You
may download the DWG drawing into Auto CADD 2000 (or later)
for your use/modification.
If you are not familiar with DWG format, please utilize the PDF
format for easier viewing
capabilities. You can download each drawing individually below
or view all five
drawings in one PDF document.
Installation Guidelines of RECPs during
Slope Applications
Step One:
Site
Preparation - The site should be fine graded to a smooth profile
and relatively free from all weeds, clods, stones, roots, sticks,
rivulets, gullies, crusting and caking. Fill any voids and make
the slope is compacted properly.
Step Two:
Seeding - Seed the area to be vegetated. Select a seed mix for vegetation
adapted to the local geographical area.
Step Three:
Prepare
the Anchor Trench - At the top of the slope dig an anchor trench
6 inches deep by six
inches wide. The RECP will be anchored into the trench by staples.
Allow at least 3 feet from the crest of the slope to the anchor
trench. When the RECP is installed on the flat over the crest
of the final grade, it will help prevent water from getting under
the RECP and causing soil erosion. Staples should be installed
on the top of the RECP one foot on center along the outside parameter
of the RECP.
Step Four:
Secure the RECP in the Anchor
Trench - Begin RECP placement past the anchor trench. The Federal Highway
Administration proposed FP-03 Specifications suggest that the
RECP should extend 30 inches past the anchor trench. Run the
RECP down the anchor trench. Anchor the RECP with staples in
the anchor trench. Be sure to drive staples or stakes flush with
the soil surface. The FHWA FP-03 Specifications should be used
as a guideline only. ECTC suggests that you take into consideration
the RECP type, soil and site conditions when securuing the RECP
into the anchor trench.
Securing the Anchor Trench using Single Net RECP - Backfill
the anchor trench and compact the soil. Place seed over the compacted
soil. Cover the compacted soil with the remaining 12 inches of
the terminal end of the RECP. Staple or stake terminal end down
slope of the anchor trench on 12-inch centers.
Step Five:
RECP Deployment - Starting at
the crest of the slope, roll the RECP down the slope in a controlled
manner. Approximately every 20-25 feet pull the RECP to take
out any excess slack. The goal is to have the RECPs contour and
have intimate contact with the soil.
Step Six:
Staple or Stake the RECP - Secure
the overlap or the edges with staples. The typical installation
will require one placed at three to five feet intervals along
the vertical length of the RECPs. Staples should be staggered
every 18 to 24 inches horizontally across the RECP.
The FHWA proposed FP-03 Specifications recommend
that all RECP materials be securely anchored at an approximate
rate of 1.5 staples or stakes per square yard. However, soil
types and other site conditions may require additional stapling.
If the RECP needs to be spliced in the middle
of a slope be sure the RECP is “shingled” with up-slope
RECP overlapping the down-slope RECP. There should be four inches
of overlap in a splice. Use a staple check slot to secure the
overlap. A staple check slot is made by placing a row of staples
four inches on center and then placing a second row of staples
four inches on center, staggered from the first row.
Step Seven:
Securing the RECP at the Slope
Toe - Roll the RECP two feet past the toe of the slope.
Secure with staples or stakes one foot on center across the RECP.
View all five
drawings in one PDF document.
For more information regarding RECPs and their effective useage,
please contact the Erosion Control Technology
Council. In addition, please also review the document regarding
Guidelines for Installing Rolled Erosion Control
Products in Slope and Channel Applications on the website for more
detailed descriptions of the steps listed above. |
