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<br />ROCK-FILLED WIRE BASKETS <br /> <br /> <br />~ <br /> <br />('\,~ <br />~~~,."'"""'" <br />Iii _::'J~''''''' ,I' I" ...,111/1" ,..""'" ."'....,111"""..'""'... .."!f'".,.." <br />_",I/III""" "1111"....,,.,11"'" <br />."",mllll,." "'11"'''''' <br /> <br /><~r <br />~,:," <br />."'IU""'!I'{ljlii~ <br /> <br />_,,,,".~...,,, <br /> <br />..,111"....",'''....-- <br /> <br />"rll~r'" <br />."IIIP"" <br /> <br />'\ \ <br />'I' <br />,,- <br />, <br /> <br />--~- <br /> <br />~ <br /> <br />---~ <br />~ <br /> <br /> <br />tRock-Filled Wire BaskeTS <br /> <br />Normal <br />Water Surmce <br /> <br />ITPICAL 5ECT/ON <br /> <br />Variable sized wire cages fll led with low grade stone can be used for stream bank erosion <br />protection. These filled baskets are used as building blocks to form the protective <br />structure along the streambank. Prior to the placement of the cages, a support apron <br />should be laid on the bank extending at least 6 feet past the toe of The basket works. <br />The apron, constructed of baskets, should have a minimum height of 1.5 to 2 times the <br />depth of the scour predicted at the toe of the bank. Following this procedure layers of <br />baskets are placed on top of this apron and al I are wired together. <br /> <br />ADVANTAGES: <br /> <br />1) <br /> <br />Cages are somewhat flexible and are~ therefore~ able to accommodate <br />minor changes In bank geometry and ease of repair. <br /> <br />2) The voids between stones allow bank drainage, wh leh aids In the <br />elimination of failures due to excessive hydrostatic pressure. <br /> <br />3) Reduced first cost If you fabricate baskets yourself. <br /> <br />4) Inexpensive ungraded rock can be used. <br /> <br />5) Moderate to low maintenance costs. <br /> <br />21 <br />