HomeMy WebLinkAbout; Spanjian Residence; Hydrology Study; 1987-08-281-7 PACIFIC RIM ENGINEERING, INC. 245 N. Rancho Santa Fe Road Suite 208 SAN MARCOS. CALIFORNIA 92069
JOB s53Ah)JIm Be;lDwE
SHEET NO.- OFL
(619) 744-3300 CALCULATED BVc-rl)p OAiEx@- ~ --
,- CHECKED BY DATE.
3.. 35 ifl/.X..
..
.. ..
-nnl mk u I- a,.%
PACIFIC RIM ENGINEERING, INC. sPAt.JJJIW Vfi~kW& 1063 ".
245 N. Rancho Santa Fe Road Suite 208 SHEET NO. 2 OF a SAN MARCOS, CALIFORNIA 92069 (619) 744-3300 CALCULATED BY GuP DATEB/2B/H7."
CHECKED BY DATE.
LAID USE
Undeveloped
Residential:
bra !
RUKOFF COEFFICIENTS (RATIONAL METHOD)
Single Family
Nulti-Units
. Nobile Homes (2)
Commercial (2)
80% Impervious
Industrial (2)
90% Impervious
YOTES :
Coefficient, C
Soil Group t.'1)
(1) Obtain soil group from maps on file with the Department of Sznitar..?
and Flood Control.
(2) Where actual conditions deviate significantly from the tabulated
imperviousness values of SO% or 90%, the values given for coefficie::
C, may be revised by multiplying 80% or 90% by the ratio of acr.Ja!
imperviousness to the tabulated imperviousness. However, in !:o s?se
commercial property on D soil group.
shall the final coefficient be less than 0.jD. For example: Cot?s.~21- ..
Actual imperviousness = 56%
Tabulated imperviousness =
Revised C = X 0.85 = 0.55 rn
. . ...
t 0 u
11-A-7
,-
c
. .M M
.. .
HYDROLOGY AND HYDRAULIC CALCULATIONS
DETENTION BASIN DESIGN
FOR
SPANJIAN RESIDENCE
CARLSBAD, CALIFORNIA
ENGINEERING DEPT. LIBRARY
City of Carlsbad 2075 Las Palmas tlriva Carlsbaa CA 920094859
August 28, 1987 J.N. 1083
Pacific Rim Engineering, Inc.
245 N. Rancho Santa Fe Road
Suite 208
San Marcos, California 92069
619/ 744-3300
Y
I L
Ch L
3-
.. e. 0 z m U ,c - n. 2
+ L 0
v) E
r
0
V aJ
c
N " " m =a-
c
I 0 *
6-Hour Precipitation (inches)
OUIOlnOID 0 In 0 In a ..