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1 <br /> I <br /> 1 <br /> ' MAYBELL SCHOOL SECTION CHANNELS <br /> RIPRAP FOR CHANNEL A <br /> USBR METHOD <br /> ENTER <br /> BOTTOM VELOCITY (fps) 9 <br /> SPECIFIC GRAVITY OF ROCK 2 . 6 <br /> ' OUTPUT <br /> MAX STONE SIZE (INCHES) 7.97 <br /> 1 <br /> t <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br />