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SILT FENCE SPACING <br />SLOPE <br />STEEPNESS <br />MAXIMUM SLOPE <br />SPACING (FT.) <br />2:1 <br />SPACING (FT) <br />50 <br />3 1 <br />3 1 <br />75 <br />4 :1 <br />175 <br />125 <br />5 :1 <br />FLATTFR THEN 51 <br />175 <br />FLATTER <br />THEN 5 :1 <br />200 <br />WATTLE SPACING <br />SLOPE <br />MAXIMUM SLOPE <br />STEEPNESS <br />SPACING (FT) <br />2 1 <br />50 <br />3 1 <br />75 <br />4 1 <br />175 <br />5 1 <br />175 <br />FLATTFR THEN 51 <br />700 <br />Install "J- oo -. -n. of an <br />individual section of silt fence <br />9,G — —_ -- - <br />Install parallel to <br />ground contour <br />// _ <br />// - // <br />/� <br />i 18" MINIMUM <br />-, <br />, <br />NOTE <br />200' max length per section <br />(600' if slope is flatter than 5 /.) <br />TYPICAL SILT FENCE INSTALLATION ON LONGITUDINAL SLOPES <br />(Plan View) <br />'8'0" spacing <br />Ground ling <br />III <br />III <br />W <br />DETAILS OF SILT FENCE ON LONGITUDINAL SLOPES <br />'Reduce post spacing to 5'0" at water concentration areas, <br />or as required to adequotely support fence <br />18" MINIMUM <br />vanes <br />TYPE 2 <br />'V' DITCH DIVERSION <br />18" MINIMUM <br />/////- / <br />///-7/1/ // <br />TYPE 3 <br />DITCH /BERM DIVERSION <br />01 <br />II <br />II <br />W <br />SILT FENCE TO BE PLACED ON THE CONTOUR <br />BERM SLOPE <br />2 1 (nomino0 <br />Fabric <br />/ /////,/— / // //j,/ / /- / %' <br />// /// //' <br />TYPE 1 <br />BERM DIVERSION / //j /% <br />//- <br />24" <br />BERM SLOPE <br />2 1 (nomino0 <br />/// <br />//4////- / <br />A - //7=//4- / / / - /// /// y / <br />/ / / --//' / / / /// <br />-41-411■1 TEMPORARY DIVERSION DETAIL <br />NOT TO SCALE <br />0 <br />1 DIVERSION TYPES 1,2, AND 3 MAY BE USED INTERCHANGEABLY UNLESS OTHERWISE SPECIFIED <br />Post spacing <br />(5'-0" max.) <br />Post spacing <br />(5' -0" max.) <br />F Or <br />SILT FENCE DETAIL <br />NOT TO SCALE <br />DRIVE STAKES FLUSH WITH <br />TOP OF WATTLE <br />@ 441404" <br />Arm <br />11-.0.10A-4,-00.-‘0 . 1,- 0 d <br />iii RR � • , I . �I �T�,��, ! fi,v o it ;f g f <br />in � II,1L A �.1�`.VJ� A <br />III <br />III 1 (11 <br />1) W W <br />ATTACHMENT TO POST <br />NATTIE TO BE PLACED ON DE CONTOUR <br />Variable (20' for a normal 10' wide ditch ) <br />TYPICAL SILT FENCE DITCH CHECK <br />Wire or 5 <br />cable ties <br />GENERAL NOTES <br />NOTES <br />1 WATTLE SHALL BE PLACED AT THE TOE OF THE SLOPE OR ON THE CONTOUR <br />2 WATTLE SHALL BE SECURELY ANCHORED IN PLACE BY STAKES DRIVEN THROUGH <br />THE WATTLE SPACE STAKES AT 4 FOOT MAXIMUM. STAKES SHALL BE DRIVEN FLUSH <br />WITH WATTLE <br />3 TURN ENDS OF WATTLE UPHILL TO PREVENT WATER FROM FLOWING AROUND ENDS <br />4 ABUT ENDS OF ADJACENT WATTLES TIGHTLY WRAP JOINT WITH 36 INCH WIDE SECTION <br />OF SILT FENCE AND SECURE WITH STAKES. <br />WATTLE DETAIL <br />NOT TO SCALE <br />Install silt fence according to the requirements and at <br />locations shown in the contract documents or os directed <br />0 Insert 12 in of fobric a minimum of 6 in. deep <br />(fabric may be folded below the ground line) <br />20 Compact ground by driving along each side of <br />the silt fence os required to sufficiently <br />secure the fabric in the trench to prevent <br />pullout and Flow under the fence. <br />03 In ditches, extend silt fence up side slope so <br />the bottom elevation at the end of the fence is <br />a minimum of 2 in higher than the top of the <br />fence in the low point of the ditch. <br />® Steel posts to be embedded 20 in. <br />OS Secure top of engineering fabric to steel posts <br />using wire or plastic ties (50 Ib. min.). See <br />details of "Attachment to Posts." <br />Compact trench spoil <br />against uphill side of wattle <br />9" (nominal) dia. <br />or as specified <br />2 -4" Trench <br />( <br />II <br />III <br />W <br />NOTE' <br />2 STAKES PLACED <br />1 1/2' TO 2' IN GROUND <br />DRIVE STAKES FLUSH WITH <br />TOP OF BALE <br />POROUS EROSION STONE <br />WITH FEW FINES <br />'WET" STORAGE DEPTH 3 FEET MINIMUM <br />EXPAND VOLUME OF TRAP AS SITE <br />CONDITIONS DICTATE <br />1 REMOVE ACCUMULATED SEDIMENT WHEN LEVEL REACHES ONE-HALF THE HEIGHT OF THE WET STORAGE <br />SEDIMENT TRAP DETAIL CROSS SECTION <br />NOT TO SCALE <br />FLOW <br />BOUND BALES PLACED <br />ON CONTOUR <br />ANGLE FIRST STAKE TOWARDS <br />PREVIOUSLY LAID BALE <br />ANCHORING DETAIL <br />NOT TO SCALE <br />NOTES. <br />1 BALES SHALL BE PLACED AT THE TOE OF SLOPE OR ON <br />THE CONTOUR AND IN A ROW WITH ENDS TIGHTLY ABUTTING THE ADJACENT BALES. <br />2 EACH BALE SHALL BE EMBEDDED IN THE SOIL A MIMUM OF (4) INCHES, AND PLACED <br />SO THE BINDINGS ARE HORIZONTAL <br />STRAW BALE DETAIL <br />NOT TO SCALE <br />BEDDING DETAIL <br />NOT TO SCALE <br />3 BALES SHALL BE SECURELY ANCHORED IN PLACE BY TWO STAKES DRIVEN THROUGH THE BALE <br />THE FIRST STAKE IN EACH BALE SHALL BE DRIVEN TOWARD THE PREVIOUSLY LAID BALE AT AN ANGLE TO FORCE <br />THE BALES TOGETHER STAKES SHALL BE DRIVEN FLUSH WITH BALE <br />4" VERTICAL TRENCH <br />ISSUE DATE. 05 - 14 - 2012 <br />VJ <br />Z <br />0 <br />1 <br />C0 / <br />—J <br />LL <br />Z <br />w <br />w <br />1- <br />/ Q <br />W <br />01 <br />z . <br />N LL <br />U <br />8 <br />O <br />O <br />CC <br />0 <br />O <br />0 <br />1- <br />O <br />U <br />z <br />J <br />O <br />U <br />z <br />J <br />us <br />1080169 <br />0 <br />M <br />a1 <br />C#)) <br />C/3 <br />w <br />U <br />/ 3 <br />�C / <br />V J <br />w <br />/ Z <br />V J <br />Sheet 3 of 4 <br />