. Bulletin of the Department of Agriculture. Agriculture; Agriculture. D=^ Cross-secfion is segment of a circle. Use cobblestone 4" to 6" Sand bedding about E" thick Fig. 4. it. If there is little probability that traffic will use a gutter, naturally such heavj' construction is not necessary. There are cases when ade- quate gutters may be built on a thin course of cinders with a sand bedding course. If the soil be not noticeably poor, 4 inches of cinders or gravel will be adequate. In sojne cases, on unusually favorable soils, such as sands or sandy loams, it may be possibl
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. D=^ Cross-secfion is segment of a circle. Use cobblestone 4" to 6" Sand bedding about E" thick Fig. 4. it. If there is little probability that traffic will use a gutter, naturally such heavj' construction is not necessary. There are cases when ade- quate gutters may be built on a thin course of cinders with a sand bedding course. If the soil be not noticeably poor, 4 inches of cinders or gravel will be adequate. In sojne cases, on unusually favorable soils, such as sands or sandy loams, it may be possible to build im- mediately on the soil in place or with nothing more than the sand bedding course added. CONCRETE GUTTER. ROADWAY D=g Cross-section is segment of a circle. ]-ZA concrete about 6" thick Foundation of gravel, broken good quality earth. Fig. 5. Figure 4 shows a typical cross section for a cobble gutter, and Plate I is a photograph showing a completed gutter which was con- structed in accordance with the foregoing directions and which is now giving satisfactory service. Sand was used for filling the joints in this gutter. CONCRETE GUTTERS. There are two types of concrete gutters in general use. One has a curved cross section, as shown in figure 5, and the other is essen-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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