HomeMy WebLinkAboutCT 77-02; HOSP GROVE UNIT 2; HYDROLOGY AND HYDRAULICS; 1979-12-20• #
^DRO^^a^^YDRMlLICS
PROJECT
CAfZLiBAO 77i4cT 77- Z - C/AJ>T
DATE' /^'gg'-7f
ROY L KLEI\/IA, ENG/NEERS, INC.
BY: i^^tZ!,..^'?^. ^)^^<y^
DEC 2 8 1979.
JC""^Y or CAR! S-AE)
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20-
SLOPE-v. 12-
3 MIN AC RAVING
WITH SEAL COAT SEE
NOTE N9 9 HEREON
5.5*
MIN D.G BASE ON APPROVED SUB- ~ d''<S</>e/3
BASE (PRIMED). SEE NOTE N9 9 HEREON
_TYP1CAL SECTION
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CAO-USBAP 772JCT 77-Z UtJtT^Z.
see ST.cAf Tffptz
RESIDENTIAL STREET
ONE SIDE ONLY
S 6 7 8 9 10
DISCHARGE (CFS)
EXAMPLE:
Given I QI 10 3= 2 5%
Chort gives: Depth = 6.4, Velocity = 4.4 f fx!
20 30 40 t»
SAN DIEGO COUNTY
C€PARTMENT OF SPECIAL DISTRICT SERVICES
DESIGN MANUAL
APPROVED _/9,V,/^4C^/)f7y
GUTTER AND ROADWAY
DISCHARGE-VELOCITY CHART
DATE Iz/^oUy APPENDIX X-D
o in
Ol
3
OF FLOW-:/ - FE ZT: .01
11. la
(b)
PARTIAL INTER-
CEPTION RATIO
FOR INLETS OF
LENGTH LESS
THAN L^
.05 .05 .03 .10
L/L,
BUREAU OF PUBLIC ROADS CAPACITY OF CURB OPcMliNG liMLETS
ON CONTINUOUS GRADE
V-54
rOWATll
OFFICE STANDARD NO 108
cone. 1
• UTTtnJ"
ir
FLOW
GRATING a GUTTER PLAN
NOTES
I- THU CHAUT »,vtl •HATIHO CAPACIT.C.
• TAHOAHO tNATlNet (li-WlDf WITH
TVE -A-rCURB a OUTTt«
TYPICAL HALF STREET SECTION
(ABOVE BASIN)
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DESIGNCH^^
SHOWING EFFECT OF SLOPE
_GRATING CAPACITIES
ncL^'^^^^^'^^-C'^ OF LOS ANGELES 21^7"^'^^ 0^ PUBLK; WORKS ^
wo PlinJSf" ^^"^ ^^SIGN DIVISION
AUQUSTJM7
PgjQNED BY. EJ.aft W.H.T DRAWN RY: nn^
5
I r ' —
O.DePTH OF FLOW (Ft) ABOvrNORMAL GUTTER GRADE
1
Iv-13 1073. 03
INSTRUCTIOMS FCK USE CF fIC. IO73.03
CAPACITT OF CURB OPEIING INLETS IN A Lffff POINT OR SUMP .5
4
1-3 This nosfflgraph is based on the follo'/rlng conditions:
r ^ '• • . .
°P«"i"8 i^et (iM, grate) is located at a lox point'^Tthe Jraae.. ;
l^^W^f" rr?^^ ? the inlet must eventually enter the inlet and "will pond /•
•••.until sufficient head is built up so the outflow through the inlet yfi.ll eanal--
, f^tha peak Inflon from the gutters. .
"V'-i^' •' • • , ' . • • ' ' ' '-Tr-i^F-'-:
7j!'!5'iS^ nomograph.with any two of the three values h, Q/L, H/h, and read the ' '
Where^v.h = Total height of opening in feet .V. .• . >
.^i^JL a Total length of opening in feet
.v.^;l^': H = Depth of Trater at the entrance in feet • •. '.
. -i^-^Q « Total peak rate of flow to the inlet in cfs ' " -
Nonnaliy Q, L, and h will be known, and the nomograoh can be used to dPt.AT-m^„«» ly.J
depth of water H at the inlet. The spread of the v/ater on the sireet ^dlr^epeS
upon.the cross slope of the pavenent. aepena
The hordraulic basis ofthe nomograph is as follows:
(l)^;;:.?or heads . (depths of water) up to the height of the opening '"• .
^vi•' "• , -•-.•'.'* '•' f'..'.; •
the inlet is assumed to act as a weir with the flow passing througli'*"
critical depth at the entrance and follovfing the formula
•:^3u:'' • Q = 3.087 LH 3/2
(2) • For heads equal to or greater than twice the height of opening (5'>2)
.the inlet is assumed to act as an orifice follomng the fonnula ^'^ '
,3/2 ^H:JI/2
This is a rearrangement of the standard orifice formula Q = CA -/2iH
• T^^:^ 0^7 and H' equal to the head on the middle of the inlet opening
..• 2 .' •
(3) For heads with H/h between 1 and 2, a transition was used as the operation
of the inlet is indefinite.
1073, 03
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BUREAU OF PUBLIC ROADS
DIVISION TWO WASH., D. C. NOMOGRAPH FOR CAPACITY OF CURg
OPENING INLETS AT LOW POINTS ^S^^MA^)
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OPEN CII.VNNELS WITH UNirORM VLOW 7-41
Table RA. For Determining thc Area a of thc Cross 5?OCI!OQ of n
Circular Conduit Flowing Part Full
depth of w>ter
dtmnieter ol ch&nQol
fl . J- wd <i tha tftbulfttcd value. Then a cd^.
D
7 .00 .01 .02 .03 .04 .05 .06 .07 .08 .00
.0 .0000 .0013 .0037
i
*
.0069
.0105 .0147 .0192 .0242 .0204 .0350
.1 .0409 .0470 .0534 .0600 .0608 .0739 .0811 .0885 .0901 .1039
.2 .1118 .1190 .1281 .1365 .1449 .1535 .1823 .1711 .1800 .1890
.3 .1082 .2074 .2167 .2200 .2358 .2450 .25'tn .2642 .2730 .2836
.4 .2031 .3032 .3130 .3220 .3328 .3428 .352V .3827 .3727 J827
.5 .303 .403 .413 .423 .433 .443 .453 .402 .472 ,482
.S .41(2 .502 .812 .521 .531 .540 .650 .559 .609 .578
.7 .587 .508 .605 .614 .023 .632 .640 .649 .657 .666
.8 .874 .881 .889 .607 .704 .712 .719 .725 .732 .738
.0 .745 .760 .766 .761 .706 .771 .776 .779 .782 .784
Table 85. For Dolc'rraiuiiig the Hydraulic Iladiii.s r of ihc Cross
Section of a Circular Conduit Flowing IVrt Full
, . depth 6( water D . .t . . . j , Let -r. • !—i 1 •" T •"'1 ' ~ tabulated value. Then r - ed. uianiotor ol channel a
D
7 .00 .01 .03 .03 .04 .05 .06 .07 .08 .09
.0 .000 .007 .013 .020 .026 .033 .039 .0-15 .081 .057
.1 .063 .070 .074 .081 .087 .093 .090 .104 .110 .115
.2 .121 .126 .131 .136 .143 .147 .162 .167 .161 .100
.3 .171 .170' .ISO .185 .189 .193 .198 .202 .206 .210
.4 .214 .218 .222 .220 .229 .233 .236 .240 .243 .247
.5 .250 .253 .260 .259 .262 .265 .268 .270 .273 .275
.6 .278 .280 .282 .284 .280 .288 .290 .292 .203 .295
.7 .290 .298 .299 .300 .301 .302 .303 .303 .304 .304
.8 .304 .304 .304 .304 .304 .303 .303 .302 .301 .299
.» .298 .208 .394 .292 .280 .280 .283 .270 .274 .267
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