HomeMy WebLinkAbout9800 Compagnoni Street Drainage StudyBEST WESTERN HOTEL
DRAINAGE STUDY
Site Development includes a Future Restaurant
in the City of Bakersfield
Prepared For:
Nirmal S. Gill
February 15, 2017
Prepared By:
San Joaquin Engineering, Inc.
5309 Bold Ruler Court
Bakersfield, CA 93312
email: bdawson@sjeinc.net
Purpose:1.
a. Design storm drain system to 10 year event.
Approach:2.
a. Analyze surface flows for 5 year storm frequency.
b. Analyze the 10 year 24 hour storm for conveyance design.
c. Develop runoff patterns and corresponding times of concentration utilizing the City's
rational method, Q=CIA. Where "Q" is flow in cubic feet per second, "C" is the runoff
coeficient, "I" is intensity in inches per hour, and "A" is area in acres.
d. To determine intensities the 5-yr and 10-yr curves from the chart "Intensity vs. Duration
Curves" in the storm drain section in the City of Bakersfield Standards.
Assumptions:3.
a. Full development conditions were assumed for the PM 10717 Phases 1 & 2
b. Mannings "n" value of 0.013 applies to storm drain.
c. A 0.9 runoff coefficient was used exclusively.
d. 5 min roof to gutter times were used exclusively.
e. The starting HGL was started assuming half full condition of the existing basin.
Summary:4. The depicted storm drain system will provide adequate collection and disposal of drainage
waters.
Analyze Best Western Hotel site as defined by the study area map to determine 5 year,and 10
year design flows and volumes for a system to serve the hotel and future restaurant.
Utilize City of Bakersfield Standards method to determine design flows.
The following information was assumed to apply to this study:
Purpose
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Re
a
c
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o
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5
Ba
s
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7
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3
6
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#
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7
0
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7
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7
2
3
6
7
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1
3.9
9.
4
0
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7
5
0
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0
1
3
0
.
0
0
1
7
3
0
.
1
2
1
.
0
0
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2
4
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3
6
3
4
2
.
4
3
342.79
3
MH
#
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M
H
#
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2
0
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0
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5
2
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9
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7.
9
0
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6
3
0
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0
1
3
0
.
0
0
2
5
0
0
.
5
2
0
.
5
0
.
1
4
0
.
6
6
3
4
2
.
7
9
3
4
3
.
4
5
2
MH
#
2
M
H
#
1
3
6
5
.
0
14
.
5
4
30
4.
9
3.0
7.
9
0
.
6
3
0
.
0
1
3
0
.
0
0
1
2
6
0
.
4
6
0
.
5
0
.
0
7
0
.
5
3
3
4
3
.
4
5
3
4
3
.
9
8
1
MH
#
1
C
B
#
1
2
7
.
0
8.
1
0
24
3.
1
2.6
6.
3
0
.
5
0
0
.
0
1
3
0
.
0
0
1
2
8
0
.
0
3
1
.
0
0
.
1
0
0
.
1
4
3
4
3
.
9
8
3
4
4
.
1
2
3
4
6
.
7
5
2
.
6
3
OK
HO
T
E
L
S
I
T
E
H
G
L
CB
#
1
M
H
#
5
s
2
6
.
0
5.
5
3
24
3.
1
1.8
6.
3
0
.
5
0
0
.
0
1
3
0
.
0
0
0
6
0
0
.
0
2
1
.
0
0
.
0
5
0
.
0
6
3
4
4
.
1
2
3
4
4
.
1
8
3
4
7
.
5
0
3
.
3
2
OK
MH
#
5
s
M
H
#
4
s
4
0
.
0
3.
5
3
24
3.
1
1.1
6.
3
0
.
5
0
0
.
0
1
3
0
.
0
0
0
2
4
0
.
0
1
1
.
5
0
.
0
3
0
.
0
4
3
4
4
.
1
8
3
4
4
.
2
2
3
4
8
.
2
0
3
.
9
8
OK
5
MH
#
4
s
M
H
#
3
s
1
5
8
.
0
3.
2
9
24
3.
1
1.0
6.
3
0
.
5
0
0
.
0
1
3
0
.
0
0
0
2
1
0
.
0
3
1
.
5
0
.
0
3
0
.
0
6
3
4
4
.
2
2
3
4
4
.
2
8
3
4
6
.
0
5
1
.
7
7
OK
MH
#
3
s
I
n
l
e
t
"
c
"
3
1
.
0
1.
5
9
15
1.
2
1.3
3.
9
0
.
3
1
0
.
0
1
3
0
.
0
0
0
6
1
0
.
0
2
1
.
5
0
.
0
4
0
.
0
6
3
4
4
.
2
8
3
4
4
.
3
4
3
4
5
.
0
9
0
.
7
5
OK
4
MH
#
3
s
M
H
#
2
s
6
0
.
0
1.
9
4
15
1.
2
1.6
3.
9
0
.
3
1
0
.
0
1
3
0
.
0
0
0
9
0
0
.
0
5
1
.
5
0
.
0
6
0
.
1
1
3
4
4
.
3
4
3
4
4
.
4
5
3
MH
#
2
s
M
H
#
1
s
1
5
1
.
0
1.
8
0
15
1.
2
1.5
3.
9
0
.
3
1
0
.
0
1
3
0
.
0
0
0
7
8
0
.
1
2
1
.
0
0
.
0
3
0
.
1
5
3
4
4
.
4
5
3
4
4
.
6
0
1
MH
#
1
s
I
n
l
e
t
"
a
"
8
7
.
0
1.
1
9
15
1.
2
1.0
3.
9
0
.
3
1
0
.
0
1
3
0
.
0
0
0
3
4
0
.
0
3
1
.
0
0
.
0
1
0
.
0
4
3
4
4
.
6
0
3
4
4
.
6
4
3
4
6
.
5
7
1
.
9
3
OK
2
M
H
#
1
s
I
n
l
e
t
"
b
"
7
1
.
0
0
.
7
5
1
5
1
.
2
0.6
3.
9
0
.
3
1
0
.
0
1
3
0
.
0
0
0
1
4
0
.
0
1
1
.
0
0
.
0
1
0
.
0
2
3
4
4
.
6
0
3
4
4
.
6
2
3
4
6
.
7
0
2
.
0
8
OK