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02-08-21-R
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02-08-21-R
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17 41 <br />MAXIMUM WATER VELOCITY: 5 FT./SEC. <br />INSTALLATION GUIDELINES <br />MINIMUM WATER DEPTH: 1 FT. <br />MAXIMUM WATER DEPTH: 3 FT. <br />2 <br />OF WATER <br />1/3 DEPTH <br />18 - 24 IN. <br />FOR SEDIMENT CONTROL <br />SILT FENCE TYPE TB <br />SILT CURTAIN OR <br />1 <br />2 <br />3 <br />4 <br />FOR ANCHOR SPACING AND WEIGHT REQUIREMENTS, SEE SPEC. 2573. <br />NOTES: <br />5 <br />SEE SPECS. 2573, 3886, 3887 & 3893. <br />PURPOSES. <br />ENDS AND SPECIAL AREAS FOR VISIBILITY. PLACE BUOYS AS REQUIRED FOR NAVIGATIONAL <br />ON U.S. COAST GUARD OR OTHER MOTORIZED WATERWAYS, BUOYS ARE REQUIRED TO MARK THE <br />6 <br />WINTER IF ICE UP OR ICE FLOW IS ANTICIPATED. <br />TEMPORARILY OR PERMANENTLY STABILIZED. SILT CURTAIN SHOULD ALSO BE REMOVED BEFORE <br />SILT CURTAIN SHOULD BE REMOVED WHEN THE AREA CONTRIBUTING DIRECT RUNOFF HAS BEEN <br />7 <br />8 <br />BUT IN NO CASE SHALL EMBEDMENT BE LESS THAN 2 FEET. <br />EMBED POST INTO BOTTOM A MINIMUM OF 40% OF THE WATER DEPTH (INCLUDING WAVE HEIGHT), <br />OF 100 LBS. CONNECTION METHOD MUST ALLOW FOR SLEEVE TO MOVE FREELY ON POST. <br />ANCHOR FLOAT MUST BE CONNECTED SECURELY TO SLEEVE WITH A MINIMUM TENSILE STRENGTH <br />CARRIER FLOAT <br />STEEL TENSION CABLE WATER SURFACE <br />CURTAIN DEPTHCURTAIN WEIGHT <br />7 <br />1 <br />ANCHOR CABLE <br />ANCHOR1 <br />4 <br />BOTTOM <br />VARIABLE LENGTH CURTAIN FABRIC <br />LAKE OR MARSH <br />1 <br />6 FT. MAX. <br />BUOY (TYP.)3 <br />TOE OF SLOPE <br />PLAN VIEW FOR LAKE OR MARSH 5 <br />PERIMETER CONTROL <br />PERIMETER CONTROL <br />WATER SURFACE <br />BOTTOM <br />EMBEDMENT2 FT. MIN. POSTWATER DEPTH2 FT. MAX.SURFACEABOVE WATER1 FT. MIN. EXTENDSANDBAGS <br />WITH <br />GEOTEXTILE <br />FLAP OF <br />1 FT. MIN. <br />ANCHOR <br />AT EACH FENCE POST <br />HOLD FLAP IN PLACE <br />ROCK, SUFFICIENT TO <br />WITH CLEAN SAND OR <br />SANDBAGS FILLED <br />PLACE ROCK LOGS OR <br />RIVER BANK <br />FLOW OF WATERWAY <br />WORK AREA <br />TEMPORARY FILL OR <br />CULVERT EXT., <br />BRIDGE ABUTMENT, <br />MEETS WATER SURFACE <br />POINT WHERE FILL <br />BANK <br />STREAM <br />WIDTH <br />THE STREAM/RIVER <br />LESS THAN 1/3 <br />1 <br />2 <br />ANCHOR TO LAND (TYP.) <br />STEEL FENCE POST <br />3BUOY (TYP.) <br />45° <br />45° <br />PLAN VIEW FOR STREAM <br />ROCK BERM <br />TEMPORARY <br />5 <br />6 <br />STEEL TENSION CABLE WATER SURFACE <br />CURTAIN DEPTHCURTAIN WEIGHT <br />4 <br />BOTTOM <br />CURTAIN FABRIC <br />VARIABLE LENGTH <br />8 <br />7 <br />ANCHOR TO LAND (TYP.) <br />STEEL FENCE POST <br />MAXIMUM WATER DEPTH: 10 FT. <br />MAXIMUM WATER VELOCITY: 2 FT./SEC. <br />MINIMUM WATER DEPTH: 3 FT. <br />MAXIMUM WAVE HEIGHT: 1 FT <br />TYPE: STILL WATER <br />FLOTATION SILT CURTAIN <br />INSTALLATION GUIDELINES 4 <br />AND CARRIER FLOAT <br />STEEL TENSION CABLE <br />CURTAIN DEPTHBUOY (TYP.)3 <br />2 FT. TO 10 FT.TEMPORARY ROCK BERM <br />MAXIMUM WATER DEPTH: 10 FT. <br />MAXIMUM WATER VELOCITY: 5 FT./SEC. <br />INSTALLATION GUIDELINES <br />MINIMUM WATER DEPTH: 3 FT. <br />TYPE: MOVING WATER <br />FLOTATION SILT CURTAIN <br />4 <br />FRONT VIEW FOR FLOTATION SILT CURTAIN 2 FT. TO 10 FT.3 FT. TO 10 FT.FLOTATION SILT CURTAIN <br />ALTERNATE FLOTATION SILT CURTAIN <br />INDICATED IN THE PLANS. THE TEMPORARY ROCK BERM IS INCIDENTAL. <br />WHEN THE WORK IS COMPLETE THE RIPRAP CAN THEN BE MOVED TO THE PERMANENT LOCATION <br />ROCK BERM CONSTRUCTED FROM THE RIPRAP CAN BE USED TO PROVIDE ADDITIONAL PROTECTION. <br />IN AREAS WHERE THE PLAN CALLS FOR RIPRAP AT A BRIDGE, CULVERT, OR SLOPE, A TEMPORARY <br />PROVIDE SUFFICIENT NUMBER OF POST ANCHORS TO MAINTAIN SILT CURTAIN POSITION. <br />SILT FENCE TYPE TB <br />OR SILT FENCE TYPE TP <br />FLOTATION SILT CURTAIN <br />SILT CURTAIN <br />FOR FLOTATION <br />ANCHORS IN WATER <br />SILT CURTAIN) <br />(TYP. OF FLOTATION <br />UNDERWATER ANCHOR <br />SILT FENCE TYPE TB <br />SILT FENCE TYPE TB. <br />OR SILT FENCE TYPE TB FOR DETERMINING APPLICABILITY OF FLOTATION SILT CURTAIN OR <br />MINIMUM WATER DEPTH APPLIES TO THE DEEPEST POINT ALONG THE FLOTATION SILT CURTAIN <br />CABLE <br />WIRE <br />T POST <br />TIE <br />WIREWIRE CABLE <br />AT 6 FT. MAX. SPACING <br />STEEL FENCE "T" POST <br />POST <br />"T" <br />TIES <br />PLASTIC <br />GEOMEMBRANE FABRIC, 72 IN. WIDE <br />MAXIMUM WAVE HEIGHT: 2 FT.8 IN.POCKET <br />HEM <br />FABRIC <br />FOLDED <br />FABRIC/CABLE/POST CONNECTION <br />CHIEF ENVIRONMENTAL OFFICER <br />REVISION: <br />APPROVED: 2-28-2017 <br />(EXTEND 18 IN. MIN. BELOW WATER SURFACE) <br />EQUIVALENT TO SLIDE FREELY OVER POST <br />2-1/2 IN. SCH 40 PVC SLEEVE OR <br />SLEEVE <br />CONNECTED TO <br />CARRIER FLOAT, <br />OR EQUIVALENT POST <br />1-1/2 INCH RIGID STEEL CONDUIT <br />SILT FENCE TYPE TB <br />FLOTATION SILT CURTAIN OR <br />LOCATED IN TOP 8 IN. <br />(50 LB. TENSILE) <br />PLASTIC ZIP TIES <br />TENSILE <br />50 LB. <br />TIE, <br />WIRE <br />CABLE <br />WIRE <br />STATE DESIGN ENGINEER <br />1 OF 8STANDARD PLAN 5-297.405 <br />TRANSPORTATION <br />OF <br />DEPARTMENT <br />TEMPORARY SEDIMENT CONTROL <br />SILT CURTAIN OR SILT FENCE TYPE TB <br />SHEET NO. OF SHEETSCITY PROJ. NO. PW-20-0103 <br />APPROVED: <br />REVISED: <br />2-28-2017 <br /> Model:405-1 Temporary Erosion Control1/15/2021Last Saved:\\hrgreen.com\HRG\Data\2018\181582\CAD\Road_Design\sheets\CD191801_spn01.dgnFile:PlotDrvr:pdf_bw_no_level_MnDOT.pltcfgPenTbl:hrg.tbl
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