HomeMy WebLinkAboutCT 76-15; PALISADES POINT UNIT 2; HYDRAULIC CALCULATION; 1981-10-16~ ., ~7& -=V=AN=DE=LL===SO=CIA=TE=S,='=NC=" ====I \ V ) _SURVEYORS LAND PLANNERS
171Kl1 CARTWRIGHT ROAD IRVINE, CA. 92714
SUITE A 714·966-1100
CARLSBAD PAL JSADfS
. TRACT 76-/5
UN IT 2 HYDRAULJC~
.; ~~ VAN DELL AN TES, INC.
CIVIL ENGINEERS . SURVEYORS LAND PLANNERS
1~1 CARlWRIGHT ROAD IRVINE. CA. 92714
SUITE A 714-966-1100
~IT
J'N THE STORM ORA-IN fROM STA ']-I2~,ql TO 5TA
2-f02.~' THE C.RITICAL DEPTH -IS 1.35~ AND THE
NORt1AL DEPTH JS O,9q~ BECAUSE. or TH£GREAT
DISTANCE INVOLVED/ IT IS RE'ASONA8LE To ASSUME -
d:{).CR' AT THE ENTRANCE. TO THE NEXT JUNc..,/D-N.
A. IlNA·l-YSI$ OF THE "J'tJNcrloN ~ 2+l)2.qf.:
o
/,'fh 1!; 2. 21 ~s
,TO DETERMINE IF A I-lYDRAUL/C "JUMP WILL ()C(URj
THE DOWNSTREAM D.EPTH WILL BESET AT CRITICAL
PEPrH AND T14E MOMENTUMS COMPARED.iC
Ma .~ M,n-f~n(QSe-fttA,+Az).A~
""hlte; M= ~ OfId~~:z+~-q. .
,.AGE
.2-Of
! . I
,f" ~ Ie ANtic . J ktdt~l ~A"9tkt BUffllf.tI) £r( i ~..,-,-. '." " ... .,....-~..".~"<"".............,.".,.,-.~".~-;..'" j
'~~ VAN DELL TES, INC: CIVIL ENGINEERS SURVEYORS . LAND PLANNERS
171Kl1 CARTWRIGHT ROAD IRVINE. CA. 92714
, SUITE A 714·966-1100
L1~= ~4+ a'l9-/.4/: -~P3
At':. J,22
Az -=1· 72
-.
4.3l t O. (2 (~5 45c -+ t (1,22 t (, 7z) (~(J}) e",4.35 > 4. I B
SINCE THE MOMENTUM COMING IN IS GREATER .
THAN M2tl THE IN,(or1 ING FLOVvS CAN MA.1NTAIN
SUPERCRIT/CAL FLOW AND NO JUMP WILL OCCUR,
13. ANALYSIS Of THE J{)NTION @ 1-f26.82! .
M, >
0.: 15. 22c-1s
~j~15bt4 ~
,4GAJN THE UPSTREAM DE.PTH WILL BE ASSUMED.
TO BE NORMAL) DOWN STEAM DEf'TI/ SO AT(RmtAL)
AND THE MOMENTUMS C.OMPARED.
~E
~~1& VAN DELL AN IATES, INC.
CIVIL ENGINEERS SURVEYORS LAND PLANNERS
171Kl1 CARTWRIGHT ROAD IRVINE. CA. 92714
SUITE A 714-966-1100
M -Q{jy~' = 5q() m-1.2 2,1ft) · '-"
" M 3.56 -~32
3n'::: (.22X32.rx)-A, ~ 1,22
2-ae,7$) '; 417 2. L3 M2(. =-(2.'"":)(32114) I A2:=-• F
5/10-+ ~3i(C$5416+i (.1.22-12.'3){~37)= 5,;7 > 4,(7
.', S~PfR(RI1'I(AL FLOW WILL Br MAIN1AINED
AND NO JUMP WI LL OCCUR.
C. f)9WN5TRfAM {ONDITIONS.
THE NEXT JUNCTION 15 APPROX. 300' [)OWNSTEAM
ANOTI-IE PIPE CONTINUES AI 6.4~ 5UJPE To THERE.
T~E fLOW WILL RETURN TV .Dn= 0,71' WELL BEFORE
THE. NEXT JUNCTIONJ JT (5 SAFE TO ASSUME -mAT
ANY BItCKWATER EFFEcT AT THE DOWNSTREAM
JUNC7/fJN WILL NOT EX.TEND FAR ENDu61-1
UPSTfN1 -m EXERT ANY CONTROL. THEREFORE
THE DEPTH UPSTREAM WILL BE NORMAL AND
THE' CCJN1RDL WILL REMAIN UPSTREAM.