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Home My WebLink AboutSW1221002_Plansheet CL904.P2 - Misc. Detail_20230223 SANDBAG EARTHEN STAPLES BERM PERMEABLE + - PERMEABLE GEOTEXTILE T � LU GEOTEXTILE FABRIC D- z QY Q FABRIC ' PLYWOOD LU LL m PAINTED Gresham Smith WHITE GS-NC P.C. NOTES /�\\/� SECTION B-B An Affiliate of Gresham Smith 01 EARTHEN 1. INLET MAINTENANCE SHALL BE DOCUMENTED IN PROJECT LOG BOOK. SECTION A-A LAG SCREWS !CONCRETE:: BERM 2- FILTER TYPES SHALL BE APPROVED BY THE INSPECTOR PRIOR WASHOU ; BLACK TO INSTALLATION. I i bl LETTERS 3. FILTER BAGS MAY BE REMOVED WHEN SITE IS STABILIZED AT O O O O 0 WOOD POST THE DIRECTION OF THE ENGINEER. BERM 201 South College St. 4. FILTER BAGS SHALL BE REMOVED PRIOR TO STREET ACCEPTANCE. g 5. FILTER BAGS SHALL BE CLEANED OR REPLACED ON A REGULAR // // // // // // / // //./ Suite 1950 HOOD BASIS NOT BE MORE THAN HALF FULL AT ANY TIME . \';\%\\ \%�\\�\\�i�%j�% /i\\� � ) �\/\\ Charlotte, NC 28244 6. FILTER BAGS SHALL NOT BE ALLOWED IN EXISTING TOWN OR NCDOT F. O 0 B B 704.944.7970 c -rE ROADS. A PERMEABLE PERMEABLE A CONCRETE WASHOUT GEOTEXTILE � -- _ GEOTEXTILE Lu Q GRATE FABRIC m SIGN (OR EQUIVALENT) Q EXPANSION 1 REBAR FOR - - O Q 0 VARIABLE > RESTRAINT REMOVAL FROM INLET VARIABLE > NOTES: '1EFLECTort FILTER t3AG 1. ACTUAL LAYOUT DETERMINED IN THE , DUMP LOOPS- �' - 0 FIELD. 2. SIGNAGE IDENTIFYING THE SANDBAG CONCRETE INSTALLED WITHIN O5FT OF THEUT AREA Gresham BE ` Gresham WASHOUT FACILITY. PLAN VIEW CATCH aril"- 03 O O O O O TYPE "ABOVE GRADE" WITH D p I � C L904.P2 Smith �Q ouTLFr PLAN VIEW CONCRETE WASHOUT EARTHEN BERMS TYPE "BELOW GRADE" NOT TO SCALE SECTION INSTALLATION NOT TO SCALE Hl BUNCOMBE COUNTY SOIL sheve EROSION & SEDIMENTATION CATCH BASIN PROTECTION DETAIL REG I O N A L AIRPORT CONTROL DIVISION wire Fend Fitter Fabric - Steel Post Plastic or Asheville Regional 8'Max Standard Strength fabric with wire fence Wire Backfill trench 6'Max.Extra strength fabric without wire fence Wire Fence and Compact Airport 01 thoroughly CL904.P2 Steel Post Terminal CATCH BASIN PROTECTION = _ -- -- -- ttttr NOT TO SCALE M- _ _ _ _ , Upslope Mod a rn izati o n .e F; sa ssf I!ME 'r Plastic or 18-24" Min. .. Wire ties $"Min. 61 Terminal Drive Suite 1 Fletcher, North Carolina 28732 s J 8"down&4" i� 02/16/2022 :24" forward along the trench T GS Project#: 43483.02 Date: Page: Fitter Fabric Construction: CROSS SECTION VIEW Silt Sock/Wattle Silt Sock/Wattle NOTE: 1_ Construct the sediment barrier of standard strength or extra strength synthetic fitter fabrics. 3' 3" Area to be 1. Other materials providing equivalent protection 2. Ensure that the height of the sediment fence does not exceed 24 inches above the ground.(Higher fences may FLOW Area to be FLOW impound volumes of water sufficient to cause failure of the structure) Maintenance- Protected I Protected against erosive velocities may be substituted for 3 Construct the filler fabric from a continuous roll cut to the length of the bamer to avoid joints When joints are I inspect sediment tences at least once a week and aller each 1 I Protected - - - - I st >o f p _ - - _ _ use In silt socks or wattles. necessary,securety fasten the filter cloth only at a support post with 4 feet minimum overlap to the next post. inch or greater rainfall.Make any required repairs immediatety. ��\111111I III////7j -1 2. Fill silt sock/wattle netting uniformly with compost 4. Support standard strength filter fabric by wire mesh fastened securety to the upslope side of the posts_Extend the 2 Should the fabnc of a sediment fence collapse,tear, \��`, CARD 12 Min. C` --wl 2°X 2° 12' Min. ��_ 2°X 2" t0 the desired length SUCK that IOgS d0 not deform. wire mesh support to the bottom of the trench_Fasten the wire reinforcement,then fabric on the upsbpe side of the decompose,or become ineffective,replace it promptly. ��. s's •�/��i� Stakes Stakes 3. Silt sock/Wattle(s)should be installed parallel to fence post.Wire or plastic zip ties should have a minimum 50 pound tensile strength. 3 Remove sediment deposits as necessary to provide adequate of p•�/L 5_ When a wire mesh support fence is used,space posts a maximum of 8 feet apart_Supports should be driven securely storage volume for the next rain and reduce pressure on the ,_� �•9 and a minimum of 10 feet beyond the toe of a into the ground a minimum of 24 inches. fence-Take care to avoid undermining the fence dunng SEAL SECTION SECTION graded slope. Silt Sock/Wattle(s)located below 6. Extra strength titter fabric with 6 foot post spacing does not require a wire mesh support fence.Securely fasten the cleanouts. 053149 = flat areas should be located at the edge of the filter fabric directly to posts.Wire or plastic zip ties should have a minimum of 50 pound tensile strength. 4. Remove all fencing materials and unstable sediment deposits 01/1'8/21 23 land disturbance.The ends of the silt 7. Excavate the trench approximately 4 inches wide and 8 inches deep along the proposed line of the posts and upsbpe and bring the area to grade and stabilize it after the contributing ?•,FN �� .'��\ from the barrier- drainage area has been properly stabilized. ��i •• c "E•' �� sock/wattle(s)should be turned slightly upslope to ��i tiq • vOC� � F<0 MaX• F40 MaX, prevent runoff from going around the end of the 8. Place 12 inches of fabric along the bottom and side of the trench. ///�7j/�IIIDj s 9 Backfll the trench with soil placed over the filter fabric and compact Thorough compaction of the backfill is critical to silt sock/wattle . silt fence performance _ 4. Oak or other durable hardwood stakes with a 2 10. Do not attach filter fabric to existing trees. =1 inch x 2 inch cross section should be driven -11= vertically plumb,through the center of the silt sock/wattle. Stakes should be placed at a NOT TO SCALE maximum interval of 4 feet or a maximum interval a` Trench into of 8 feet if the silt sock/wattle is placed in a 4 inch NATHAN HUDGENS, PE CV Wood Mulch or Compost ground 4" Min. trench. BUNCOMBE COUNTY SOIL NC 053149 co To 1/2 height of log 5. In the event staking is not possible(ie.when EROSION & SEDIMENTATION STANDARD SILT FENCE DETAIL M socks/wattles are used on pavement)heavy o UNTRENCHED INSTALLATION ENTRENCHED INSTALLATION* concrete blocks shall be used behind the silt CONTROL DIVISION REVISION N "THIS APPLICATION MAY NOT BE USED WITH COMPOST sock/wattle to hold it in place during runoff events. NO. DATE DESCRIPTION ISOMETRIC VIEW SOCKS SMALLER THAN 12". MAINTENANCE: 1. Inspect silt sock/wattle at least weekly and after 1 02/16/22 ISSUE FOR CONSTRUCTION each 1 inch or greater rainfall. Remove 2 03/09/22 ADDENDUM 02 j COMPOST SOCK INITIAL FLOW RATES accumulated sediment and any debris as p Mulch or Compost needed to allow for adequate flow. � Compost Sock 8 Inch 12 Inch 18 Inch 24 Inch 32 Inch q 3 05/02/22 AGENCY COMMENTS for Untrenched Socks Area To Be Design Diameter (200 nm) (300 nm) (450 nm) (600 nm) (750 nm) 2. Silt sock/Wattle must be replaced if clogged or 04 Q) 4 01/18/23 ASI011 Protected torn. C L904.P2 Q) Maximum Slope 600 Feet 750 Feet 1,000 Feet 1,300 Feet 1,650 Feet 3. If ponding becomes excessive,the Silt SILT FENCE U Sheet Flow Length(<2%) (183 m) (229 m) (305 m) (396 m) (500 m) Silt Sock/ sock/wattle may need to be replaced with a NOT TO SCALE Wattle Hydraulic Flow 7.5 gpm/ft 11.3 gpm/ft 15.0 gpm/ft 22.5 gpm/ft 30.0 gpm/ft larger diameter or a different measure. Work Area Through Rate (94 I/m/m) (141 I/m/m) (188 I/m/m) (281 I/m/m (374 I/m/m) 4. Reinstall if damaged or dislodged. 5. Silt socks/wattles shall be inspected until land disturbance is compete and the area above the INSTALL LOCKING 0 0GRATE measure has been permanently stabilized. X 36" O 48"36° 7? 48 ON STRUCTURE TOP U NORTH ?`�0 PUBLIC oI Envi onmentaIQuallty SILT SOCK FOR PERIMETER AND INLET PROTECTION NOTES: STREET OR � EFFECT1 ADJACENT EXISTING STRUCTURE AND X X / 1* EXISTING PIPE CONNECTIONS ?r? N0 PROPERTY TO BE MAINTAINED. RIM ?110 2122 �? ELEVATION TO BE RAISED AND Q) ORIFICE ADDED TO CONVERT 2122' 1.5" ORIFICE / -S 02 EXISTING STRUCTURE TO " I.E. =2117.00 CO CL904.P2 OUTLET STRUCTURE FOR 6" SKIMMER DEVICE TO 20' RADIUS (MIN) J SILT SOCK TEMPORARY SEDIMENT BASIN. BE ATTACHED TO o NOT TO SCALE SKIMMER DEVICE ORIFICE TO OUTLET STRUCTURE AT 2"-3" CLEAN, COARSE BE GROUTED UPON ORIFICE ELEVATION. 6" / AGGREGATE Q CONVERSION OF SEDIMENT ORIFICE TO BE GROUTED TOP OF BERM TOP OF BERM 4 BASIN TO POST-CONSTRUCTION AT WALL OF OUTLET O DETENTION POND. D i STRUCTURE TO A ELEV. = 2124.00 ELEV. = 2124.00 DETENTION POND SEE DRY / DIAMETER OF 1.5"AT 20' STRUCTURE DETAIL FOR FINAL ORIFICE ELEVATION. i RIM AND ORIFICE ELEVATIONS. o 4 4 / /\/ \ \ /\/\/� SITE DETAILS c+) r\//\�/%\// /\\//\\//\\//\\//\\//\\//\\//\\//\\//\�/%�//%/�\ �Q / z M z O cn �I STABILIZED SPILLWAY (RIP-RAP, TURF REINFORCING MAT EQUAL OF LAN DLOK TRM. INSTALL PER GEOTEXTILE FABRIC BOTTOM OF POND UNDERLAYMENT CL904P2 MANUFACTURES RECOMMENDATIONS.) (BEYOND) (MIRAFI HP370 OR EQUAL) ELEV. = 2122.90 6" 72" OUTLET 07 05 I.E. =2095.35 06 Q CL904.P2 CL904.P2 CL904.P2 a, POND EMERGENCY SPILLWAY TEMPORARY SEDIMENT BASIN OUTLET STRUCTURE CONSTRUCTION ENTRANCE NOT TO SCALE NOT TO SCALE NOT TO SCALE CONSTRUCTION DOCUMENTS