SW1210503_Plansheet - C4.0 (Civil Calcs)_20210730

CIVIL DESIGN
4" PVC OUTLET
A
::ZTE- RY
'-,-SKIMMER BASIN 1
PER 01/C5.1
I W-01111
TEMPORARY SKIMMER BASIN
ill 20'
NOTE:
RAINFALL INTENSITY DATA FROM NOAA PUBLISHED POINT
PRECIPITATION INTENSITY DATA FOR THE 5-MINUTE DURATION
10-YEAR RECURRENCE INTERVAL STORM FOR HOT SPRINGS, NC
CLASS B RIP -RAP
OUTLET PROTECTION
EROSION CONTROL MATTING
PER 08/C5.0
CLASS B RIP -
TEMPORARY SKIMMMER BASIN #1
BOTTOM ELEVATION - 1412.0'
DEPTH ELEVATION - 1414.5
EMERGENCY SPILLWAY ELEVATION - 1416.0'
MAX SLOPE BELOW SPILLWAY - 3:1
MAX SLOPE ABOVE SPILLWAY - 3:1
OUTLET PROTECTION:
La = 10 FEET
d5o RIPRAP SIZE = 6 INCHES
APRON WIDTH @ OUTLET = 1 FEET
APRON WIDTH, W = 10.33 FEET
(SEE DETAIL 5, SHEET C5.2)
NOTE:
BASIN CONSTRUCTION CONSISTS ENTIRELY
OF EXCAVATION, THEREFORE NO
EMBANKMENT IS SHOWN.
Culvert Report
Hydrology Report
Hydraflow Express Extension for Autodesk@ Civil 3D@ by Autodesk, Inc.
Thursday, May 14 2020
Hydraflow Express Extension for Autodesk@ Civil 3D@ by Autodesk, Inc.
Friday, May 8 2020
HOT SPRINGS TEMPORARY ACCESS 24 INCH RCP CULVERT
HOT SPRINGS TEMPORARY ACCESS 24 INCH RCP CULVERT DRAINAGE
Invert Elev Dn (ft)
= 1418.00
Calculations
Hydrograph type = Rational
Peak discharge (cfs)
= 13.54
Pipe Length (ft)
= 40.00
Qmin (cfs)
= 0.00
Storm frequency (yrs) = 10
Time interval (min)
= 1
Slope (%)
= 5.90
Qmax (cfs)
= 14.00
Drainage area (ac) = 6.300
Runoff coeff. (C)
= 0.35
Invert Elev Up (ft)
= 1420.36
Tailwater Elev (ft)
= (dc+D)/2
Rainfall Inten (in/hr) = 6.139
Tc by User (min)
= 5
Rise (in)
Shape
= 24.0
= Circular
Highlighted
IDF Curve = SampleExpress.IDF
Rec limb factor
= 1.00
Span (in)
= 24.0
Qtotal(cfs)
= 14.00
No. Barrels
= 1
Qpipe (cfs)
= 14.00
Hydrograph Volume
4,061 (cuft); 0.093 (acft)
n-Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 4.99
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
= 6.22
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
= 1419.67
HGL Up (ft)
= 1421.71
Runoff Hydrograph
Embankment
Hw Elev (ft)
= 1422.34
Top Elevation (ft)
= 1423.36
Hw/D (ft)
= 0.99
Top Width (ft)
= 30.00
Flow Regime
= Inlet Control
Q (cfs) 1 0-yr frequency
Q (cfs)
Crest Width (ft)
= 5.00
14.00
14.00
HOT SPRINGS TEMPORARY ACCESS 24 INCH RCP CULVERT
-4.
1411.
1418N
1417
OUTLET PROTECTION REQUIRED DIMENSIONS
OUTLET PROTECTION FOR DIVERSION SWALE - 1
L. = 30 FEET
d5o RIPRAP SIZE = 5 INCHES
W, 3 FEET
W2 30 FEET
d = 1.125 FEET
(SEE DETAIL 5, SHEET C5.1)
OUTLET PROTECTION FOR DIVERSION SWALE - 2
L. = 20 FEET
d5o RIPRAP SIZE = 5 INCHES
W, 1 FEET
W2 21 FEET
d = 1.125 FEET
(SEE DETAIL 5, SHEET C5.1)
OUTLET PROTECTION FOR SKIMMER BASIN
L. = 10 FEET
d5o RIPRAP SIZE 5 INCHES
W, 1 FEET
W2 11 FEET
d = 1.125 FEET
(SEE DETAIL 5, SHEET C5.1)
12.00
10.00
MM
4.00
Runoff Hyd - Qp 13.54 (cfs)
PROJECT DENSITY CALCULATIONS (BUA
SPRING CREEK DRAINAGE AREA:
TOTAL AREA = 109210 SF
BUILT UPON AREA:,
ON -SITE BUILDINGS = 216 SF
OTHER ON -SITE (EQUIPMENT PADS & PV RACKING POSTS) = 896 SF
EQUIPMENT PADS = 893 SF
PV RACKIING POST = 171 POST x (2.68 in 2/pOST)/(144 in 2 /SF) = 3 SF
TOTAL BUA = 1112 SF
SPRING CREEK DRAINAGE AREA DENSITY 1112 SF 109210 SF 1.02 %
FRENCH BROAD RIVER DRAINAGE AREA:
TOTAL AREA = 574556 SF
BUILT UPON AREA:
OTHER ON -SITE (EQUIPMENT PADS & PV RACKING POSTS) 107 SF
EQUIPMENT PADS = 94 SF
2/p 2
PV RACKIING POST =687 POSTx(2.68 in OST)/(144in/SF)=13SF
TOTAL BUA = 107 SF
FRENCH BROAD RIVER DRAINAGE AREA DENSITY 107 SF 574556 SF 0.02 %
TOTAL PROJECT DENSITY 1219 SF 683766 SF 0.18 %
TEMPORARY SEDIMENT/SKIMMER BASINS
BASIN ID
AREA (SQ. FT.)
AREA(ACRES)
VOLUME (CF)
VOLUME PROVIDED
RUNOFF COEFFICIENT
10-YR INTENSITY
Q-10 (CFS)
REQUIRED AREA (325 SF/CFS)
PROVIDED SURFACE AREA (SF)
SKIMMER SIZE (IN)
SKIMMER ORIFICE (IN)
DEWATERING TIME (DAYS)
1800 CF/AC
(CF)
(IN/HR)
TEMPORARY SKIMMER BASIN
348480
8.0
14400
16432
0.6
6.14
29.00
9425
9430
4.00
2.00
2.70
TEMPORARY DIVERSION DITCHES
RUNOFF
10-YR RAINFALL
DRAINAGE AREA, A
TOTAL RUNOFF, Q
LENGTH
CHANNEL
BOTTOM
SIDE
CHANNEL
CHANNEL
CHANNELAVG.
NORMAL CHANNEL
FREEBOARD
AVERAGE
SHEAR STRESS
COMPOST
DITCH ID
COEFFICENT
INTENSITY (IN/HR)
(ACRES)
(CFS)
(FT)
SECTION
WIDTH
SLOPE
DEPTH (FT)
WIDTH (FT)
SLOPE (FT/FT)
DEPTH (FT)
(FT)
VELOCITY(FPS)
(PSF)
n-VALUE
TEMPORARY LINER
SOCK
DIVERSION DITCH - 1
0.18
6.14
6.72
9.50
1023.00
V
0
3:1
1.50
9
0.072
0.79
0.71
5.20
3.55
0.04
NAG SC 150
SEE PLAN
DIVERSION DITCH - 2
0.18
6.14
0.76
1.02
225.00
V
0
3:1
1.50
9
0.156
0.33
1.17
3.42
3.21
0.05
NAG SC 150
SEE PLAN
TURF REINFORCEMENT
DIVERSION DITCH - 3
0.60
6.14
6.00
22.00
873.00
V
0
2:1
1.50
9
0.100
1.20
0.30
7.78
10.48
0.04
SEE PLAN
MAT
DIVERSION DITCH - 4
0.60
6.14
2.00
7.40
196.00
V
0
3:1
1.50
9
0.020
0.92
0.58
3.03
1.15
0.04
NAG SC 150
SEE PLAN
NOTE:
SEE SHEET C3.1 FOR LOCATIONS OF TURF
REINFORCEMENT REQUIREMENTS AND
COMPOST SOCK LOCATIONS. ALL OTHER
AREAS OF DIVERSION DITCHES INSTALL NAG
SC1 50 OR EQUAL UNLESS OTHERWISE
SPECIFIED.
12.00
10.00
Iwo]
4.00
2.00
0.00
10
Time (min)
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11
SEI PROFESSIONAL SERVICES
39845 MATHEWS LANE
PAONIA, CO 81428
[e-mail]
970.527.3920
ENGINEER
EPC CONTRACTOR
wATZTSILA
WARTSILA NORTH AMERICA, INC
11710 N. GESSNER ROAD, SUITE A
HOUSTON, TX 77064
[phone]
DUKE PROJECT NUMBER
446-14
DUKE SHEET NUMBER
HSPOO-CA-C-CV-01
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PHASE
IFC REV3
DATE 2/10/21
DRAWING SCALE
AS SHOWN
NOTE: If this drawing is not 24x36" it has been
revised from its original size the scales noted on
drawing/details are no longer applicable.
DRAWN BY DRAWN BY
REB
DRAWING NAME
CIVIL
CALCULATIONS
C4.0