HomeMy WebLinkAbout213.201.CONDITIONS OF USE
1.1.FOR PERMANENT STABILIZATION OF SLOPES 2H:1V OR GREATER AND WITH MORE THAN 10 FEET OF VERTICAL RELIEF.
1.2.IN CONJUNCTION WITH SEED FOR FINAL STABILIZATION OF A SLOPE, NOT FOR TEMPORARY COVER. HOWEVER, THEY MAY BE USED FOR TEMPORARY APPLICATIONS AS
LONG AS THE PRODUCT IS NOT DAMAGED BY REPEATED HANDLING.
2.DESIGN AND INSTALLATION SPECIFICATIONS
2.1.INSTALLATION IS CRITICAL TO THE EFFECTIVENESS OF THIS PRODUCT. IF GOOD GROUND CONTACT IS NOT ACHIEVED, RUNOFF CAN CONCENTRATE UNDER THE
PRODUCT, RESULTING IN SIGNIFICANT EROSION.
2.2.JUTE MATTING MUST BE USED IN CONJUNCTION WITH MULCH. EXCELSIOR, WOVEN STRAW, BLANKETS, AND COIR (COCONUT FIBER) BLANKETS MAY BE INSTALLED
WITHOUT MULCH.
2.3.PURELY SYNTHETIC BLANKETS ARE ALLOWED, BUT SHALL ONLY BE USED FOR LONG-TERM STABILIZATION OF WATERWAYS. THE ORGANIC BLANKETS ARE BETTER FOR
SLOPE PROTECTION AND SHORT-TERM WATERWAY PROTECTION BECAUSE THEY RETAIN AND PROVIDE ORGANIC MATTER TO THE SOIL, SUBSTANTIALLY IMPROVING THE
SPEED AND SUCCESS OF RE-VEGETATION.
2.4.DO NOT STRETCH BLANKETS/MATTINGS TIGHT - ALLOW THE ROLLS TO MOLD TO ANY IRREGULARITIES.
2.5.SLOPE SURFACE SHALL BE SMOOTH BEFORE PLACEMENT FOR PROPER SOIL CONTACT.
2.6.STAPLING PATTERN AS PER MANUFACTURER'S RECOMMENDATION.
2.7.IF THERE IS A BERM AT THE TOP OF SLOPE, ANCHOR UPSLOPE OF THE BERM.
2.8.FOR SLOPES LESS THAN 3H:1V, ROLLS MAY BE PLACED IN HORIZONTAL STRIPS.
2.9.LIME, FERTILIZE, AND SEED BEFORE INSTALLATION. PLANTING OF SHRUBS, TREES, ETC. SHOULD OCCUR AFTER INSTALLATION.
3.MAINTENANCE STANDARDS
3.1.GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND THERE MUST NOT BE EROSION BENEATH THE NET OR BLANKET.
3.2.AREAS OF THE NET OR BLANKET THAT ARE DAMAGED OR NOT IN CLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND STAPLED.
3.3.IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM SHALL BE FIXED AND THE ERODED AREA PROTECTED.
NOTES:
2" MIN. OVERLAP
6" MIN. OVERLAP
ANCHOR IN 6" x 6" MIN. TRENCH AND
STAPLE AT 12" INTERVALS
BRING MATERIAL DOWN TO A LEVEL AREA, TURN THE
END UNDER 4", AND STAPLE AT 12" INTERVALS
STAPLE OVERLAPS 5' MAX. SPACING
SLOPE INSTALLATIONS OF NETS AND
BLANKETS
STD. PLAN - 213.20
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
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9/28/2018 | 9:45 AM PDT