HomeMy WebLinkAboutWPO201700011 Calculations WPO VSMP 2017-12-18 vow
MEADE BUILDERS OFFICE BUILDING
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HYDROLOGIC/HYDRAULIC CALCULATIONS FOR
MEADE BUILDERS OFFICE BUILDING
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September 18, 2017
LOCATION: Fes'
Tax Map 78, Parcel 15C3
■'" City of Charlottesville, Virginia
...t.,0_41/
s. DEVELOPER: • '174111114P7// ::,
Southern Development, LLC. �.�
o U MICHA J'F MYERS >1.,
170 South Pantops Drive s L' o.33028
Charlottesville, Virginia 22911 : / k.
41, PREPARED BY:
lay C� .
40, 172
Engineering & Design, LLC ON AT
172 South Pantops Drive 64.44-6/2r.
Charlottesville, VA 22911
P: 434.979.8121
F: 434.979.1681
•
INDEX Page
+r' Summary 2-3
r CN Value Calculations 4-6
Watershed Schematic 7
Hydrographs Index 8
1111,
Hyd. No. 2Pre Development Overall Drainage Area A 9-10
• Hyd. No. 3: Pre Development Overall Drainage Area B 11-12
Hyd. No.4: Pre Development Overall Drainage Area C-Forrest 13-14
Hyd. No. 11: Combined Pre Development Overall Drainage Area 15-16
vo" Hyd. No. 5: Post Development Overall Drainage Area 1 Un-detained 17-18
rr Hyd. No. 6: Post Development Overall Drainage Area 2 Un-detained 19-20
qvHyd. No. 8: Post Development Overall Drainage Area 3—Forrest Un-detained 21-22
Hyd. No. 7: Post Development Overall Drainage Area—Detained .23-24
Hyd. No. 9: Detention system report(Hyd. No. 7 to Detention System) 25-27
- Hyd. No. 12:Total Post Development Overall Drainage Area(Hyd. No. 5+ Hyd. No.6+ Hyd. No.8+
Hyd. No.9) 28-29
ver
.► Hyd. No. 16: EB Total Area Pre Development 30
Hyd. No. 14: EB Post Development Un-detained 31
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Hyd. No. 15: EB Post Development Detained 32
Hyd. No. 17: EB Combined Post Development Detained and Un-detained (Hyd. 14+ Hyd. 15) 33
quir— Hyd. No. 18: EB Detention system report(Hyd. No15 to Detention system) 34-35
Hyd. No. 20: EB Post Development Combined Energy(Hyd. 14+ Hyd. 18) 36
*Drainage Area Maps are included on Storm Water Management Plan
APPROVED
•+ by the Albemarle County
1 Community Development Department
Date I7/VIJt%
File 1 r017oa11
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MEADE BUILDERS OFFICE BUILDING
40, Stormwater Management Narrative
IOW
41, These hydraulic/hydrologic calculations and the accompanying VSMP plan demonstrate that the technical
criteria IIB for water quality and both channel and flood protection have been exceeded.
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Water Quality
�, Water quality requirements will be addressed by buying offsite nutrient credits. The CN value changes from
68 (1.01 Ac)to 94 (0.48 Ac, Detention Inflow)and 61 (0.53, Un-detained)from predevelopment to post-
development requiring 0.55 lb/yr of Phosphorous removal. The credits will be purchased through the
'w Virginia Nonpoint Source Nutrient Credit Registry in the same Hydrologic Unit Code (HUC)as our project or
Ir an adjacent HUC. The purchase of credits will be a requirement for final VSMP approval.
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Channel/Flood Protection
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"'' The VSMP channel protection requirements have been met by fulfilling the energy balance for the 1-Yr 24
hour storm event for onsite rainfall flowing into the 4 x 86 LF 36 inch HDPE pipes @ 1.2% for storage.
Flood protection has been met by providing adequate capacity in the pipe system to release the 2 and 10-
year disturbed area storms below pre-development values. Pre and Post-development runoff quantity has
been calculated at the outfall of the detention system at the level spreader.
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11.0 Runoff Summary for Energy Balance:
r 1 Yr. Pre-Development Onsite Area Run-Off = 1.06 cfs •
ter 1 Yr. Pre-Development Onsite Area Run-Off Volume = 2,225 cu ft
ler
,ir 1 Yr. Post-Development Onsite Disturbed Area Routed Runoff + Un-detained = 0.41 cfs < 0.46 cfs OK
1 Yr. Post-Development Onsite Disturbed Area Runoff Volume=4,606 cu ft
ter
The Energy Balance Method is intended to achieve a balance between the"energy" exerted on the
.ur downstream by the pre-and post-developed peak discharge. The Energy Balance utilizes the inverse
relationship between pre-and post-developed condition runoff volume to reduce the allowable peak
111, discharge:
41,
Q2Allowable < Q1 pre (Pre Vol,/ Post Vo12)(lF)
4111,
The Improvement Factor(IF) is a statutory hold over from §62.1-44.15:28 that requires the stormwater
4a,,, regulations to improve upon the contributing share of the existing predevelopment runoff characteristics and
site hydrology if stream channel erosion or localized flooding is an existing predevelopment condition.
In this case the disturbed area is under an acre and the improvement factor is (0.90). The resulting required
`"r 1-year, 24-hout storm is:
it
r., 0.41 cfs <_ 1.06 cfs (2,225 cuft/4,604 cuft)(0.90)
The post-development runoff for the energy balance is 0.41 cfs. There is one area where onsite disturbed
area water is not detained and therefore needed to be accounted for in the energy balance and 2yr and 10yr
storm events. The post-developed onsite area to the storage facility is 0.48 Ac with a CN value of 94 while
the post-developed un-detained disturbed area is 0.53 Ac with a CN value of 61.
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MEADE BUILDERS OFFICE BUILDING
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Runoff Summary for Flood Control
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TR-55 Method used
MAXIMUM RELEASE RATE = Qmax= Qpre
2 Year Peak Flowrate Summary
2 Yr Pre-Development Peak Flow= 1.73 cfs (Hyd 11)
2Yr Post-Development Peak Flow= 1.02 cfs (Hyd 12)
r *MAXIMUM FLOWRATE IS MET*
rIr
10 Year Peak Flowrate Summary
VW
VIW 10 Yr Pre-Development Peak Flow=3.89 cfs (Hyd 11)
,Ir 10 Yr Post-Development Peak Flow= 3.82 cfs (Hyd 12)
*MAXIMUM FLOWRATE IS MET*
VW
'" Energy Balance Peak Flowrate Summary
try
(Hyd 16) Pre Q,_yr= 1.06 cfs
isr
(Hyd 15) Post Detained Inflow Q,_yr=1.82 cfs
'rr (Hyd 14) Post Undetained Q,_yr= 0.27 cfs
*4r
(Hyd 18) Pond Routed Q,_yr=0.18 cfs
+'I' (Hyd 20) Pond Routed + Undetained Q,_yr= 0.41 cfs < 0.46 cfs OK
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VW 2-yr, 10-yr Onsite Summary
(Hyd 12) Post QZ_yr= 1.02 cfs < 1.73 cfs OK
(Hyd 12) Post Qi yr= 3.82 cfs < 3.89 cfs OK
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CN Value Calculations-TR55 Method used
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Pre-Developed Area A
Total Area = 12,294.92 0.28 CN
Sq.ft. ac. B Soil Area*CN
r.►
Total Imp. Areas: 3,278.00 0.08 98.00 7.37
110,
Forest/OpenMir 0.00 0.00 55.00 0.00
Space
1110
Managed Turf 9,016.90 0.21 61.00 12.63 Tc (min) 5.00
Total (Area*CN) 20.00
wir
Total 12,294.90 0.28 Average CN 70.86
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"" Pre-Developed Area B
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law Total Area = 19,241.05 0.44 CN
Sq.ft. ac. B Soil Area*CN
- Total Imp. Areas: 6,749.60 0.15 98.00 15.19
ler
rr Forest/Open 0.00 0.00 55.00 0.00
.► Space
r
.► Managed Turf 12,491.50 0.29 61.00 17.49 Tc (min) 5.00
Total (Area*CN) 32.68
taw Total 19,241.10 0.44 Average CN 73.98
+rr
Pre-Developed Area C (Forrest)
imp
Total Area = 12,570.39 0.29 CN
Sq.ft. ac. B Soil Area*CN
.r Total Imp. Areas: 0.00 0.00 98.00 0.00
yr
Forest/Openvw Space 12,570.39 0.29 55.00 15.87
.r
lir Managed Turf 0.00 0.00 61.00 0.00 Tc (min) 5.00
"' Total (Area*CN) 15.87
ler Total 12,570.39 0.29 Average CN 55.00
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4
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MEADE BUILDERS OFFICE BUILDING
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Post-Development Un-detained Area 1
r
Total Area = 8,095.04 0.18 CN
Sq.ft. ac. B Soil Area*CN
Total Imp. Areas: 2,238.18 0.05 98.00 5.04
✓ Forest/Open 0.00 0.00 55.00 0.00
Space
+r►
Managed Turf 5,856.86 0.13 61.00 8.20 Tc (min) 5.00
Total (Area*CN) 13.24
- Total 8,095.04 0.19 Average CN 71.23
rr
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.our Post-Development Un-detained Area 2
r. Total Area = 2,496.88 0.06 CN
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Sq.ft. ac. B Soil Area*CN
Total Imp. Areas: 0.00 0.00 98.00 0.00
gairr
Forest/Open 0.00 0.00 55.00 0.00
Space
011.
s„ Managed Turf 2,496.88 0.06 61.00 3.50 Tc (min) 5.00
Total (Area*CN) 3.50
- Total 2,496.88 0.06 Average CN 61.00
Post-Development Un-detained Area 3 (Forrest)
r
Iry Total Area = 12,570.39 0.29 CN
41110
Sq.ft. ac. B Soil Area*CN
Total Imp. Areas: 0.00 0.00 98.00 0.00
r
Forest/Open 12,570.39 0.29 55.00 15.87
4111 Space
Managed Turf 0.00 0.00 61.00 0.00 Tc 5.00
✓ Total (Area*CN) 15.87
11.
Total 12,570.39 0.29 Average CN 55.00
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5
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10,
41/0
MEADE BUILDERS OFFICE BUILDING
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,., Post-Development Detained Area/Detention Inflow
Total Area = 21,002.60 0.48 CN
Sq.ft. ac. B Soil Area*CN
,.r Total Imp. Areas: 18,670.69 0.43 98.00 42.00
r
r,. Forest/Open 0.00 0.00 55.00 0.00
Space
INF
Managed Turf 2,331.91 0.05 61.00 3.27 Tc (min) 5.00
Total (Area*CN) 45.27
Total 21,002.60 0.48 Average CN 93.89
r
Energy Balance Post-Development Un- Detained Area
r
Total Area = 23,123.55 0.53 CN
Sq.ft. ac. B Soil Area*CN
Total Imp. Areas: 2,238.18 0.05 98.00 5.04
Forest/Open 12,570.00 0.29 55.00 15.87
Space
11.
,,, Managed Turf 8,315.00 0.19 61.00 11.64 Tc (min) 5.00
quo Total (Area*CN) 32.55
.r► Total 23,123.18 0.53 Average CN 61.32
r
.r
rr
Energy Balance Post-Development Detained Area/Detention Inflow
q` Total Area = 21,002.60 0.48 CN
r Sq.ft. ac. B Soil Area*CN
Total Imp. Areas: 18,670.69 0.43 98.00 42.00
r
Forest/Open 0.00 0.00 55.00 0.00
.r.
Space
Managed Turf 2,331.91 0.05 61.00 3.27 Tc (min) 5.00
Total (Area*CN) 45.27
- Total 21,002.60 0.48 Average CN 93.89
ver.
yr
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WATERSHEDS SCHEMATIC
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r� •� EB Post EB Post ;'�
`., Development _.
Development ,,
� Un-detained k�, x
' ,. 1..4 Detained
sr t. f:
•
A = 0.48 ac
CN = 94 A = 0.53 a
Tc = 5 min CN = 61 `:
Tc = 5 min
SWM Facility
1.01 ac
C = 77
Tc 5 min
EB Total Area Pre
Development
EB Post Development
Combined
.+; TOTAL POST DEVELOPED EB Q < Q PRE DEVELOPED
~.,N :;N EB Q
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h �M •
h L•• Ml• ',1
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Post Development Overall Post Development Overall
Drainage Area-Detained Drainage Area 2
•
Un-detained •
Post Development Overall
Drainage Area 3-Forrest
Un-detained Post Development Overall 4. • ''�!
A = 0.48 ac A = 0.06 ac Drainage Area 1 Un-detained
CN = 94 CN = 61
Tc = 5 min Tc = 5 min A = 1.28 ac •+
•
A = 0.29 ac A = 0.18 ac CN = `1
CN = 55 CN = 71 Tc = 5 in
Tc = 5 min Tc = 5 min
Pre Development Overall
Drainage Area A
SWM Facility
Pre Development Overall •••i
Drainage Area B A — 0.44 ac
CN — 74
Tc = min
Pre Development Overall
Drainage Area C-Forrest '•
Total Post Development
Overall Drainage Combined Pre Development
Overall Drainage Area 4.:,...
• = 0.•9 ac .
CN 5.
Tc = Lin
TOTAL POST DEVELOPMENT Q < TOTAL Q PRE DEVELOPMENT
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MEADE BUILDERS OFFICE BUILDING
Hydrographs Index:
Hyd. No. 2: Pre Development Overall Drainage Area A ...9-10
Hyd. No. 3: Pre Development Overall Drainage Area B 11-12
Hyd. No. 4: Pre Development Overall Drainage Area C-Forrest 13-14
Hyd. No. 11: Combined Pre Development Overall Drainage Area 15-16
„r, Hyd. No. 5: Post Development Overall Drainage Area 1 Un-detained 17-18
Hyd. No. 6: Post Development Overall Drainage Area 2 Un-detained 19-20
Hyd. No. 8: Post Development Overall Drainage Area 3—Forrest Un-detained 21-22
Hyd. No. 7: Post Development Overall Drainage Area—Detained 23-24
qw, Hyd. No. 9: Detention system report(Hyd. No. 7 to Detention System) 25-27
Hyd. No. 12: Total Post Development Overall Drainage Area (Hyd. No. 5 + Hyd. No.6 + Hyd. No.8 +
Hyd. No.9) 28-29
�+ Energy Balance (EB) Hydrographs(onsite only):
.r
„s, Hyd. No. 16: EB Total Area Pre Development 30
Hyd. No. 14: EB Post Development Un-detained 31
"'' Hyd. No. 15: EB Post Development Detained 32
'a' Hyd. No. 17: EB Combined Post Development Detained and Un-detained (Hyd. 14+ Hyd. 15) 33
rr Hyd. No. 18: EB Detention system report(Hyd. No15 to Detention system) 34-35
Hyd. No. 20: EB Post Development Combined Energy (Hyd. 14+ Hyd. 18) 36
yr
Please Note: Due to space limitations on the hydrograph reports, titles on PDFs are written
in shorthand. Please use this page for the complete description corresponding to the page
number to avoid confusion.
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MEADE BUILDERS OFFICE BUILDING
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Hydrograph Report
Hydratlow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
`r Hyd. No. 2
gir Pre-Development Overall Drainage Area A
Hydrograph type = SCS Runoff Peak discharge = 0.565 cfs
.rr Storm frequency = 2 yrs Time to peak = 11.97 hrs
Time interval = 2 min Hyd.volume = 1,132 cuft
„. Drainage area = 0.282 ac Curve number = 71
Basin Slope = 0.0% Hydraulic length = 0 ft
ter Tc method = User Time of conc. (Tc) = 5.00 min
qv Total precip. = 3.68 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
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•
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Pre Development A
Q
(cfs) Hyd.No.2—2 Year Q(cfs)
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1.00 1.00
trr
0.90 0.90
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"— 0.80 0.80
tar 0.70 0.70
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0.50 ' 0.50
'ter
0.40 0.40
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0.20 0.20
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0.00 , - — - 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
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Hyd No.2 Time(hrs)
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MEADE BUILDERS OFFICE BUILDING
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VW Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/1312017
Hyd. No. 2
Pre-Development Overall Drainage Area A
Hydrograph type = SCS Runoff Peak discharge = 1.211 cfs
Storm frequency = 10 yrs Time to peak = 11.97 hrs
Time interval = 2 min Hyd.volume = 2,438 cuft
,,e„ Drainage area = 0.282 ac Curve number = 71
Basin Slope = 0.0% Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
.r Total precip. = 5.55 in Distribution = Type II
- Storm duration = 24 hrs Shape factor = 484
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r, Pre Development A
Q( s) Hyd.No.2-10 Year Q(cfs)
2.00 2.00
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1.00 1.00
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0.00 - • - . " 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
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Hyd No.2 Time(hrs)
SW
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Hydrograph Report 1
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for Hydraflow Hydrographs Extension for AutoCAD@ Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 3
Pre-Development Overall Drainage Area B
Hydrograph type = SCS Runoff Peak discharge = 1.027 cfs
+r. Storm frequency = 2 yrs Time to peak = 11.97 hrs
Time interval = 2 min Hyd.volume = 2,054 cuft
Drainage area = 0.442 ac Curve number = 74
Basin Slope = 0.0% Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
++� Total precip. = 3.68 in Distribution = Type II
„rr, Storm duration = 24 hrs Shape factor = 484
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+11r Pre Development B
Q(cfs) Hyd.No.3—2 Yeariso
Q(cfs)
2.00 2.00
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qrr
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1.00 1.00
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0 2 4 6 8 10 12 14 16 18 20 22 24 26
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Time(hrs)
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Hyd No.3
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Hydrograph Report
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"' Hyd. No. 3
Pre-Development Overall Drainage Area B
ler
Hydrograph type = SCS Runoff Peak discharge = 2.092 cfs
yr Storm frequency = 10 yrs Time to peak = 11.93 hrs
gip Time interval = 2 min Hyd.volume = 4,227 cuft
mo Drainage area = 0.442 ac Curve number = 74
Basin Slope = 0.0% Hydraulic length = 0 ft
— Tc method = User Time of conc. (Tc) = 5.00 min
rr►' Total precip. = 5.55 in Distribution = Type II
1„ Storm duration = 24 hrs Shape factor = 484
vrr
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„a, Pre Development B
Q(cfs) Hyd.No.3—10 Year Q(cfs)
3.00 3.00
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kW
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2.00 2.00
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1.00 . 1.00
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0.00 — — 0.00
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Hyd No.3 Time(hrs)
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Hydraflow Hydrographs Extension for AutoCAD®Civil 30®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 4
Pre Development C
vir
Hydrograph type = SCS Runoff Peak discharge = 0.141 cfs
Iry Storm frequency = 2 yrs Time to peak = 11.97 hrs
vr► Time interval = 2 min Hyd.volume = 401 cuft
vier Drainage area = 0.289 ac Curve number = 55
Basin Slope = 0.0 % Hydraulic length = 0 ft
111V Tc method = User Time of conc. (Tc) = 5.00 min
+r► Total precip. = 3.68 in Distribution = Type II
v„r Storm duration = 24 hrs Shape factor = 484
yr
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Pre Development C-Forest
gir
Q(cfs) Hyd.No.4—2 Year Q(cfs)
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0.50 0.50
rr► 0.45 0.45
+Ir
- 0.40 0.40
war
tor 0.35 0.35
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0.30 - 0.30
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0.25 0.25
yr
0.20 0.20
0.15 0.15
tor
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vrr
IMF 0.05 0.05
yr
0.00 - -- — — 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
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Time(hrs)
yr
Hyd No.4
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Hyd. No. 4
Pre Development C
Hydrograph type = SCS Runoff Peak discharge = 0.600 cfs
rr Storm frequency = 10 yrs Time to peak = 11.97 hrs
ler Time interval = 2 min Hyd.volume = 1,245 cuft
Drainage area = 0.289 ac Curve number = 55
Basin Slope = 0.0% Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
IIV Total precip. = 5.55 in Distribution = Type II
,r, Storm duration = 24 hrs Shape factor = 484
vr►
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„W Pre Development C-Forest
Q(cfs) Hyd.No.4—10 Year Q(cfs)
rr►
1.00 1.00
vr►
ye, 0.90 0.90
'rr 0.80 0.80
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for 0.70 0.70
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0.60 0.60
0.50 0.50
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0.40 0.40
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0.30 0.30
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irr 0.00 - - ` 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
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Hyd No.4 Time(hrs)
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Hydrograph Report
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Hyd. No. 11
Total Pre
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Hydrograph type = Combine Peak discharge = 1.733 cfs
1111, Storm frequency = 2 yrs Time to peak = 11.97 hrs
Time interval = 2 min Hyd. volume = 3,588 cuft
grr Inflow hyds. = 2, 3, 4 Contrib.drain.area = 1.013 ac
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1111
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2.00 2.00
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0 2 4 6 8 10 12 14 16 18 20 22 24 26
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111111 Hyd No. 11 Hyd No.2 Hyd No.3 Hyd No.4
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low Hyd. No. 11
rr Total Pre
.r
Hydrograph type = Combine Peak discharge = 3.893 cfs
y"` Storm frequency = 10 yrs Time to peak = 11.97 hrs
�► Time interval = 2 min Hyd. volume = 7,911 cuft
4111,, Inflow hyds. = 2, 3,4 Contrib.drain.area = 1.013 ac
yip
.rr
+rir
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Total Pre
IP
0(cfs) Hyd.No.11 --10 Year 0(cfs)
4.00 4.00
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1110, 0 2 4 6 8 10 12 14 16 18 20 22 24 26
Iry Time(hrs)
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Hyd No.11 Hyd No.2 Hyd No.3 Hyd No.4
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MEADE BUILDERS OFFICE BUILDING
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Hydrograph Report
Hydrafow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 5
Post Dev A-undetained 1
.r
Hydrograph type = SCS Runoff Peak discharge = 0.372 cfs
Storm frequency = 2 yrs Time to peak = 11.97 hrs
+or Time interval = 2 min Hyd.volume = 747 cuft
Drainage area = 0.186 ac Curve number = 71
Basin Slope = 0.0% Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 3.68 in Distribution = Type II
VW Storm duration = 24 hrs Shape factor = 484
VW
VW
+,r
r" Q(cfs) Post Dev A-undetained 1 c2(cfs)
Hyd.No.5--2 Year
oier
0.50 - 0.50
rrr
0.45 • 0.45
'ir 0.40 0.40
tr
ter 0.35 0.35
r 0.30 • 0.30
iwy
0.25 0.25
•
0.20 0.20
mor
mw 0.15 0.15
+rr
yr 0.10 0.10
rr
r, 0.05 0.05
mw
0.00 - - - 0.00
mor0 2 4 6 8 10 12 14 16 18 20 22 24 26
r
Time(hrs)
mor
No.5
rr
it
rr
+�r
mor
„r, 17
it
rr
MEADE BUILDERS OFFICE BUILDING
IW
11100
.. 2
I.
Hydrograph Report
Ir Hydraflow Hydrographs Extension for AutoCAD®CMI 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/1 3 1 2017
Hyd. No. 5
.. Post Dev A-undetained 1
.rr
Hydrograph type = SCS Runoff Peak discharge = 0.799 cfs
rr' Storm frequency = 10 yrs Time to peak = 11.97 hrs
tar Time interval = 2 min Hyd.volume = 1,608 cult
Drainage area = 0.186 ac Curve number = 71
Basin Slope = 0.0% Hydraulic length = 0 ft
yr Tc method = User Time of conc. (Tc) = 5.00 min
�r Total precip. = 5.55 in Distribution = Type II
,ei,, Storm duration = 24 hrs Shape factor = 484
1rr
rr
r, Post Dev A-undetained 1
Q(cfs) Hyd.No.5—10 Year Q(cfs)
+r
1.00 1.00
VW
wiP
0.90 0.90
rer
r' 0.80 0.80
�Irr
err 0.70 0.70
VW
—. 0.60 0.60
reo
0.50 0.50
-
0.40 0.40
1
0.30 0.30
rM 0.20 0.20
+rr
0.10 0.10
+rtrr
0.00 • — - - - — 0.00
1110 0 2 4 6 8 10 12 14 16 18 20 22 24 26
vrr
Hyd No.5 Time(hrs)
11.
VW
ry
VW
VW
,ter 18
r.
trr
MEADE BUILDERS OFFICE BUILDING
1111/
`r Hydrograph Report 2
+a►' Hydraflow Hydrograpbs Extension for AuIoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 6
r. Post Dev A-undetained 2
ar
Hydrograph type = SCS Runoff Peak discharge = 0.058 cfs
.r Storm frequency = 2 yrs Time to peak = 11.97 hrs
+r Time interval = 2 min Hyd.volume = 127 cuft
Drainage area = 0.057 ac Curve number = 61
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 3.68 in Distribution = Type II
,rr Storm duration = 24 hrs Shape factor = 484
tr
+r►
+„ Post Dev A-undetained 2
Q(cfs) Hyd.No.6—2 Year Q(cfs)
tar
0.10 0.10
ryr
+w► 0.09 0.09
vrr
0.08 0.08
t1r
yor 0.07 0.07
Ye!
0.06 0.06
tior
titin
tin
0.05 0.05
0.04 0.04
+rr
0.03 0.03
0.020.02
ar
0.01 � 0.01
0.00 — - -� - 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
gran
grin
Hyd No.6 Time(hrs)
+rr
rrr
rr
+r►
19
rr
ter
.r
■r
wr
MEADE BUILDERS OFFICE BUILDING
1.110
1110,
3
Hydrograph Report
VIP
.IP Hydraflow Hydrographs Extension for AutoCAD€Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/1312017
IV Hyd. No. 6
VP Post Dev A-undetained 2
rr
Hydrograph type = SCS Runoff Peak discharge = 0.165 cfs
imp Storm frequency = 10 yrs Time to peak = 11.97 hrs
Time interval = 2 min Hyd.volume = 332 cuft
,- Drainage area = 0.057 ac Curve number = 61
Basin Slope = 0.0 % Hydraulic length = 0 ft
'ir Tc method = User Time of conc. (Tc) = 5.00 min
yor Total precip. = 5.55 in Distribution = Type II
ler Storm duration = 24 hrs Shape factor = 484
.r
VW
yr
.r
Post Dev A-undetained 2
Q(cfs) Q(cfs)
Hyd.No.6—10 Year
goo
0.50 0.50
.r
0.45 0.45
mi r
weir 0.40 0.40
lir
0.35 0.35
0.30 0.30
IP
+rr
0.25 0.25
+r
0.20 0.20
.r
0.15 0.15
low
nr 0.10 0.10
.r
0.05 0.05
.r
0.00 - - - J - 0.00
VP 0 2 4 6 8 10 12 14 16 18 20 22 24 26
low
+1r
Hyd No.6 Time(hrs)
rr
Iry
rr
20
yr
+r
+,n
MEADE BUILDERS OFFICE BUILDING
IMF
1
Hydrograph Report
+fir Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 8
IMP Post Dev C
Hydrograph type = SCS Runoff Peak discharge = 0.141 cfs
Storm frequency = 2 yrs Time to peak = 11.97 hrs
1111, Time interval = 2 min Hyd.volume = 401 cult
r Drainage area = 0.289 ac Curve number = 55
Basin Slope = 0.0% Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 3.68 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
r
yr
rr
yr
INV Post Dev C-Forest
Q(cfs) Hyd.No.8-2 Year Q(cfs)
r
0.50 0.50
rr
0.45 0.45
0.40 0.40
yr
0.35 0.35
rr
r, 0.30 0.30
+rr
0.25 0.25
r
0.20 0.20
r
tor 0.15 0.15
+r►
V. 0.10 0.10
yr
0.05 0,05
rrr
rr 0.00 - — - 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
r
Hyd No.8 Time(hrs)
+r+r
r
r►
r
yr
- 21
r
ter
1r►
MEADE BUILDERS OFFICE BUILDING
r
r
tier2
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 8
Post Dev C
+tr
Hydrograph type = SCS Runoff Peak discharge = 0.600 cfs
'r Storm frequency = 10 yrs Time to peak = 11.97 hrs
• Time interval = 2 min Hyd.volume = 1,245 cuft
— Drainage area = 0.289 ac Curve number = 55
Basin Slope = 0.0 % Hydraulic length = 0 ft
vi•or Tc method = User Time of conc. (Tc) = 5.00 min
ger Total precip. = 5.55 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
+rr
41111r
Post Dev C-Forest
Q(cfs) Hyd.No.8-10 Year Q(cfs)
ler
1.00 - 1.00
nr
110, 0.90 • 0.90
vllr
0.80 0.80
0.70 0.70
vier
0.60 - 0.60
ger
ter
0.50 0.50
ter
err
0.40 0.40
0.30 0.30
�► 0.20 • 0.20
+err /\*****""
0.10 0.10
0.00 - - - 0.00
ler0 2 4 6 8 10 12 14 16 18 20 22 24 26
v�rr
--- Hyd No.8 Time(hrs)
r
4110
VIr
tair 22
ler
yr
41.
w
+tr
qa, MEADE BUILDERS OFFICE BUILDING
qtr
Hydrograph Report 1
lor
rtr Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 7
+rr Post Dev-Detained
+r
Hydrograph type = SCS Runoff Peak discharge = 2.249 cfs
rr Storm frequency = 2 yrs Time to peak = 11.93 hrs
Time interval = 2 min Hyd.volume = 4,919 cult
Drainage area = 0.480 ac Curve number = 94
Basin Slope = 0.0% Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 3.68 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
wr
.r
.r
Post Dev-Detained
Q(cfs) Hyd.No.7--2 Year Q(cfs)
+trrr
3.00 3.00
IMP
rrr
+r
2.00 2.00
+1r
ttr
mor
lir
1.00 1.00
+rr
qw
+1r
rir
yr
rtr
0.00 — 0.00
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
yr
---- Hyd No.7 Time(hrs)
�Ir
+tr
1W
lw
gar
23
qtr
tor
or
MEADE BUILDERS OFFICE BUILDING
2
Hydrograph Report
-r Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
i Hyd. No. 7
ger Post Dev-Detained
yr
Hydrograph type = SCS Runoff Peak discharge = 3.513 cfs
Storm frequency = 10 yrs Time to peak = 11.93 hrs
Time interval = 2 min Hyd. volume = 7,925 cuft
✓ Drainage area = 0.480 ac Curve number = 94
Basin Slope = 0.0 % Hydraulic length = 0 ft
— Tc method = User Time of conc. (Tc) = 5.00 min
+r Total precip. = 5.55 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
ar
yr
Post Dev-Detained
"' Q(cfs) Q(cfs)
Hyd.No.7—10 Year
yr
4.00 4.00
+Ir
lir
rr
++lr
ar 3.00 3.00
ver
rlr
2.00 2.00
r,r
w
lor
1.00 1.00
VW
rrr
0.00 - 0.00
✓ 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
+rr
Hyd No.7 Time(hrs)
+ur
Imo
rtr
war
24
..r
MEADE BUILDERS OFFICE BUILDING
1
`" Hydrograph Report
+ISI Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Friday,09/15/2017
•' Hyd. No. 9
e rr Detention System Report( Hyd.#7 to Detention System )
yr
Hydrograph type = Reservoir Peak discharge = 0.729 cfs
"'r Storm frequency = 2 yrs Time to peak = 724 min
Time interval = 2 min Hyd.volume = 4,918 cuft
Inflow hyd. No. = 7-Post Dev- Detained Max. Elevation = 368.81 ft
yor
Reservoir name = 361N Storage Max. Storage = 1,878 cuft
nr
Storage Indication method used.
ler
<no description>
Q(cfs) Hyd.No.9—2 Year Q(cfs)
+irr
3.00 - 3.00
VW
VW
VW
rr►
IOW
2.00 2.00
to r
yr
VW
ler
+rr
1.00 1.00
11,
+err
ler
7r
11,
ler
0.00 - 0.00
VW 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time(min)
Hyd No.9 Hyd No.7 Total storage used=1,878 cuft
+r
�r
+lir
oirr
25
,1111,
111110
r
ler
MEADE BUILDERS OFFICE BUILDING
yaw
mer
ter
Pond Report 2
NW Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Friday,09/15/2017
`or Pond No.1- 36IN Storage
*IV Pond Data
,- UG Chambers-Invert elev.=366.10 ft. Rise x Span=3.00 x 3.00 ft, Barrel Len=86.00 ft, No.Barrels=4, Slope=1.20%, Headers=No
AV Stage/Storage Table
411MStage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cult) Total storage(cult)
0.00 366.10 n/a 0 0
SW
0.40 366.50 n/a 33 33
0.81 366.91 n/a 136 168
1.21 367.31 n/a 278 4.47
1.61 367.71 n/a 367 814
2.02 368.12 n/a 402 1,216
2.42 368.52 n/a 402 1,618
1111/
2.82 368.92 nla 367 1,986
3.23 369.33 n/a 278 2,264
IV
3.63 369.73 n/a 136 2,400
4.03 370.13 n/a 32 2,432
IV
•rr Culvert I Orifice Structures Weir Structures
ver [A] [B] [C] [PrfRsr] [A] [Bl [C] [D]
ger Rise(In) = 15.00 2.00 6.00 Inactive Crest Len(ft) = 4.00 0.00 0.00 0.00
Span(in) = 15.00 2.00 12.00 0.00 Crest El.(ft) = 370.00 0.00 0.00 0.00
ler No.Barrels = 1 1 1 0 Weir Coeff. = 3.33 3.33 3.33 3.33
VI Invert El.(ft) = 366.10 366.10 368.50 0.00 Weir Type = 1 -- - --
Length(ft) = 21.00 0.67 0.67 0.00 Multi-Stage = Yes No No No
'w" Slope(%) = 1.00 0.00 0.00 n/a
N-Value = .013 .013 .013 n/a
Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(In/hr) = 0.000(by Contour)
•t1► Multi-Stage = n/a Yes Yes No 1W Elev.(ft) = 0.00
1t/ Note.Culveri/Orifice outflows are analyzed under inlet licl and outlet(oc)control.weir risers decked for orifice cor ditians lig)and submergence(s).
OW
11r
Stage(ft) Stage/Discharge Elev(ft)
11r
5.00 371.10
1r
1115,
• 4,00 370.10
VW
SW
IOW3.00 369.10
Ir
1610
2.00 368.10
tali
iW
err 1.00 1 367.10
Mr
tar
0.00 366.10
1r 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
ill. Total Q Discharge(cis)
ter'
1a►
11,
ler
26
mw
gir
1r
wr
MEADE BUILDERS OFFICE BUILDING
.r
„r 3
Hydrograph Report
.r
vs, Hydraflow Hydrographs Extension for AutoCAD®CMI 3D®2014 by Autodesk,Inc.v10.3 Friday,09/15/2017
"' Hyd. No. 9
Detention System Report( Hyd.#7 to Detention System)
rr
Hydrograph type = Reservoir Peak discharge = 2.539 cfs
Storm frequency = 10 yrs Time to peak = 720 min
tor Time interval = 2 min Hyd.volume = 7,923 cuft
ger Inflow hyd. No. = 7-Post Dev- Detained Max. Elevation = 369.74 ft
Reservoir name = 36IN Storage Max. Storage = 2,395 cuft
+oar
+a/ Storage Indication method used.
Var
kikr
rar
r
<no description>
Q(cfs) Q(cfs)
Hyd.No.9—10 Year
+tar
4.00 4.00
gr
•
tor
rar
IMF 3.00 3.00
lir
+r
ler
2.00 2.00
rar
+tar
wr
1111/
`r 1.00 1.00
r
gar
low
w
0.00 — — 0.00
+a1/ 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time(min)
var
Hyd No.9 Hyd No.7 i- Total storage used=2,395 cult
+Ir
+a1/
IOW
aW
27
41110
INV
yr
yr
MEADE BUILDERS OFFICE BUILDING
vir
vir
Hydrograph Report
vsr Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk.Inc.v10.3 Wednesday,09113/2017
vir Hyd. No. 12
`llr Total Post
it
Hydrograph type = Combine Peak discharge = 1.022 cfs
Iry Storm frequency = 2 yrs Time to peak = 12.03 hrs
vn Time interval = 2 min Hyd.volume = 6,193 cuft
Inflow hyds. = 5, 6, 8,9 Contrib.drain.area = 0.532 ac
�lr
tar
vrr
�lr
nr
Total Post
Q(cfs) Hyd.No.12—2 Year Q(cfs)
2.00 2.00
4411,
+rr
w
+rr►
�lr
1110,
1.00 1.00
vrr
rrr
yr
rr
ver
INV
�lr
+lr
rrr 0.00 - - 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Time(hrs)
Hyd No.12 Hyd No.5 Hyd No.6 Hyd No.8
mm Hyd No.9
yr
+rr
yr
�1r+
28
Yar
v✓
err
yr
MEADE BUILDERS OFFICE BUILDING
rr
Iry 2
Hydrograph Report
kev
it Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
"'r Hyd. No. 12
4•► Total Post
Hydrograph type = Combine Peak discharge = 3.824 cfs
Storm frequency = 10 yrs Time to peak = 12.00 hrs
Time interval = 2 min Hyd.volume = 11,109 cuft Inflow hyds. = 5, 6,8,9 Contrib.drain.area = 0.532 ac
rr
rr
+r
wr
VW
wr
Total Post
Q(cfs) Hyd.No. 12--10 Year Q(cfs)
4.00 4.00
rr
mo,
yr
3.00 3.00
+rr
+1r
IW
ter
2.00 2.00
VW
vrr
1410
IW
"rr 1.00 1.00
ary
yr -
0.00 — - 0.00
V. 0 2 4 6 8 10 12 14 16 18 20 22 24 26
`r Time(hrs)
--- Hyd No. 12 Hyd No.5 Hyd No.6 Hyd No.8
Hyd No.9
mw
+r
vow
r
110,
rr
29
gar
vrr
rr
1„r
111, MEADE BUILDERS OFFICE BUILDING
1111+
,r,
Hydrograph Report
41110 Hydraflow Hydrographs Extension for AutoCAD®CMI 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13 12017
• Hyd. No. 16
rlr EB Total Pre Dev
Hydrograph type = SCS Runoff Peak discharge = 1.059 cfs
Storm frequency = 1 yrs Time to peak = 11.97 hrs
+•► Time interval = 2 min Hyd.volume = 2,225 cuft
mor Drainage area = 1.010 ac Curve number = 68
Basin Slope = 0.0% Hydraulic length = 0 ft
``"' Tc method = User Time of conc. (Tc) = 5.00 min
+•r Total precip. = 3.04 in Distribution = Type II
I, Storm duration = 24 hrs Shape factor = 484
rr
Iry
+rr
�Ir
111/ EB Total Pre Dev
Q(cfs) Q(cfs)
Hyd.No. 16—1 Year
2.00 2.00
ler
+r,r
IIP
+Ir
rr►
IOW
rr
1.00 1.00
IMO
4111,
trr
r
IOW
11, 0.00 — - 'A ` --- 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
11. Hyd No. 16 Time(hrs)
'r►
IW
rr
Ir
30
vIr
vow
MEADE BUILDERS OFFICE BUILDING
11110,
,ter
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
"ay Hyd. No. 14
tir
PostDev EB undetaind
tor
Hydrograph type = SCS Runoff Peak discharge = 0.265 cfs
+rr Storm frequency = 1 yrs Time to peak = 11.97 hrs
`► Time interval = 2 min Hyd.volume = 687 cuft
Drainage area = 0.531 ac Curve number = 61
Basin Slope = 0.0% Hydraulic length = 0 ft
"r Tc method = User Time of conc. (Tc) = 5.00 min
r Total precip. = 3.04 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
rr
yr
rr
ir PostDev EB undetaind
ft
Q(cfs) Hyd.No.14—1 Year Q(cfs)
Ir
0.50 0.50
l
0.45 0.45
• 0.40 0.40
ivy
rr 0.35 0.35
err
0.30 0.30
4111,
+1111,
0.25 0.25
0.20 0.20
41W
4111, 0.15 0.15
mar 0.10 0.10
1111
0.05 0.05
+1,n
0.00 — — - 0.00
"P 0 2 4 6 8 10 12 14 16 18 20 22 24 26
Hyd No. 14 Time(hrs)
tor
etr
v1,+
31
rr►
MEADE BUILDERS OFFICE BUILDING
41/
Hydrograph Report 1
Hydraflow Hydrographs Extension for AutoCAD®Civil 30®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 15
41/
Post Dev EB Detained
.r
r Hydrograph type = SCS Runoff Peak discharge = 1.818 cfs
Storm frequency = 1 yrs Time to peak = 11.93 hrs
'- Time interval = 2 min Hyd.volume = 3,918 cuft
�r Drainage area = 0.482 ac Curve number = 94
Basin Slope = 0.0% Hydraulic length = 0 ft
111/
Tc method = User Time of conc. (Tc) = 5.00 min
"ar Total precip. = 3.04 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
m.
Ir
+ir
+rr
Ir Post Dev EB Detained
Q(cfs) Hyd.No. 15—1 Year Q(cfs)
2.00 2.00
vrr
Vir
+.r
�Ir
rr
+rr
1.00 1.00
+rr
vlr
yr
ti,
vr+
�r+
0.00 - 0.00
lay
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
r
Hyd No. 15 Time(hrs)
r
ar
.r
ver
nv
., 32
r
w
+.r
,r
MEADE BUILDERS OFFICE BUILDING
•
401
140
410
Hydrograph Report
vir Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
Hyd. No. 17
Combined Post Dev EB
Hydrograph type = Combine Peak discharge = 2.027 cfs
Storm frequency = 1 yrs Time to peak = 11.93 hrs
ler Time interval = 2 min Hyd.volume = 4,606 cuft
IF Inflow hyds. = 14, 15 Contrib.drain.area = 1.013 ac
lar
rrr
1110
+r
INV
1111,
Combined Post Dev EB
IF Q(cfs) Q(cfs)
Hyd.No.17—1 Year
ovar
3.00 3.00
IF
IF
2.00 2.00
yaw
oor
rrr
tar
rr
1.00 1.00
yr
1414
err
41111
0.00 — 0.00
440 0 2 4 6 8 10 12 14 16 18 20 22 24 26
gar Time(hrs)
•
—�- Hyd No. 17 Hyd No. 14 Hyd No. 15
lir
410
4411
11411
wr
rrr
33
.r
ter
11, MEADE BUILDERS OFFICE BUILDING
mi► 1
Hydrograph Report
+tilt Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Friday,09/15/2017
gay Hyd. No. 18
rrr Energy balance Detention system report(Hyd#15)
it
Hydrograph type = Reservoir Peak discharge = 0.175 cfs
Storm frequency = 1 yrs Time to peak = 742 min
+�► Time interval = 2 min Hyd. volume = 3,917 cuft
Inflow hyd. No. = 15-Post Dev EB Detained Max. Elevation = 368.53 ft
Reservoir name = 361N Storage Max. Storage = 1,627 cuft
rr
Storage Indication method used.
rI
+rlr
,rr Detention system
Q(cfs) Q(cfs)
Hyd.No.18—1 Year
titar
2.00 2.00
VW
VW
VW
VW
VW
VW
VW
ter►
1.00 1.00
ilr
trr
VW
rr
mot
vow
low
vir
rrr
0.00 — 0.00
rrr 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
INV Time(min)
--- Hyd No. 18 Hyd No. 15 Total storage used=1,627 cuft
111
VII
rrr
1111.
vrar
rir
vrr
r, 34
Iir
vro
mar
MEADE BUILDERS OFFICE BUILDING
r.
r
Pond Report 2
ger
Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2014 by Autodesk,Inc.v10.3 Friday,09/15/2017
sr Pond No.1- 36IN Storage
`r Pond Data
,W UG Chambers-Invert elev.=366.10 ft, Rise x Span=3.00 x 3.00 ft, Barrel Len=86.00 ft, No.Barrels=4, Slope=1.20%, Headers=No
'+r Stage I Storage Table
VW Stage(It) Elevation(ft) Contour area(soft) Incr.Storage(cuft) Total storage(cuft)
0.00 366.10 n/a 0 0
AW
0.40 366.50 n/a 33 33
0.81 366.91 n/a 136 168
OW
1.21 367.31 n/a 278 447
1.61 367.71 rda 367 814
11,
2.02 368.12 n/a 402 1,216
1r 2.42 368.52 rda 402 1,618
2.82 368.92 n/a 367 1,986
3.23 369.33 n/a 278 2,264
411100
3.63 369.73 n/a 136 2,400
4.03 370.13 n/a 32 2,432
Villr
VW Culvert I Orifice Structures Weir Structures
'w [A] [B] [C] [PrtRsr] [A] [B] [C] [D]
1r Rise(in) = 15.00 2.00 6.00 Inactive Crest Len(ft) = 4.00 0.00 0.00 0.00
Span(In) = 15.00 2.00 12.00 0.00 Crest El.(ft) = 370.00 0.00 0.00 0.00
rrl► No.Barrels = 1 1 1 0 WeirCoeff. = 3.33 3.33 3.33 3.33
+w Invert El.(ft) = 366.10 366.10 368.50 0.00 Weir Type = 1 -- -- --
Length(ft) = 21.00 0.67 0.67 0.00 Multi-Stage = Yes No No No
11r►, Slope(%) = 1.00 0.00 0.00 n/a
4WN-Value = .013 .013 .013 n/a
Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000(by Contour)
+- Multi-Stage = n/a Yes Yes No TW Elev.(ft) = 0.00
4111/ Note'CuIven/Onfice outflows are analyzed under mist tial and outlet loc)conirol.Weir risers checked for orifice conditions lie)and submergence(s).
ter
vilW
Stage(ft) Stage I Discharge Elev(ft)
VW
5.00 371.10
rr
>r
V' 4.00 370.10
111
4111,
IMO3.00 369.10
+rr
lir
2.00 368.10
1111►
III
441W 1.00 367.10
ler
•
0.00 366.10
INV 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
el/ Total Q Discharge(cfs)
1•
er
41110,
ver
Mir
,.r 35
+a/
.1
yr
yr
MEADE BUILDERS OFFICE BUILDING
11,
go` Hydrograph Report
ilr Hydraflow Hydrographs Extension for AutoCAD®Civil 30®2014 by Autodesk,Inc.v10.3 Wednesday,09/13/2017
too Hyd. No. 20
rr+ Post Dev Combined Energy
rr
Hydrograph type = Combine Peak discharge = 0.408 cfs
Storm frequency = 1 yrs Time to peak = 11.97 hrs
Time interval = 2 min Hyd.volume = 4,604 cuft
Inflow hyds. = 14, 18 Contrib.drain.area = 0.531 ac
+rr
'1r
ler
yr
ur
111110
ley Q(cfs) Post Dev Combined Energy
Hyd.No.20-1 Yearvair
0(cfs)
0.50
mor 0.50
w
0.45 0.45
v1r
'M 0.40
0.40
yr
yr 0.35 0.35
Iter
„rr 0.30 0.30
+11I
0.25
0.25
yr
0.20
gar 0.20
16. 0.15
0.15
yr
0.10 0.10
rr
11r 0.05
0.05
+wr
0.00 - - — - - 0.00
meir0 2 4 6 8 10 12 14 16 18 20 22 24 26
41r
Time(hrs)
Hyd No.20 Hyd No.14 Hyd No. 18
vire
taw
yr
yr
vlr
yr
.,r 36