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C a <br /> A Figure 14.—Construction plans <br /> i for a single-fence rock <br /> g check dam. <br /> e h A, Section of the dam <br /> f h parallel to the center- <br /> line of the gully. <br /> B, Section of the dam at <br /> the cross section of the <br /> gully. a = original gully <br /> B bottom; b = original <br /> gully cross section; c <br /> = spillway; d = crest <br /> of freeboard; e = exca- <br /> vation for key; f = ex- <br /> 0 b cavation for apron; g = <br /> .� end sill; h = steel _ <br /> d d fencepost; k = guys; <br /> C j = rebar, 13 mm in <br /> diameter. <br /> e <br /> '� h <br />