HomeMy WebLinkAboutSW3210302_Plansheet C.3 - Grading/Drainage Plan_20220823GRADING AND DRAINAGE NOTES
1. REFER TO THE GRADING AND DRAINAGE AND DETAILS FOR RELATED NOTES.
2. ALL ELEVATIONS ARE IN REFERENCE TO THE BENCHMARK OF SITE SURVEY BY
HONEYCUTT LAND SURVEYING (828-464-0702). CONTRACTOR SHALL VERIFY
THE BENCHMARK PRIOR TO GROUND BREAKING.
3. THE PROPOSED CONTOURS AND SPOT ELEVATIONS SHOWN WITHIN ROADWAYS,
PARKING LOTS, AND SIDEWALK AREAS REFLECT FINISHED ELEVATIONS
INCLUDING PAVEMENT, REFER TO PAVEMENT CROSS SECTION DATA TO
ESTABLISH CORRECT SUBBASE OR AGGREGATE BASE COURSE ELEVATIONS TO
BE COMPLETED UNDER THIS CONTRACT.
4. THE CONTRACTOR SHALL IMMEDIATELY REPORT TO OWNER ANY DISCREPANCIES
FOUND BETWEEN ACTUAL FIELD CONDITIONS AND CONSTRUCTION DOCUMENTS
AND SHALL WAIT FOR INSTRUCTION PRIOR TO PROCEEDING.
5. CONTRACTOR SHALL VERIFY LOCATION OF ALL EXISTING UTILITIES IN THE
FIELD PRIOR TO BEGINNING CONSTRUCTION.
6. CONTRACTOR SHALL BLEND NEW EARTHWORK SMOOTHLY TO TRANSITION BACK
TO EXISTING GRADE.
7. ALL FILL SHALL BE PLACED IN MAXIMUM 8-INCH LIFTS AND COMPACTED.
ALL FILL WITHIN LIMITS OF BUILDING AND PAVEMENT AREAS SHALL BE
COMPACTED TO 100% STD. PROCTOR DENSITY WITHIN THE TOP 24 INCHES
AND A MINIMUM 98% STD. PROCTOR DENSITY BELOW 24-INCH DEPTH. FILL
WITHIN LANDSCAPED AREAS SHALL BE COMPACTED TO MINIMUM 90% STD.
PROCTOR DENSITY.
8. LIMITS OF DISTURBANCE SHOWN ON GRADING PLAN ARE BASED UPON THE
APPROXIMATE CUT AND FILL SLOPE LIMITS, OR OTHER GRADING
REQUIREMENTS.
9. CONTRACTOR SHALL ENSURE POSITIVE DRAINAGE SUCH THAT RUNOFF WILL
DRAIN BY GRAVITY FLOW ACROSS NEW PAVEMENT AREAS TO NEW OR
EXISTING DRAINAGE INLETS, OR SHEET OVERLAND.
10. ALL GRADED OR DISTURBED AREAS BEYOND THE LIMITS OF PAVING,
SIDEWALKS, BUILDINGS, ETC. THAT ARE NOT OTHERWISE LANDSCAPED PER
THE LANDSCAPING PLAN, SHALL BE STABILIZED WITH A NEW LAWN SEEDED IN
ACCORDANCE WITH THE SEEDING SPECIFICATION ON THE SEEDING SHEET.
CONTRACTOR SHALL MAINTAIN SEEDED AREAS UNTIL A HEALTHY STAND OF
GRASS IS ESTABLISHED.
11. SHABELDEEN ENGINEERING, PA HAS NOT PERFORMED ANY GEOTECHICAL
EVALUATIONS OF THE SUBJECT PROPERTY AND HAS NOT MADE ANY
DETERMINATIONS AS TO THE SUITABILITY OF SITE SOILS FOR USE AS FILL
BENEATH PROPOSED BUILDINGS, DRIVEWAYS, PARKING AREAS, OR FOR OTHER
USES; NOR SLOPE STABILITY. ALL EARTHWORK SHALL BE COMPLETED IN
ACCORDANCE WITH THE RECOMMENDATIONS OF A QUALIFIED GEOTECHINICAL
ENGINEER WHO SHALL BE RETAINED BY THE OWNER.
GENERAL NOTES
1. NO WETLANDS EXIST WITHIN THE PROJECT AREA
2. VEGETATION. THE FOLLOWING CRITERIA APPLY TO VEGETATION IN AND AROUND THE
WET POND:
2.1. THE DAM STRUCTURE, INCLUDING FRONT AND BACK EMBANKMENT SLOPES, OF
THE POND SHALL BE VEGETATED WITH NON -CLUMPING TURF GRASS; TREES
AND WOODY SHRUBS SHALL NOT BE ALLOWED; AND
2.2. (B) THE VEGETATED SHELF SHALL BE PLANTED WITH A MINIMUM OF THREE
DIVERSE SPECIES OF HERBACEOUS, NATIVE VEGETATION AT A MINIMUM DENSITY
OF 50 PLANTS PER 200 SQUARE FEET OF SHELF AREA.
3. THE VEGETATIVE SHELF SHALL BE PLANTED WITH A MIX OF THE FOLLOWING:
SPIREA, ITEA, SILKY DOGWOOD, AND SWAMP AZALEA.
PD 1.9 (!DPD
EQUIP. STORAGE-1
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ROAD ALIGNMENT
STATION
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PROPOSED ROAD
ALIGNMENT
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-1.9
2.50%
TRASH RACK 5
WEIR CREST 6"
TEMP. POOL
EL. 942.00 4'
2.5" ORIFICE
PERM. P00� INV 940.00
EL. 940.00
36" HDPE PII
INV 937.52
CONTROL STRUCTUI�L_
(cs-scm)
NOTES:
1. PRE -CAST CONCRETE 4' X 4' PRE -CAST CONCRETE STRUCTURE (NCDOT STD. 840.31)
2. ALL PRE -CAST STRUCTURES SHALL MEET ALL APPLICABLE NCDOT STANDARDS.
3. HDPE SHALL BE ADS N-12 OR EQUAL INSTALLED PER MANUFACTURER'S RECOMMENDATIONS
10
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co`ti S _ RIM 953.50
947.90 Q53.50 I
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P15 I I / °) / / l I // ' I �' i / TOP OF 4' BERM
\ \ / / I \ / / �� ' 77�7- PID EL. 944.25L�
S-5 1 h \� I /
- / \
-6 s 953.60 / I
I
\ I
\ \ \ I 9ss I \ \ I I
RIM 95
O \ \ INV 94
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EOP it T
EOP
-s-- EAST MAIDEN RD (SR1855) - -- -- P/L ------------------------------------------------------------------------------
WET POND DIAGRAM (NTS)
CROSS-SECTION B-B'
4' EL. 944.25 (TOP OF BERM) - 101' 4'
- - - EL_941_00 (VEGETATED SHELF)_ 83'- - - 3
315� F ........... EL. 940.00 (PERMANENT POOL) - 71'
- EL. 932_75 (BOTTOM) - 42' -
VEGETATED SHELF -
? 7S� LOPS VEGETATED SHELF
6'; 6:1 SLOPE OAF Z�S
6'; 6:1 SLOPE
MAIN POOL EL. 932.25 (SED. STORAGE) - 40'
STRUCTURE &PIPE TABLE
NAME
DETAILS
GRATE = 953.69
S-1
INV = 949.00
P-1 INV OUT = 949.00
GRATE = 953.50
INV = 947.92
S-2
P-1 INV IN = 947.92
P-2 INV OUT = 947.92
GRATE = 953.80
INV = 947.00
S-3
P-2 INV IN = 947.00
P-9 INV IN = 949.00
P-3 INV OUT = 947.00
GRATE = 954.09
INV = 946.50
S-4
P-3 INV IN = 946.50
P-10 INV IN = 946.50
P-4 INV OUT = 946.50
GRATE = 953.02
S-5
INV = 950.00
P-5 INV OUT = 950.00
GRATE = 953.50
INV = 949.39
S-6
P-5 INV IN = 949.39
P-6 INV OUT = 949.39
GRATE = 950.23
INV = 947.00
S-7
P-6 INV IN = 947.00
P-7 INV OUT = 947.00
GRATE = 949.87
INV = 943.50
S-8
P-7 INV IN = 945.10
P-4 INV IN = 943.50
P-8 INV OUT = 943.50
GRATE = 950.27
S-9 (JB)
INV = 940.27
P-11 INV OUT = 946.56
P-10 INV OUT = 946.56
GRATE = 957.84
INV = 953.39
S-10
P-11 INV IN = 953.39
P-12 INV IN = 953.39
GRATE = 957.02
INV = 954.02
S-11
P-13 INV OUT = 954.02
P-12 INV OUT = 954.02
GRATE = 959.94
S-12
INV = 956.94
P-13 INV IN = 956.94
GRATE = 947.00
INV = 935.36
S-13
P-8 INV IN = 943.21
P-13.1 INV OUT = 935.36
0 40 80
Feet
SCALE: 1 "=40'
'4LLI 4-4
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642 PROJECT NO.
WET POND DIAGRAM (NTS
CROSS-SECTION A -A'
EL. 944.25 (TOP OF BERM) - 177'
now ow
7
- 5' Depth
3•
-EL 935_00--------EL_941.00 (TOP VEGETATED SHELF) - 149'
- --------------- --------------------------------------------------------------- --- - --- - -
S�OAF 2 3!�
6' 29 �------------- EL. 940.00 PERM.-PL OO_ 106------------------------------ - -
OPF-
^5� s E.L. 932.75 (BOTTOM) - 77
VEGETATED SHELF 7' EL. 932.25 (SEDIMENT STORAGE) - 75' P�
VEGETATED SHELF
6'; 6:1 SLOPE F WIDTH z_
5,0' 6'; 6:1 SLOPE
FOREBAY ENTRANCE SHALL FOREBAY
BE 6" DEEPER THAN EXIT
MAIN POOL
Know what's below.
Call before you dig.
REVISIONS:
NO. DATE: BY
1 5/6/22 DS
2 8/22/22 DS
GRADING
SHEET NO.
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