2011-09-09_REVISION - M1981185 ‎(40)‎

• Permit No: M1981185
• IBM Index Class Name: REVISION
• Doc Date: 9/9/2011
• Doc Name: Attachment 3- Revised Appl. Maps
• From: R Squared, Inc.
• To: DRMS
• Type & Sequence: CN1
• Media Type: D
• Archive: No

L= VARIES
I'I1 %„
1,4 , 2% MAXIMUM SLOPE
GEOTEXTILE ( e \\ N
EROSION CONTROL 0, I
(CLASS 2)
SECTION VIEW ALONG DITCH FLOWLINE
6" MIN. COVER OVER GEOTEXTILE
FLOW
FL DITCH
SUBEXCAVATE
BELOW FLOWLINE
it POINT A
r
[ OR DITCH
RIPRAP
POINT B
TYPICAL SECTION VIEW
iR POINT A
ANA:, .
r; �! 0, 01;!��!:! �!�.x•_!1
GEOTEXTILE
EROSION CONTROL
(CLASS 2)
8'
SECTION DETAIL
NOTES:
1. RIPRAP SIZE D• = 6" OR AS SHOWN ON THE PLANS.
2. THE ENDS OF RIPRAP CHECK DAM SHALL BE A MINIMUM
OF 6 IN. HIGHER THAN CENTER OF CHECK DAM.
ROCK CHECK DAM
24" MIN.
CDOT M-206-1, SHT. B
ROCK CHECK DAM
DRAINAGE AREA WEIR LENGTH
(ACRES) (FEET)
1
2
3 8
6" MIN.
NF POINTS "A" SHALL BE HIGHER THAN
POINT "B" AND BELOW POINTS "C ".
FLO
24" CREST HEIGHT
6 "MIN.
NATIVE SOIL OR
COMPACTED BACKFILL
GEOTEXTILE
ANCHORED
IN TRENCH
um",
GEOTEXTILE
STAPLED TO
POSTS (TYP.)
TRENCH
6 "x6"
END SECTION DETAIL (PLAN VIEW)
GEOTEXTILE SHALL BE FOLDED AROUND TWO POSTS
ONE FULL TURN. SECURE GEOTEXTILE TO POST
WITH THREE STAPLES MINIMUM.
GEOTEXTILE EROSION CONTRIL
(CLASS 1)
\■
\O,r
24"
MIN.
Iii BACKFIL
MIN
SILT FENCE,
24"
M N.
M N.
GEOTEXTILE SHALL BE ATTACHED TO WOOD POSTS WITH THREE OR
MORE STAPLES PER POST.
STAPLES SHALL BE 1 /2"
WOOD POST SHALL BE 11/4" X 1 NOMINAL.
NOTES
I. SILT FENCE SHALL HAVE A MAXIMUM DRAINAGE AREA OF ONE - QUARTER
ACRE PER 100 FEET OF SILT FENCE LENGTH; MAXIMUM SLOPE LENGTH
BEHIND BARRIER IS 100 FEET; MAXIMUM GRADIENT BEHIND THE BARRIER
IS 2:1.
2. SILT FENCE USED AT TOE OF SLOPE SHALL BE PLACED 5 TO 10 FEET
BEYOND TOE OF SLOPE TO PROVIDE STORAGE CAPACITY.
3. SILT FENCE SHALL BE PLACED ON THE CONTOUR, WITH ENDS FLARED
UP SLOPE.
WEIR LENGTH (X)
\`� � \� �sc.
SECTION B -B
GEOTEXTILE SECTION A
\ II \
POST B
6" x 6"
TRENCH
FLOW
POSTS SHALL BE TIGHTLY ABUTTED WITH NO
GAPS TO PREVENT POTENTIAL FLOW - THROUGH
OF SEDIMENT AT JOINT.
WEIR INVERT � 1; - •i v v
I /4 Iq✓I I v
I ?
X,_
v.
�` I e o � o
I� I 1
W
Nk I.77
.S "
/ /iWZWWWYI+T:YI. IZ *Z4ZC
GEOTEXTILE SECTION B
POST A
JOINING SECTION DETAIL (PLAN VIEW)
FOLD GEOTEXTILE AROUND EACH POST ONE FULL
TURN. SECURE GEOTEXTILE TO POST WITH THREE
STAPLES MINIMUM.
CDOT M-20B -1 , SHT. 10
SILT FENCE APPLICATION
21 OR -
- FLATTER –
1
f 4' MIN.
BOTTOM
ISOMETRIC VIEW 1'
SILT FENCE
LENGTH
1 1 r1111111111111 1 1 III
5 TO ID'
SECTION A
TOE OF SLOPE PR[
B f�
OUTLET
SILT FEN(
r SIDE SLOPE — 21 OR FLATTER
THE LENGTH TO WIDTH RATIO IS 2:1 B fJ
PLAN VIEW +'
18" (MIN.)
OVERFLOW
VARIES
FLAT BOTTOM
3.5' MAX.
18" MIN
_�� �._ �._ • ��_ . .
D 12" ` o� 4
\� 't \ ,\� \ \ \ # c 7 \Y\\ �nD\ •I �; kI •; •