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<br />STONE WEIGHT, IN POUNDS <br />20 60 600 1000 1500 3000 5000 <br />i <br />i <br /> <br />O <br />2 <br />O <br />U <br />W <br />N <br />w <br />a <br />H <br />W <br />W <br />W <br />2 <br />>~ <br />U <br />0 <br />J <br />W <br />,6 i s ro l ao I t o zoo 4oD I I 12000 1 ao0o I <br />4 <br />! <br />'2 <br /> <br />!0 <br /> <br />18 <br /> <br /> <br />16 <br />14 <br /> <br />12 <br />10 <br /> <br /> FOR STONE WEIGHING <br /> 165 LBS. PER CU. FT. <br />B <br /> <br /> <br />6 <br /> ADAPTED FROM REPORT OF <br /> SUBCOMMITTE ON SLOPE <br /> PROTECTION, 4M. SOC. CIVIL <br />4 ENGINEERS PROC. JUNE 1948 <br /> <br />2 <br />O <br />12:1 « <br />bottom <br />4: I <br />3:1 <br />2:1 <br />I%2:1 <br />0 I 2 3 4 <br />EQUIVALENT SPHERICAL DIAMETER OF STONE, IN FEET <br />~• 2-SIZE OF STONE THAT WILL RESIST DISPLACEMENT <br />FOR VARIOUS VELOCITIES AND SIDE SLOPES <br />