SC-Coppell HS-SP000114Sent By:
GLENN ENGINEERING;
97271 94229;
Jan-l~O0
2:17PU; Page 2
ANCHOR SLOT DETAIL
BURY THE UP-CHANNEL ENO
OF THE: MATI1NG IN A 6"
DEEP TRENCH
EROSION CONTROL MATTING
PROTECTING EXPOSED
SURFACE OR SLOPE
EROSION
CONTROL
MATI'INGS
JAN. '98 1160A
Sent By: GLENN ENGINEERING; ~ 9727194229; Jan-l~i, O0 2:18PM; Page 3/5
EROSION CONTROL .MATTING GENERAL NOTE-~:
1. STRIPS OF MATTING SHALL BE iNSTALLED PARALLEL TO
THE DIRECTION OF FLOW OVER THE SURFACE WHICH IS TO BE
PROTECTED.
2. THE UP-CHANNEL END OF THE MATTING SHALL BE BURIED
IN A TRENCH MEASURING 6 INCHES DEEP AND 6 INCHES WIDE
FOR THE ENTIRE WIDTH OF THE END. THE SOIL SHALL BE
BACKFILLED INTO THE TRENCH AND TAMPED FIRMLY. STAPLES
SHAM. BE PLACED EVERY 12 INCHES ALONG THE END OF THE
MATTING.
5. EDGES OF ADJACENT STRIPS OF MATTING SHALL BE
OVERLAPPED A MINIMUM OF 4 INCHES AND SHALL BE STAPLED
EVERY 5 FEET ALONG THE OVERLAP.
4. WHEN JOINING STRIPS OF MATRNG END TO END, A TRENCH
SIMILAR TO THE ONE DUG AT THE BEGINNING OF THE ORIGINAL
STRIP SHALL BE DUG WITH THE UP-CHANNEL END OF THE
NEW STRIP BEING PLACED IN A LIKE MANNER IN THE TRENCH
AS THE BEGINNING END OF THE ORIGINAL STRIP. THE END OF
THE STRIP BEING FOLDED UNDER AT LEAST 12 INCHES.
STAPLES SHALL BE INSTALLED AT 12 INCH INTERVALS ALONG
THE WIDTH OF THE STRIP NOT MORE THAN 6 INCHES FROM
THE TRENCH.
5. IN SITUATIONS WHERE ERODIBLE SOILS, STEEP SLOPES OR
HIGH VELOCITY FLOWS ARE ENCOUNTERED, A FOLD OF THE
MATTING SHALL BE INSERTED INTO A 6 INCH TRENCH AND
TAMPED FIRMLY. STAPLES SHALL BE INSTALLED AT 12 INCH
INTERVALS ALONG THE TRENCH.
6. STAPLES FOR ANCHORING SOIL STABILIZING MATERIALS
SHALL BE MADE OF 10 GAUGE WIRE OR HEAVIER. THEY SHALL
BE 6 TO 10 INCHES IN LENGTH, WITH THE LONGER STAPLES
BEING USED IN LOOSE OR UNSTABLE SOILS. THERE SHALL BE
ONE STAPLE FOR EACH FOUR (4) SQUARE FEET OF MATTING
TO ASSURE PROPER BONDING BETWEEN THE SOIL AND THE
MAT MATERIAL.
EROSION CONTROL MATTINGS
,, JAN. '98
Sent By: GLENN ENGZNEERING; -- 9727194229; Jan-l~O0 2:19PM; Page 4/5
MATERIALS
Item 2.22.2.
shown on thc plan.st.. s~_. iai ps~vlsuO~ or a~ .
' ' ies: ...... gn~u~
TM,,.., ,=,o. ,o
ITEM 2.23. GEOTEXTILE
2.23.1. GENERAL
Oeotexfiles are woven or non-woven synthetic fabrics which arc designed to be used for subsurface drainage, crosion
control and soil stabilization applications, and non-woven syntbetic fabrics designed for use in paving applications.
2.2~,2 MATB~IAL R~QUIR~I~IT$
The gcotextile fabric ~all be inert to commonly encountered chemicals and hydrocarbons. The fabric shaft be pack-
aged, stored and handl~ in a manner to prevent damage or deterioration which may be caused by moisture, excess
sunlight, ro&nts or other vermin.
2.2,$,3. GEOTEXTI~ USED IN DRAINAGE, ERO$1ON CONTROL AND STABLIZATION APPUCATIONS
The fabric shall corrform to the following &vcrmffe mil minimum values (lot mmm-2 sumdard deviations), as delgr-
mined by Federal Highway Administration Tas~ Forcc 2~ guidclir~s cited below, measured in thc w¢alccst direction:
mst~.,~ion 1.' ........ 1'opi¢ .... I ~~II ~,~,,* 'S'~i;iii~ao.
....I ~ l~ul ~ I~ LO~mO
LOw M~. Hi V~
~ D 4632 ~ Elon~ion ........ NA NA 1~% !5% NA NA NA NA
~ D 4533 Tr~idaI T~ (!~.) ......... 25 50 30.,, ,,,,50 30 40 5Q _ 7~
AS~ D 751 ~c~ ~si) .... ~ 80 40 ~ .. ~ 40 75 I I0 t~
JANUARY 1998 159
Sent By: GLENN
Item 2.23.4.
ENGINEERING; A 9727194229; Jan-l~O0 2:19PM; Page 5/5
MATERIALS
2,2,1,,4. GEOTEXTILES USED IN SILT FENCING
The fabric should conform to the following properties, ns determined by the Federal Highway Administration Task
Force 25 Guidelines, as measured in the weakest direction:
ASTM D 4632 Orab Strength . ' 90 lbs. ~, 12 inJminute
ASTM D 4632 Grab Elongation 15% ~ 12 inyminute
ASTM D 4751 Equiv.aicnt Op~ning $i~,.(,E.,,05) U.S, s!e, ve No. 20
ASTM D 4491 Permittivity > .01 sec. -~
ASTM D 4355 U.V. Resistance (500,.hrs. ~s~, ) .... 7(~o, .....
2.2L$. GEOTEXTILE$ USED IN PAVIN~ APPLIOATIONS
The fabric should conform to the following properti~, as determined by the Federal Highway Administration Task
Force 25 Guidelines using ASTM Test Methods, excep~ where noted:
ASTM D 4632 Grab_S .u~... gth 80 lbs. ~ 12 in./rninut~
AS'I'M D 4632 l]longation O Break 50% O 12 in,/minute
Texas SDHPT ~ ,,,,As~ phalt Retention ,, , 0.5, ozJsq, ft. , ....
ASTM D 276 Melting Point 300*F.
2.R3J, CERTIFICATION
The manufacturer, if nnluired by the ow'NBa, shall provide documents setting for thc name and manufacturer, the
chemical composition of the filaments or yarns and test values of the properties of the geotextile. The manufacturer
must certify that the material meets or exceeds these specifications.
2.2~.7, CONSTRUCTION METHOD~
Construction methods for each type unit shall be provided by the manufacturer and approved by the OWNER based on
the site specific use.
~2aJ, NEdECTION
Geotextite may be rejected for failure to meet any of the ~quirem~nt~ of thi~ specification.
160 JANUARY 1998