PL11_C-07.pdf

DRAWING NUMBER PLATE

SCALE: DATE: SHEET:

WASHINGTON AQUEDUCT

WASHINGTON, DC

MAINTENANCE AND IMPROVEMENTS

MARCH 2022

SECOND HIGH RESERVOIR

Nova Consulting

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

STEVEN S. EAGLE, PE

NO SCALE

80.2-2.7-11 11

C-07

CIVIL

EROSION AND SEDIMENT

CONTROL STANDARD DETAILS

SCALE : NTS

CURB INLET PROTECTION

C-06

SCALE : NTS

TREE ROOT PROTECTION WITH SILT FENCE

C-07

SCALE : NTS

SUPER SILT FENCE

C-07

SCALE : NTS

SILT FENCE

C-06

SCALE : NTS

ENTRANCE WITH WASH RACK OPTION

STABILIZED CONSTRUCTION

C-06

SECTION VIEW

CONSTRUCTION SPECIFICATIONS

PERSPECTIVE VIEW CROSS SECTION

PERSPECTIVE VIEW

CROSS SECTION

TOP VIEW

JOINING TWO ADJACENT

SILT FENCE SECTIONS

CONSTRUCTION SPECIFICATIONS

ISOMETRIC VIEW - WASH RACK IN SCE ISOMETRIC VIEW - WASH RACK ALONG SCE

SECTION A-A

CONSTRUCTION SPECIFICATIONS

ISOMETRIC SECTION A-A

CONSTRUCTION SPECIFICATIONS

VALUEPROPERTY TEST METHOD

SUPER SILT FENCE DESIGN CRITERIA:

TABLE 3.3: SUPER SILT FENCE SLOPE LENGTH AND FENCE LENGTH CONSTRAINTS

SLOPE SLOPE STEEPNESS

SUPER SILT FENCE LENGTH

(MAXIMUM) (FEET)

SLOPE LENGTH (MAXIMUM)

(FEET)

CONSTRUCTION SPECIFICATIONS

VALUEPROPERTY TEST METHOD

SILT FENCE DESIGN CRITERIA:

SLOPE STEEPNESS SLOPE LENGTH (MAXIMUM) (FEET) SILT FENCE LENGTH (MAXIMUM) (FEET)

TABLE 3.1: SILT FENCE SLOPE LENGTH AND FENCE LENGTH CONSTRAINTS

1 1

1 SSE5/2022 AMENDMENT 0002

AutoCAD SHX Text

REV

AutoCAD SHX Text

DATE

AutoCAD SHX Text

DESCRIPTION

AutoCAD SHX Text

BY

AutoCAD SHX Text US Army Corps

AutoCAD SHX Text of Engineers

AutoCAD SHX Text

A/E PRINCIPAL

AutoCAD SHX Text

SEAL:

AutoCAD SHX Text

APPROVED:

AutoCAD SHX Text

STANDARD SYMBOL

AutoCAD SHX Text

CIP

AutoCAD SHX Text 6 FT MAX. SPACING OF 2 IN. x 4 IN. SPACERS

AutoCAD SHX Text

14 IN. WIRE IN. WIRE MESH

AutoCAD SHX Text A

AutoCAD SHX Text

34 TO 1- IN. 12 IN. SIZED STONE

AutoCAD SHX Text

34 TO 1- IN. STONE12 IN. STONE

AutoCAD SHX Text 2 IN. x 4 IN. ANCHORS 2 FT MIN. LENGTH

AutoCAD SHX Text 2 IN. x 4 IN. SPACER

AutoCAD SHX Text 2 IN. x 4 IN. WEIR

AutoCAD SHX Text

EDGE OF GUTTER PAN

AutoCAD SHX Text

NONWOVEN GEOTEXTILE

AutoCAD SHX Text A

AutoCAD SHX Text

NONWOVEN GEOTEXTILE

AutoCAD SHX Text 2 IN. x 4 IN. WEIR

AutoCAD SHX Text 2 FT. MIN. LENGTH OF 2 IN. x 4 IN.

AutoCAD SHX Text

SANDBAG OR OTHER APPROVED ANCHORING METHOD

AutoCAD SHX Text 2 IN. x 4 IN. SPACER

AutoCAD SHX Text

WIRE MESH

AutoCAD SHX Text

MAXIMUM DRAINAGE AREA = ACRE14 ACRE

AutoCAD SHX Text

STANDARD SYMBOL

AutoCAD SHX Text

EXISTING GRADE

AutoCAD SHX Text

KEEP OUT TREE PROTECTION AREA

AutoCAD SHX Text

TREE PROTECTION ZONE

AutoCAD SHX Text

TP

AutoCAD SHX Text

TP

AutoCAD SHX Text

TP

AutoCAD SHX Text

TP

AutoCAD SHX Text

TREE TO BE PROTECTED

AutoCAD SHX Text

EXISTING UNDISTURBED SOIL

AutoCAD SHX Text

ROOTS TO REMAIN

AutoCAD SHX Text

ROOTS PRUNE PER PLAN (IF REQ'D)

AutoCAD SHX Text

6 IN. WOOD CHIP MULCH

AutoCAD SHX Text

ROOT PROTECTION MATTING ANCHORED BY 12 IN. LANDSCAPE NAILS @ AVERAGE SPACING

AutoCAD SHX Text

COVER MATTING WITH STEEL PLATE OR APPROVED ALTERNATE FOR HEAVY TRAFFIC USE

AutoCAD SHX Text SILT FENCE TO BE INSTALLED ON GRADE WITH NO TRENCH, MATTING TO BE INSTALLED OVER SILT FABRIC AND ANCHORED BY MINIMUM 12 IN. LANDSCAPE NAILS @ 12 IN. LANDSCAPE NAILS @ 12 FT O.C. SECOND LAYER OF SILT FABRIC TO BE INSTALLED ON TOP OF MATTING

AutoCAD SHX Text

1. MATTING MATERIAL MUST BE DOUBLE SIDED GEOCOMPOSITE, GEONET CORE WITH NON-WOVEN COVERING (SUCH AS TENSAR ROADRAIN RD7) MATTING MATERIAL MUST BE DOUBLE SIDED GEOCOMPOSITE, GEONET CORE WITH NON-WOVEN COVERING (SUCH AS TENSAR ROADRAIN RD7) OR APPROVED EQUIVALENT. 2. INSTALL ROOT PROTECTION MATTING BY A CERTIFIED ARBORIST. INSTALL ROOT PROTECTION MATTING BY A CERTIFIED ARBORIST. 3. TO BE USED FOR DESIGNATED TEMPORARY CONSTRUCTION ACCESS AND STOCKPILE AREAS. TO BE USED FOR DESIGNATED TEMPORARY CONSTRUCTION ACCESS AND STOCKPILE AREAS. 4. PLACE MATTING ON 6 IN. WOOD CHIP MULCH UNLESS OTHERWISE DIRECTED. PLACE MATTING ON 6 IN. WOOD CHIP MULCH UNLESS OTHERWISE DIRECTED. 5. FOR HEAVY TRAFFIC AREAS, COVER MATTING WITH STEEL PLATES. FOR HEAVY TRAFFIC AREAS, COVER MATTING WITH STEEL PLATES.

AutoCAD SHX Text

TREE PROTECTION FENCE

AutoCAD SHX Text

STANDARD SYMBOL

AutoCAD SHX Text

SSF

AutoCAD SHX Text

FLOW

AutoCAD SHX Text

FILTER CLOTH

AutoCAD SHX Text

CHAIN LINK FENCING

AutoCAD SHX Text

EMBED FILTER CLOTH 8 IN.

AutoCAD SHX Text

MINIMUM INTO GROUND

AutoCAD SHX Text

16 IN. MIN. 1ST LAYER OF

AutoCAD SHX Text

FILTER CLOTH*

AutoCAD SHX Text

GROUND

AutoCAD SHX Text

SURFACE

AutoCAD SHX Text

FLOW

AutoCAD SHX Text

FLOW

AutoCAD SHX Text

2-1/2 IN. DIAMETER

AutoCAD SHX Text

GALVANIZED

AutoCAD SHX Text

OR ALUMINUM

AutoCAD SHX Text

POSTS

AutoCAD SHX Text NOTE: IF MULTIPLE LAYERS ARE REQUIRED TO ATTAIN NECESSARY HEIGHT. FENCE POST SPACING SHALL NOT EXCEED 10 FT. CENTER TO CENTER.

AutoCAD SHX Text

10 FT. MAXIMUM

AutoCAD SHX Text

34 IN. MINIMUM

AutoCAD SHX Text

36 IN. MINIMUM

AutoCAD SHX Text

8 IN. MINIMUM

AutoCAD SHX Text

34 IN. MINIMUM

AutoCAD SHX Text

STANDARD SYMBOL

AutoCAD SHX Text

SECTION A

AutoCAD SHX Text

SECTION B

AutoCAD SHX Text

5 FT. MAXIMUM CENTER TO

AutoCAD SHX Text

CENTER

AutoCAD SHX Text

FLOW

AutoCAD SHX Text

FLOW

AutoCAD SHX Text

FILTER

AutoCAD SHX Text

CLOTH

AutoCAD SHX Text

FLOW

AutoCAD SHX Text

SF

AutoCAD SHX Text

FENCE POST SECTION MINIMUM 20 IN. ABOVE GROUND

AutoCAD SHX Text

FENCE POST DRIVEN A MINIMUM OF 16. INTO THE GROUND

AutoCAD SHX Text

UNDISTURBED GROUND

AutoCAD SHX Text

EMBED GEOTEXTILE CLASS F A MINIMUM OF 8 IN. VERTICALLY INTO THE GROUND

AutoCAD SHX Text

STANDARD SYMBOL

AutoCAD SHX Text

50 FT MIN.

AutoCAD SHX Text

50 FT MIN.

AutoCAD SHX Text

1. USE A WASH RACK DESIGNED AND CONSTRUCTED/MANUFACTURED FOR THE ANTICIPATED TRAFFIC LOADS. CONCRETE, STEEL, OR OTHER MATERIALS ARE ACCEPTABLE. PRE-FABRICATED UNITS SUCH AS CATTLE GUARDS ARE ACCEPTABLE. USE MINIMUM DIMENSION OF 6 FEET x 10 FEET. ORIENT DIRECTION OF RIBS AS SHOWN ON THE DETAIL. APPROACHES TO THE WASH RACK SHOULD BE A MINIMUM OF 25 FEET ON BOTH SIDES. 2. INSTALL PRIOR TO, ALONG SIDE OF, OR AS PART OF THE SCE. INSTALL PRIOR TO, ALONG SIDE OF, OR AS PART OF THE SCE. 3. DIRECT WASH WATER TO AN APPROVED SEDIMENT TRAPPING DEVICE. DIRECT WASH WATER TO AN APPROVED SEDIMENT TRAPPING DEVICE. 4. KEEP AREA UNDER WASH RACK FREE OF ACCUMULATED SEDIMENT. IF DAMAGED, REPAIR OR REPLACE WASH RACK.KEEP AREA UNDER WASH RACK FREE OF ACCUMULATED SEDIMENT. IF DAMAGED, REPAIR OR REPLACE WASH RACK.

AutoCAD SHX Text

10 FT

AutoCAD SHX Text

MIN.

AutoCAD SHX Text

10 FT

AutoCAD SHX Text

10 FT

AutoCAD SHX Text

10 FT.

AutoCAD SHX Text

6 FT

AutoCAD SHX Text

MIN.

AutoCAD SHX Text

6 FT MIN.

AutoCAD SHX Text A

AutoCAD SHX Text A

AutoCAD SHX Text

6 FT

AutoCAD SHX Text

MIN.

AutoCAD SHX Text

12 IN. (MIN)

AutoCAD SHX Text

12 IN MIN.

AutoCAD SHX Text

MOUNTABLE BERM

AutoCAD SHX Text

WATER SUPPLY

AutoCAD SHX Text

PUBLIC ROAD OR OTHER STABLE SURFACE

AutoCAD SHX Text

WASH RACK

AutoCAD SHX Text

DRAIN CLEAN-OUTS TO A SEDIMENT TRAPPING DEVICE

AutoCAD SHX Text

PUBLIC ROAD OR OTHER STABLE SURFACE

AutoCAD SHX Text

WASH RACK

AutoCAD SHX Text

MOUNTABLE BERM

AutoCAD SHX Text

WATER SUPPLY

AutoCAD SHX Text

10 FT.

AutoCAD SHX Text

WASH RACK

AutoCAD SHX Text

DRAIN CLEAN-OUTS TO A SEDIMENT TRAPPING DEVICE

AutoCAD SHX Text

SCE

AutoCAD SHX Text

10 FT. (MIN)

AutoCAD SHX Text NOTE: CONTRACTOR SHALL FOLLOW THE DESIGN, CONSTRUCTION, AND MAINTENANCE SPECIFICATIONS FOR EACH MEASURE PER THE 2017 DOEE EROSION CONTROL GUIDEBOOK.

AutoCAD SHX Text

1. ATTACH A CONTINUOUS PIECE OF 1/2 INCH x 1/2 INCH WIRE MESH, (30 INCHES MINIMUM WIDTH BY THROAT LENGTH, PLUS 4 FEET) TO THE 2-INCH x ATTACH A CONTINUOUS PIECE OF 1/2 INCH x 1/2 INCH WIRE MESH, (30 INCHES MINIMUM WIDTH BY THROAT LENGTH, PLUS 4 FEET) TO THE 2-INCH x INCH x 1/2 INCH WIRE MESH, (30 INCHES MINIMUM WIDTH BY THROAT LENGTH, PLUS 4 FEET) TO THE 2-INCH x 4-INCH WEIR (MEASURING THROAT LENGTH PLUS 2 FEET) AS SHOWN ON THE STANDARD DRAWING. 2. PLACE A CONTINUOUS PIECE OF GEOTEXTILE CLASS E OF THE SAME DIMENSIONS AS THE WIRE MESH OVER THE WIRE MESH AND SECURELY ATTACH TO THE PLACE A CONTINUOUS PIECE OF GEOTEXTILE CLASS E OF THE SAME DIMENSIONS AS THE WIRE MESH OVER THE WIRE MESH AND SECURELY ATTACH TO THE 2-INCH x 4-INCH WEIR. 3. SECURELY NAIL THE 2-INCH x 4-INCH WEIR TO A 9-INCH LONG VERTICAL SPACER TO BE LOCATED BETWEEN THE WEIR AND THE INLET FACE (MAXIMUM 4 FEET APART). 4. PLACE THE ASSEMBLY AGAINST THE INLET THROAT AND NAIL (MINIMUM 2-FOOT LENGTHS OF 2-INCHES x 4-INCHES TO THE TOP OF THE WEIR AT SPACER PLACE THE ASSEMBLY AGAINST THE INLET THROAT AND NAIL (MINIMUM 2-FOOT LENGTHS OF 2-INCHES x 4-INCHES TO THE TOP OF THE WEIR AT SPACER LOCATIONS). EXTEND THESE 2-INCH x 4-INCH ANCHORS ACROSS THE INLET TOP AND BE HELD IN PLACE BY SANDBAGS OR ALTERNATE WEIGHT. 5. PLACE THE ASSEMBLY SO THAT THE END SPACERS ARE 1 FOOT BEYOND BOTH ENDS OF THE THROAT OPENING. PLACE THE ASSEMBLY SO THAT THE END SPACERS ARE 1 FOOT BEYOND BOTH ENDS OF THE THROAT OPENING. 6. FORM THE 1/2-INCH x 1/2-INCH WIRE MESH AND THE GEOTEXTILE FABRIC TO THE CONCRETE GUTTER AND AGAINST THE FACE OF THE CURB ON BOTH SIDES FORM THE 1/2-INCH x 1/2-INCH WIRE MESH AND THE GEOTEXTILE FABRIC TO THE CONCRETE GUTTER AND AGAINST THE FACE OF THE CURB ON BOTH SIDES OF THE INLET. PLACE CLEAN 3/4 TO 1-1/2 INCH STONE OVER THE WIRE MESH AND GEOTEXTILE IN SUCH A MANNER AS TO PREVENT WATER FROM ENTERING THE INLET UNDER OR AROUND THE GEOTEXTILE. 7. THIS TYPE OF PROTECTION MUST BE INSPECTED FREQUENTLY AND THE GEOTEXTILE FABRIC AND STONE REPLACED WHEN CLOGGED WITH SEDIMENT. THIS TYPE OF PROTECTION MUST BE INSPECTED FREQUENTLY AND THE GEOTEXTILE FABRIC AND STONE REPLACED WHEN CLOGGED WITH SEDIMENT. 8. ASSURE THAT STORM FLOWS DO NOT BYPASS THE INLET BY INSTALLING A TEMPORARY EARTH OR ASPHALT DIKE TO DIRECT THE FLOW TO THE INLET. ASSURE THAT STORM FLOWS DO NOT BYPASS THE INLET BY INSTALLING A TEMPORARY EARTH OR ASPHALT DIKE TO DIRECT THE FLOW TO THE INLET. 9. IF THERE ARE ANY SIGNS OF STREET FLOODING OR WATER PONDING, THIS STRUCTURE MUST BE CLEANED OR REPLACED, OR REDESIGNED WITH A VIABLE IF THERE ARE ANY SIGNS OF STREET FLOODING OR WATER PONDING, THIS STRUCTURE MUST BE CLEANED OR REPLACED, OR REDESIGNED WITH A VIABLE ALTERNATIVE SUCH AS 3.3 FILTER SOCK. *NOTE: FILTER SOCK IS AN ALTERNATIVE WHICH IS EASIER TO INSTALL AND MAINTAIN THAN THIS STANDARD DESIGN.

AutoCAD SHX Text

CHAIN LINK FENCE WITH 1 LAYER OF FILTER CLOTH

AutoCAD SHX Text

TENSILE STRENGTH

AutoCAD SHX Text

TENSILE MODULUS

AutoCAD SHX Text

FLOW RATE

AutoCAD SHX Text

FILTERING EFFICIENCY

AutoCAD SHX Text

50 LBS/IN (MIN.)

AutoCAD SHX Text

20 LBS/IN (MIN.)

AutoCAD SHX Text

0.3 GAL/FT /MINUTE (MAX.) 2 /MINUTE (MAX.)

AutoCAD SHX Text

75% (MIN.)

AutoCAD SHX Text

ASTM D-5141

AutoCAD SHX Text

ASTM D-5141

AutoCAD SHX Text

ASTM D-4595

AutoCAD SHX Text

ASTM D-4595

AutoCAD SHX Text

1. FENCING MUST BE AT LEAST 42 INCHES IN HEIGHT AND CONSTRUCTED IN ACCORDANCE WITH THE LATEST DISTRICT DEPARTMENT OF TRANSPORTATION (DDOT) FENCING MUST BE AT LEAST 42 INCHES IN HEIGHT AND CONSTRUCTED IN ACCORDANCE WITH THE LATEST DISTRICT DEPARTMENT OF TRANSPORTATION (DDOT) DETAILS FOR CHAIN LINK FENCING. THE DDOT SPECIFICATION FOR A 6-FOOT FENCE MUST BE USED, SUBSTITUTING MINIMUM 42-INCH FABRIC AND 6-FOOT LENGTH POSTS. POSTS DO NOT NEED TO BE SET IN CONCRETE. 2. SECURELY FASTEN CHAIN LINK FENCE TO THE FENCE POSTS WITH WIRE TIES. THE LOWER TENSION WIRE, BRACE AND TRUSS RODS, DRIVE ANCHORS AND POST SECURELY FASTEN CHAIN LINK FENCE TO THE FENCE POSTS WITH WIRE TIES. THE LOWER TENSION WIRE, BRACE AND TRUSS RODS, DRIVE ANCHORS AND POST CAPS ARE NOT REQUIRED EXCEPT ON THE ENDS OF THE FENCE. 3. SECURELY FASTEN GEOTEXTILE TO THE CHAIN LINK FENCE WITH TIES SPACED EVERY 24 INCHES AT THE TOP AND MID-SECTION. SECURELY FASTEN GEOTEXTILE TO THE CHAIN LINK FENCE WITH TIES SPACED EVERY 24 INCHES AT THE TOP AND MID-SECTION. 4. EMBED GEOTEXTILE A MINIMUM OF 8 INCHES INTO THE GROUND. EMBED GEOTEXTILE A MINIMUM OF 8 INCHES INTO THE GROUND. 5. WHEN TWO SECTIONS OF GEOTEXTILE FABRIC ADJOIN EACH OTHER, FOLD AND OVERLAP BY 6 INCHES. WHEN TWO SECTIONS OF GEOTEXTILE FABRIC ADJOIN EACH OTHER, FOLD AND OVERLAP BY 6 INCHES. 6. GEOTEXTILE MUST MEET THE FOLLOWING REQUIREMENTS FOR GEOTEXTILE CLASS F (FROM TABLE 3.2-SEE BELOW): GEOTEXTILE MUST MEET THE FOLLOWING REQUIREMENTS FOR GEOTEXTILE CLASS F (FROM TABLE 3.2-SEE BELOW):

AutoCAD SHX Text

7. INSPECT SUPER SILT FENCE AFTER EACH RAINFALL EVENT, AT LEAST DAILY DURING SUSTAINED RAINFALL EVENTS, AND MAINTAIN WHEN BULGES OCCUR OR WHEN SEDIMENT ACCUMULATION REACHES 30% OF THE FABRIC HEIGHT.

AutoCAD SHX Text 0 - 10%

AutoCAD SHX Text 10 - 20%

AutoCAD SHX Text 20 - 33%

AutoCAD SHX Text 33 - 50%

AutoCAD SHX Text > 50%

AutoCAD SHX Text 0 - 10:1

AutoCAD SHX Text 10:1 - 5:1

AutoCAD SHX Text 5:1 - 3:1

AutoCAD SHX Text 3:1 - 2:1

AutoCAD SHX Text > 2:1

AutoCAD SHX Text Unlimited

AutoCAD SHX Text Unlimited

AutoCAD SHX Text NOTE: TO AVOID CIRCUMVENTION, EXTEND THE ENDS OF THE SILT FENCE 5 HORIZONTAL FEET UPSLOPE AT 45-DEGREE ANGLES RELATIVE TO THE MAIN FENCE ALIGNMENT TO PREVENT SEDIMENT ACCUMULATION.

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text 1,500

AutoCAD SHX Text 1,00

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

36 IN. MINIMUM LENGTH FENCE POST, DRIVEN A MINIMUM OF 16 IN. INTO GROUND

AutoCAD SHX Text

16 IN. MINIMUM HEIGHT OF GEOTEXTILE CLASS F

AutoCAD SHX Text

8 IN. MINIMUM DEPTH IN GROUND

AutoCAD SHX Text

36 IN. MINIMUM FENCE POST LENGTH

AutoCAD SHX Text

POSTS

AutoCAD SHX Text

STAPLE

AutoCAD SHX Text

STAPLE

AutoCAD SHX Text

1. FENCE POSTS MUST BE A MINIMUM OF 36 IN. LONG DRIVEN 16 IN. MINIMUM INTO THE GROUND. WOOD POSTS MUST BE OF SOUND QUALITY HARDWOOD WITH 1-1/2 FENCE POSTS MUST BE A MINIMUM OF 36 IN. LONG DRIVEN 16 IN. MINIMUM INTO THE GROUND. WOOD POSTS MUST BE OF SOUND QUALITY HARDWOOD WITH 1-1/2 IN. MINIMUM WIDTH WHEN SQUARE CUT, OR 1-3/4 IN. MINIMUM DIAMETER WHEN ROUND. STEEL POSTS MUST BE STANDARD T OR U SECTION WEIGHING NOT LESS THAN 1.00 POUND PER LINEAR FOOT. 2. FASTEN GEOTEXTILE SECURELY TO EACH FENCE POST WITH WIRE TIES OR STAPLES AT TOP AND MID-SECTION. GEOTEXTILE MUST MEET THE FOLLOWING FASTEN GEOTEXTILE SECURELY TO EACH FENCE POST WITH WIRE TIES OR STAPLES AT TOP AND MID-SECTION. GEOTEXTILE MUST MEET THE FOLLOWING REQUIREMENTS (GEOTEXTILE CLASS F):

AutoCAD SHX Text

3. WHERE ENDS OF GEOTEXTILE FABRIC COME TOGETHER, OVERLAP, FOLD, AND STAPLE THEM TO PREVENT SEDIMENT BYPASS. 4. INSPECT SILT FENCE AFTER EACH RAINFALL EVENT, AT LEAST DAILY DURING SUSTAINED RAINFALL EVENTS, AND MAINTAIN WHEN BULGES OCCUR OR WHEN SEDIMENT ACCUMULATION REACHES 30% OF THE FABRIC HEIGHT.

AutoCAD SHX Text

TENSILE STRENGTH

AutoCAD SHX Text

TENSILE MODULUS

AutoCAD SHX Text

FLOW RATE

AutoCAD SHX Text

FILTERING EFFICIENCY

AutoCAD SHX Text

50 LBS/IN (MIN.)

AutoCAD SHX Text

20 LBS/IN (MIN.)

AutoCAD SHX Text

0.3 GAL/FT

AutoCAD SHX Text

AutoCAD SHX Text

/MINUTE (MAX.)

AutoCAD SHX Text

75%%% (MIN.)

AutoCAD SHX Text

ASTM D-5141

AutoCAD SHX Text

ASTM D-5141

AutoCAD SHX Text

ASTM D-4595

AutoCAD SHX Text

ASTM D-4595

AutoCAD SHX Text

FLATTER THAN 50:1 (2%)

AutoCAD SHX Text

UNLIMITED

AutoCAD SHX Text > 50:1 TO 10:1 (2% to 10%)

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text > 10:1 TO 5:1 (10% to 20%)

AutoCAD SHX Text > 5:1 TO 3:1 (20% to 33%)

AutoCAD SHX Text > 3:1 TO 2:1 (33% to 50%)

AutoCAD SHX Text > 2:1 (> 50%)

AutoCAD SHX Text

UNLIMITED

AutoCAD SHX Text 1,000

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text NOTE: IN AREAS OF LESS THAN 2% SLOPE AND SANDY SOILS (USDA GENERAL CLASSIFICATION SYSTEM, SOIL CLASS A) MAXIMUM SLOPE LENGTH AND SILT FENCE LENGTH WILL BE UNLIMITED. IN THESE AREAS A SILT FENCE MAY BE THE ONLY PERIMETER CONTROL REQUIRED. TO AVOID CIRCUMVENTION, EXTEND THE ENDS OF THE SILT FENCE UPSLOPE TO PREVENT WATER AND SEDIMENT FROM AVOID CIRCUMVENTION, EXTEND THE ENDS OF THE SILT FENCE UPSLOPE TO PREVENT WATER AND SEDIMENT FROM FLOWING AROUND THE ENDS OF THE FENCE.