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<br />ROCK-FIL.LED WIRE BASKETS <br /> <br /> <br />~ <br /> <br />"0I'11111111111I11~11.. <br />",'1111'""1111""'::;'11,,,,,,,.'"1111111''''' <br />",,'IIIl"'" <br /> <br />("''"<,'). <br /> <br />lt0 <br />""""," ..."~' ". II':"" ~': ;;: r. ,.:'.'.:,:',',.,.,.,' :'.~.~.!.'.':':~ ';1: :::~;; ';; ';,: '::: "~,, ""..., 'r ~~: ',:,"1'" r <br />" . ",IIPii."'" <br />..,..nllll~." "111" '" <br /> <br /><~y <br />~,:"., <br />."llhl"'llIIlllb~ <br /> <br />".I/l/,....,...""",..",. <br /> <br />"1111""."""",._ <br /> <br />\ <br />," <br />\ <br /> <br /> <br />~ <br /> <br />---~ <br />~ <br /> <br /> <br />IRocl~-Filled Wire Baskets <br /> <br />Normal <br />Water Surma <br /> <br />TYPICAL 5ECT/ON <br /> <br />Variable sized wire cages fl lied wIth low grade stone can be used for streambank erosion <br />protection. These fi lied 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, shou I d have a ml n lmum height of 1.5 to 2 t fmes 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, which aids In the <br />elimination of fai lures due to excessive hydrostatic pressure. <br /> <br />3) Reduced first cost If you fabricate baskets yourself. <br /> <br />4) 1 nexpens I ve ungraded rock can be used. <br /> <br />5) Moderate to low maintenance costs. <br /> <br />21 <br />