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Florida Erosion and Sediment Control Inspector's Manual <br /> r <br /> � A I - <br /> A <br /> VIEW LOOKING UPSTREAM <br /> NOTE: <br /> KEY STONE INTO THE DITCH BANKS <br /> AND EXTEND IT BEYOND THE ABUTMENTS <br /> A MINIMUM OF IB' TO PREVENT OVER <br /> FLOW AROUND DAM. <br /> i <br /> FLOW <br /> 8 ft. <br /> SECTION A - A <br /> w <br /> Z' THE DISTANCE SUCH THAT POINTS 'A' AND <br /> 'B' AR: OF EQUAL ELEVATION. <br /> 1' <br /> w <br /> — — — e <br /> POINT 'A' POINT 'B' <br /> SPACING BETWEEN CHECK DAMS <br /> Plate 4.38b Rock Check Dam <br /> Source: Erosion Draw <br /> w <br /> 4-108 <br /> w <br />