HomeMy WebLinkAboutTract 18209J.N.: 0208 C 589
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LAMDA ENGINEERING AND DEVELOPMENT
28364 Vincent Moraga Drive, Suite "J", Temecula CA 92590
(951) 676-7688, (951) 676-7288 fax
lamdadev (q--� yahoo.com
LAMDADEV.COM
PROJECT: Site Hydrology Hydraulic Report
TM 18209
LOCATION: Athol St at Juniper Ave, Fontana
OWNER: Mr. Eladio Cruz
REVISIONS:
DESIGNED BY:
o '�-OR A
0 1
No. C-049311
2 M
:X
P)9-39- rr'
m � d1l
Preliminary Hydrology and Hydraulic Study
For TM 18209
N/W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 July 17, 2008
INTRODUCTION:
This office has been retained by Mr. Eladio Cruz to
prepare a Hydrology and Hydraulic Report to determine
the site' s tributary flows to the referenced property
and to size the on site culverts to handle said flows
as they traverse the site.
EXISTING CONDITION of the DRAINAGE BASIN:
The drainage basin studied is approximately 1.05 acres,
there isn' t any off site flows that come into the
subject property, any off site flows by pass the site
via an existing box culvert to the west on a 7' storm
drain easement and to the east off site flows stay on
Juniper Ave., the soils classification of the basin is
A, according to the San Bernardino County Hydrology
Map, the land is f lat and drains to the west on Athol
Street.
In general the area is residential.
PROPOSED CONDITION:
The development consists of the construction of 6 new
single family residences, this project includes the
construction of driveways and walkways, as well as
landscaped areas this will require the grading of
slopes and swales to direct the drainage flows away
from the new buildings, the development grading plans
were prepared by this office.
All flows will be directed via earthen swales as flows
traverse each one of the lots and then flows will spill
over to the street, where flows have gone historically.
No alteration of existing flow patterns is proposed,
per the development plans. No substantial negative
impact by on-site flows unto adjacent down stream
properties is expected due to this development.
Page 1
Preliminary Hydrology and Hydraulic Study
For TM 18209
N/W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 July 17, 2008
Note that all existing off -Site flows are not combined
with any on site flows.
it should be the responsibility of the upstream
developers to design systems that will minimize the
drainage impacts onto this property, flows upstream
should be clean and should be treated for water
pollutants upstream by upstream land owners.
HYDROLOGY:
Using the County of San Bernardino Hydrology Manual,
and implementing the Rational Method Hydrology for
drainage areas smaller than 640 acres, this office has
developed calculations to determine the existing run-
off. All charts and tables used are attached for
review hereon on Appendix A.
HYDRAULIC ANALISYS:
With the calculated 25 year frequency flows we have
checked the depth of flood on the street, and it has
been determined to be adequate, the computer
calculations and charts used to verify storm flow
velocities and depths of flow are shown attached for
review on Appendix B.
Thank you for the opportunity to be of service, if you have any questions or
comments regarding this matter please do not hesitate to contact this office at
your earliest convenience. .pp, ��qR 0 F S ��q , ��
Sinc"eel 4
No.
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>ec o r ara, P. E. C-04931,
Principal 9`30-20
Page 2 IL
Preliminary Hydrology and Hydraulic Study
For TM 18209
Aw� N/W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 March 17, 2008
Appendix "A"
Hydrology
Study
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Preliminary Hydrology and Hydraulic Study
For TM 18209
N1W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 March 17, 2008
----Wm
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[ALCi1j;im-
Preliminary Hydrology and Hydraulic Study
For TM 18209
N/W Cor of Athol St. at Juniper Ave. Fontana
job No. : 0208 C 589 March 17, 2008
Preliminary Hydrology and Hydraulic Study
For TM 18209
N/W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 March 17, 2008
TAUX Q2. ft
r=TYMCAt=
ApW a
C
D
f4AJrURAJA 1.0 0.41
0.27
0-12
0.14
DErms 1.0 0.39
R.w CCOPS (Poo
0.41
4
aj
0.29
0.40
0-n
0.31
Gma (120 I.g O.0
(ilk) 1.0 O.0
0.62 '
0-43
0-34
Wood1wd (ink) 1.0 a."
0.69
0.50
0.40
URDAIft D.1a
It.1dorfig (I DUIAO 0.30
0.60
0.43
0.37
Resbcopado Cz DUIAO 0." 0.6Z
,
0.�3
o.o
0.39
0.311
0.32
0.28
R,,Wanda (4 DUIAC) 0.60 -0.33
i��
O.W
0.22
0.13
Radd*NW (10 DWIXC) 0.40
0.35 0.34
0.26
0.20
0-16
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0.14
0.12
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Preliminary Hydrology and Hydraulic Study
For TM 18209
N/W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 March 17, 2008 --WO
L
N
4100
LOrTATIONS,
1_ UO&I" wook - MO FOO
IMMU-s-
(0 L. 014 N-&dV-UW*
OffdOPWAO, Tc -12A WAL
(a) Le "do No sd� & CNN
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TIME Of- CONCI
SM BERNMUM COLM" NOU00"
HyDROLDGY MANUAL FOR W"AL
N
TC
I
N
141ERMAKE
Rational Method Hydrology
Tc: time of concentration from Fig. D-1 in minutes
County of San BernarcHno
1: Intancity
from wencity Duration curve
Job file:
0208 c 599
Fm: max loss rate from table C-2
Job Address
TM 18209 n1w cor Athol at Juniper Avenue city of Fontana
Soils Type:
per plan
Date: 2125008
Storm Frequency:
IOYR
Development cond:
DEVELOP
C
Q Q
ff2d2 Arm
Areas
Deslan,
In
TC
Fro
I-Frn
0.§=A &W
I
soils type A
A-1
0.18
7.5
3.20
0.58
2.62
0.43
2
0.18
0.43
soils type A
A-2
0.17
7.5
3.20
0.58
2.62
0.39
3
0.35
0.83
soils type A
A-3
0.17
7.5
3.20
0.58
2.62
0.40
4
0.52
1.22
soils type A
A-4
0.17
7.5
3.20
0.58
2.62
0.39
5
0.69
1.62
soils type A
A-5
0.17
7.5
3.20
0.58
2.62
0.39
a
0.85
2�01
soils type A
A-6
QM
7.5
3.20
0.58
2.62
0.47
T
COG
2.48
Storm Frequency:
MR
Development cond:
DEVELOP
Q Q
N2112 Area
Desion,
In A
Frn
L -Em
O,M MUM
Aran
II
soils type A
A-1
0.18
7.5
4.00
0.58
3.42
0.57
2
0.18
0.57
soils type A
A-2
0.17
7.5
4.00
0.58
3.42
0.51
3
o.35
1.08
soils type A
A-3
0.17
7.5
4.00
0.58
3.42
0.52
4
0.52
1.60
soils type A
A-4
0.17
7.5
4.00
0.58
3.42
0.51
5
0.69
2.11
soils type A
A-5
0.17
7.5
4.00
0.58
3.42
0.51
6
0.85
2.63
soils type A
A-6
7.5
4.00
0.58
3.42
0.61
7
1.05
3.23
Rational Method HYdrologY
. time of concentration from Fig. D-1 in minutes
Tca
county of San Bernardino
I- Interwity from Intencity, Duration curve
Job file:
0208 c 689
Fm: max loss rate from table Cl2
Job Address
TM 18209 nhv cor Athol at juniper Avenue city of Fontana
Solis Type:
per plan
Date:
Storm Frequency:
I OOY-
Development cond:
DEVELO
C
H2d2 Area
Deslan.
In A
TC I EM LEM
O,VC!
Acum
Aron
I
soft type A
A-1
0.18
7.5 5.00 0.58 4.42
0.73
2
0.18
0,73
"is type A
A-2
0,17
7.5 5.00 0.58 4.42
0.86
3
0.35
1 AO
soft type A
A-3
0.17
7.5 5.00 0.56 4.42
0.67
4
0.52
2.06
soft type A
A-4
0.17
7.5 5.00 0.58 4.42
0.66
5
0.69
2.73
soils type A
A-5
0.17
7.5 5.00 0.58 4.42
0.66
6
0.85
3.39
sops type A
A -e
7.5 5.00 0.58 4.42
0.79
7
1.05
4.18
N
N
preliminary Hydrology and Hydraulic Study
For TM 18209
N/W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 March 17, 2008
Appendix "' B "
Hydraulic
analysis
6--Im
N
typical athol cross secUon q 100
Worksheet for Irregular Channel
Project Description
Project File c:XhaestadXacademicXftrw\cruzfont.fm2
Worksheet ex. street cross section Athol Street
Flow Element Irregular Channel
Method Manning's Formula
Solve For Water Elevation
Input Data
Channel Slope
0.004000 fttft
Elevation range: 0.33
ft to 1.24 ft.
Station (ft)
Elevation (ft) Start Station
0.00
1.24 0.00
12.00
1.00
12.00
0.33
13.50
0.45
30.00
0.78
46.50
1.11
Discharge
4.18 cfs
Results
AMP. Wtd. Mannings Coefficient
0.013
Water Surface Elevation
0.71
ft
V*W Flow Area
2.11
ft2
Wetted Perimeter
14.67
ft
Top Width
14.28
ft
Height
0.38
ft
Critical Depth
0.69
ft
Critical Slope
0.004888 ft/ft
Velocity
1.98
ftfs
Velocity Head
0.06
ft
Specific Energy
0.77
ft
Froude Number
0.91
Flow is subcritical.
End Station Roughness
46.50 0.013
typical athol st section q 100
Cross Section for Irregular Channel
Project Description
Project File
c:\haestad\academickfmw\cruzfont.ftn2
Worksheet
ex. street cross section Athol Street
Flow Element
Irregular Channel
Method
Manning's Formula
Solve For
Water Elevation
Section Data
Altd. Mannings Coefficient 0.013
Channel Slope 0.004000 ItIft
Water Surface Elevation 0.71 ft
Discharge 4.18 cfs
1.3f I I
0.
9
C
00.
69.
U=
1=
-1=
0.6-
0.5-
0.4-
0.3' 1 1 1 1 1 1
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0
Station (ft)
OMI
�11
0-M
Preliminary Hydrology and Hydraulic Study
For TM 18209
N/W Cor of Athol St. at Juniper Ave. Fontana
Job No. : 0208 C 589 March 17, 2008
Exhibit
Hydrology Map