. Elements of farm practice. Agriculture. 262 ELEMENTS OF FARM PRACTICE bed is first given the slope desired, then covered with a layer of coarse, crushed rock, which is rolled with a heavy roller. Then another layer of finer crushed rock is placed on top, and rolled until it works in between the particles of the coarser material. More, but still finer, crushed rock or sand is added, sprinkled with water and rolled until a smooth, hard surface is formed. A stone road made as previously described, and from 6 inches to 12 inches thick, makes an excellent, hard, permanent road. Such roads cost so
. Elements of farm practice. Agriculture. 262 ELEMENTS OF FARM PRACTICE bed is first given the slope desired, then covered with a layer of coarse, crushed rock, which is rolled with a heavy roller. Then another layer of finer crushed rock is placed on top, and rolled until it works in between the particles of the coarser material. More, but still finer, crushed rock or sand is added, sprinkled with water and rolled until a smooth, hard surface is formed. A stone road made as previously described, and from 6 inches to 12 inches thick, makes an excellent, hard, permanent road. Such roads cost so much ($3,000 to $6,000 per mile) that they can be built only where the pop- ulation is dense" and where there is a great deal of travel over them. Earth Roads.—In most farming districts, for many years to come, material at hand; which Such roads, if proper-. Figure 118.—A split-log drag faced with steel. (See description and cost page 252). roads must be made of the means, in most cases, common earth. ly made and maintained, are very serviceable and may be much better than country roads generally are. Drainage.—Since the object in making roads is to keep them hard, it is plain that, to do this, water must be kept from standing at or near the surface. Drainage, then, is the first problem in building roads (except sandy roads) and it is safe to say that, if all roads were properly drained, the greatest problem in road building would be solved. The Turnpike.^—The most common form of road is a turnpike, made by taking earth from each side of the road and putting it in the middle. This makes a very good form of road, as the center of the road is high, so that the water runs off to the sides into the ditches constructed there. Often water remains in these ditches, because no outlet is provided by which it can escape into the natural waterways. Water standing beside a road, and within two to four feet of the surface, is very often detrimental to the. Please note that the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
