SW6191004_C-502_1/22/2020

1
FOR OFFICIAL USE ONLY
2
3
5 1 6 1 7 1 8 1 9 1 10
4' MAX.
G
F
E
FBI
C
n
SPIGOT END ON INLET END SECTIONS
HUB END ON OUTLET END SECTIONS
E
PLAN
— BAR OR STEEL FABRIC
REINFORCING
C B
A
L ---i :::
SECTION A -A
FRONT ELEVATION
END SECTION DIMENSIONS
DIA
A
B
C
D
E
15"
6"
2'-3"
1'-9"
4'-0"
2'-6"
FLARED END SECTION DETAIL
CU101 IC-502 NOT TO SCALE
50' MIN.
NCDOT #5 OR #5•
WASHED STONE
GENERAL NOTES:
1. UNIFORMLY GRADE A SHALLOW DEPRESSION
APPROACHING THE INLET.
2. DRIVE 5-FOOT STEEL POSTS 2 FEET INTO THE
GROUND SURROUNDING THE INLET. SPACE
POSTS EVENLY AROUND THE PERIMETER OF
THE INLET, A MAXIMUM OF 4 FEET APART.
3. SURROUND THE POSTS WITH WIRE MESH
HARDWARE CLOTH. SECURE THE WIRE MESH
TO THE STEEL POSTS AT THE TOP, MIDDLE,
AND BOTTOM. PLACING A 2-FOOT FLAP OF
THE WIRE MESH UNDER THE GRAVEL FOR
ANCHORING IS RECOMMENDED.
4. PLACE CLEAN GRAVEL (NC DOT #5 OR #57
STONE) ON A 2:1 SLOPE WITH A HEIGHT OF 16
INCHES AROUND THE WIRE, AND SMOOTH TO
AN EVEN GRADE.
5. ONCE THE CONTRIBUTING DRAINAGE AREA
HAS BEEN STABILIZED, REMOVE
ACCUMULATED SEDIMENT, AND ESTABLISH
FINAL GRADING ELEVATIONS.
6. COMPACT THE AREA PROPERLY AND
STABILIZED IT WITH GROUNDCOVER.
FILTERED
WAT E R
NCDOT #5 OR #57
WASHED STONE
mono
uuum
4n nAi ins "AnnIAiAnr: CLOTH
MAINTENANCE:
INSPECT INLETS AT LEAST WEEKLY AND AFTER
EACH SIGNIFICANT (Y INCH OR GREATER)
RAINFALL EVENT. CLEAR THE MESH WIRE OF
ANY DEBRIS OR OTHER OBJECTS TO PROVIDE
ADEQUATE FLOW FOR SUBSEQUENT RAINS.
TAKE CARE NOT TO DAMAGE OR UNDERCUT THE
WIRE MESH DURING SEDIMENT REMOVAL.
REPLACE STONE AS NEEDED.
HARDWARE CLOTH AND GRAVEL INLET PROTECTION
CG 101 1 C-502 NOT TO SCALE
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°� 90000010O�J0 00 °0 0 ROADWAY 50'MIN.
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CONSTRUCTION SPECIFICATIONS FABRIC UNDER STONE `
(TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT) MAINTENANCE: CROSS SECTION
IT IS THE CONTRACTOR'S RESPONSIBILITY TO INSURE THAT
1. CLEAR THE ENTRANCE AND EXIT AREA OF ALL VEGETATION, ROOTS SEDIMENT IS NOT TRACKED ONTO THE EXISTING PAVED
AND OTHER OBJECTIONABLE MATERIAL AND PROPERLY GRADE IT. STREET. THE ENTRANCE /EXIT SHALL BE MAINTAINED IN A
2. PLACE THE GRAVEL TO THE SPECIFIC GRADE AND DIMENSIONS CONDITION WHICH WILL PREVENT TRACKING OR FLOW OF
SHOWN ON THE PLANS, AND SMOOTH IT. MUD ONTO PUBLIC STREETS OR RIGHTS -OF -WAY. THIS
MAY REQUIRE PERIODIC TOP DRESSING WITH NCDOT
3. PROVIDE DRAINAGE TO CARRY WATER TO SEDIMENT TRAP OR CLASS A STONE, AS CONDITIONS DEMAND AND REPAIR
OTHER SUITABLE OUTLET. AND/OR CLEANOUT OF ANY STRUCTURES USED TO TRAP
SEDIMENT. ALL MATERIALS SPILLED, DROPPED, WASHED,
4. USE GEOTEXTILE FABRICS BECAUSE THEY IMPROVE STABILITY OF OR TRACKED FROM VEHICLES OR SITE ONTO ROADWAYS
THE FOUNDATION IN LOCATIONS SUBJECT TO SEEPAGE OR OR INTO STORM DRAINS SHALL BE REMOVED IMMEDIATELY.
HIGH WATER TABLE.
5. IF CONSTRUCTION ON THE SITES AREA SUCH THAT THE MUD IS
NOT REMOVED BY THE CONSTRUCTION ENTRANCE, TIRES
OF THE VEHICLES MUST BE WASHED BEFORE LEAVING THE SITE.
TEMPORARY GRAVEL CONSTRUCTION ENTRANCE / EXIT DETAIL
CG101C-502 VOT TO SCALE
2" PEA GRAVEL LAYE
ELEV.=243.0 FT
FILTER FABRIC —
OVERFLOW SEE —
DETAIL 5 THIS
SHEET
NOTES: NOT TO SCALE
1. 5 ACRE MAXIMUM DRAINAGE AREA.
SLOPE PER PLAN NOT
TO EXCEED 3:1 (H:V)
ELEV=244.2
18" COURSE OF CLASS A RIPR/
12" OF NCDOT #5 OR #57
WASHED STONE
ELEV.243.5
SWM#1 ELEV.= 243'
WATER QUALITY VOLUME
OBSERVATION WELL
RUNOFF FILTERS THROUGH
F�0\� GRASS BUFFER STRIP
TRENCH 1.5 FEET DEEP
�1.5-2.5 INCH DIAMETER CLEAN STONE
CLEAN, WASHED SAND, 6" DEEP
(OR FILTER FABRIC EQUIVALENT)
RUNOFF EXFILTRATES THROUGH
UNDISTURBED SUBSOILS.
INFILTRATION TRENCH DETAIL
CG 101 I C-502 NOT TO SCALE
FILTER CLOTH
1.5'
244.5--
�P
PROVIDE 10.0' OF
WIDTH AT DEPTH
SHOWN IN B-B
ELEV.= 244.0'
10.0'
SECTION A -A
SECTION B-B
5.0'
� E
a
X 244.8
SLOPE PER PLAN NOT
TO EXCEED 3:1 (H:V)
ELEV.=244.2'
FILTER CLOTH
SLOPE TO
EX. GRADE
ELEV.=244.5'
5 OVERFLOW DETAIL
CG101 C-502 NOT TO SCALE
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FOR OFFICIAL USE ONLY
ISSUED FOR CONSTRUCTION