaces may be made for insulating pur- poses, but, owing to the expensiveness of construct- ing an air space, it is advisable to use some insulating material such as rock cotton, asbestos, mineral wool, liner felt, cork, charcoal, or planer-shavings. The shavings must be from some odorless wood, such as spruce or hem- lock. The thickness of insulation de- pends on the ma- terial used and the construction of the walls. In using rock cot- ton, at least four inches should be placed in the wall, including three air spaces that would range as fol- lows: One-inch air space, two inches of rock cotton, two-inch air space, two inches of rock cotton, and one-inch air space. When asbestos is used, at least six inches should be put in the wall, with an air space of one inch on each side. When planer-shavings are used, an eight-inch air space should be filled, with no dead-air spaces. For chaff or cut rye-straw, ten inches should be used. Construction.—The foundations should be made of stone, brick or concrete, and built high enough to allow good drainage to the lower insulation. The floor of the refrigerator should be well drained and then covered with at least eighteen inches of coal cinders. If cinders are not available, coarse sand may be used, or crushed limestone. Place on this a very light, thin coat of cement. On this place joists, which are supported at the ends and are of such size as is necessary to carry the weight of ice and the products stored. Between the joists fill the space with insulating material. On the joists place an inch thickness of lumber, then some insulating material and lastly flooring. (Fig. 263.) Or, place two thicknesses of paper on insulating material, with a layer of fine sand, on which place two inches of cement. The cement s
Size: 1172px × 2131px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbaileylh, bookcentury1900, bookdecade1920, bookyear1922
