HomeMy WebLinkAboutCT 76-15; PALISADES POINT; HYDRAULIC CALCULATION; 1981-09-25..
.. ~V& VAN DELL AND ASSOCIATES, INC.
CIVIL ENGINEERS LAND PLANNERS SURVEYORS
171Kl1 CARtwRIGHT ROAD
SUITE A
IRVINE. CA. 92714
714-966-1100 REV
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17801 CARTWRIGHT ROAD IRVINE, CA. 92714
i SUITE A 714·966-1100
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AT THE UPSTREAM JUNCTION, STA Cj+I~.67) FL(N{ WILL
PA 5S TJ.lRU Q. I N THE PI PE.. FROM Q+17.48 70 6-1:39.67)
Q~3.lqclf I D,::().b$') .DI)= f).31;,-L~277,~J:
.5}NCE THE DISTANCE. IS SO GREAr; IT IS SIIf:1; T[)
ASSUME THAT THE FLOW' WILL. BE NORMAL BEFCI(E '
THE NEXT STRUCTURE.
JUNCTION @ 6-f37.6e ;
Hj FRCM THOMPSOtJ E Q
::: ().3' (~~f~. 7~)
A'S SUM ING TUAT St
., APP~/MATE5 7~E •
BIICkWATE R DIA6RA M BACKWATER CURVE) , " .
THE. JNFLUENCE WJLL EXTEND ABOUT 2' UPSTREAM.
IN THE: PIPE fROM bt35.4tt TO 3+/3.031
()= 13.5B d'S I Df. ~/, 37'1 0" ~ 0. 'f ') q. L= 322,4{, '.
FLOW BE NORMAL BEFORE iHE NEXT STRUCT-U·RE,
, JUNCTION@ 3+CA.94 : es=~~~
~u" fR()M THoMSON Ef1 l358c4 ~ I J.s·l~ 24.26c1s ~::a~ :J,~re' (SEE.PG'7~) .
TH£lNFLUENCE. WILL..
EXTEND APPROXIMATELY
'22 I UPSTRElfM.
BAGI<WA1ER DIA6RAM
,.' ::;... ......... __ ",I .k~''''-...... ,~'.: .... T~~ ... ___ ... ___ """~~~~_ j),if"h'/-'-:!:."'<;iW'r,~-~ ..... --:-;~:ti,,:,!,,':·':I';.'i"::;"~·n4~~~~~ ... ""~_~ ..
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~. ~ VAN DELL ASSOCIATES. INC.
CIVIL ENGINEERS SURVEYORS LAND PLANNERS
171Kl1 CARTWRIGHT ROAD IRVINE, CA, 92714
SUITE A 714-966-1100
LINE A-I'
I'N THE PIPE FROM 2t9B.WTO 1+38.951
a'=24.26 cPs J D!~/,4B~ D,. ~O.qO~ L-/59.75'
ASSUME FLOW W(LL BE NORMALB£FORETH£NEXT '
STRUCTURE.
JUNCTIONS @ J-f36.fJ6 q.. /tletb6,
l l).33A
24.2'c-k > IJ.5. I
llt ::().q~~ f)::?~3! (t::"4S
4.2.6c,
r
> 2a.B5~
-/),.::: }.I' I
4::11* '
~1 t~ S={).(jf5
flj-' J.08 (SEE P6,eJ'l)
INFLUENCE DIST=le' ,
> 32.16c~~
D,,:.112fJ '
Pc w:J.el'
~
Hj::: ~r~/ (SfE~ gJq)
I~FL UENC£ D/51 S l' ' ,
BACKWATER DJAGRAM
I'AGE 2. 'if
~.;."""" ___ ....... -._ ~ .... _ ••• _ ... ____ ......... ~.tt.J~~~~ .. ~,-" ____ ............... '_r tte~+.". ... tll.'''''·'"'''-' tt ~!.~ ......... ,.
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t, ~N& VAN DELL AND CIATES, INC, ~ '-CIVIL ENGINEERS ~, SURVEYORS" LAND PLANNERS
t,: " 17~1 CARTWRIGHT ROAD IRVIN~. CA. 92714 r SUITE A 7~4,966-1100
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DOWNSTREAM CONDITIONS
THE PROPOSED STORM DRAIN 1()'NS £X IST/NG @
S,A, O+QS.27. AT TUAT POINJ THE GRADE CHANGES'
fROM 1.5~ TO JD.tJ %. FROM THERE TIlt f>IP~
CONnNUES@ Jo.q% FOR 118' TO THE NEXT JUNCTION'
STRUCTURE. )T 15 SAFE-TO A65UME" THAT WE'
FLOW WILL Rt:TURN TO DJl::O.92' WELL BEFORE
TH-E NEXT J.S. AND T~AT ANY BACKWATtR eFrECT
WILL NOT EXTEND FAR~NOUGH UP$JREAM TO EXERT"
ANY CONTRDL f
· ---. ,--. .. ~ .. _~~~~ __ ~~ ... ~ ..... ~.;.~_~ ." ..... *"' ..... t··W"'1""'!_ .. -.:._ .... _ •.
'~~ VAN -DELL ATES, INC, CIVIL ENGINEERS
.v SURVEYORS .. LAND PLANNERS
17801 CARTWRIGHT ROAD IRVINE, CA. 92714
SUITE A 714-966-1100
LINF= 'A-2'
AT THE UPSTREAM JUNCTION J STA '1+14."1 FLOVV. WILL
PA5ST~ROU6H Ii. lNTHE PIPE FROM ~+14.H TO
,€'+2e.S7) Q=5.75.iPs, / De :()~3' ;I D,.=0.43' . / ~ L:. 265.2.4 ',
ASSUME NORMAL DEPTH lS 'REACHED BEFORE: THE
NEXT STRUCTURE.
JUNCTION @ ~+2'.b8 ADDS NfJ ADD ITIONAL .FLOWSO
THE BACKWATER EFf£CT IS NEGLJGI.BLE,
, N THE 'PI PE FROM b-f24,49 TO 3.,.33.00;
/) " ., /\ () kl/· , AD I U(=5 75 Ct'S 1\: O.Q3 VA:'T'! -6 L '" 2!1 . .,.7 • J"-'t J )
A5SUME NORMAL DEPTH: IS REACHED B~F{)RE.. THE
NEXT STRUCTURE',
-~~~?l.\; .. ~t:;. -::-:';' , .-' (""~:t.,,:.~,'?,~'f~~,~,, , fl~'::~~7,~~~:~~~!'t .. f!.'M~~~il~:4::1 .. ~,~"fl':'l; OW;M~~" :':','.~t1tM!Sr.;1"~ ;f!~~~~,!~~.,.):.,'I;I1, 't-+ i7f!1!r:: .. 'C, ~:~~~V-"~~"'.!--<'~:..:~;,"~. '~,~~f~··~""'~ ~ :' . "', 'r .. ~. ':' , "'" ",' ~fE" 5Yi: I JUNi,'@ 5tf!l:q,: lh~/1 "jJ6[ ~i52l)" , .. , " " ""', ' '\ , ' " ". ' ' , ' <
INV. HAL. IIC· ' VI AVo ' UL. ______ I #
ITA. D' • A'V 0 ". L........ ~ ILl" ILIV. lION I • f Sf f.. It, ILlY. ' , .. _
OtOI.78 J-tRff2. "'~ (52& 'ie;; ",.5 1,77 7.52 /3,31 QQ;, ItJ5 I)t61 "I" nrl () 14 OLd. ISZ!11 f)fl(),~ m~ ~ _ n " Ii 15z 113,3' o.ee /I Olbl Itl c> ~I~ , ' ,dT 153,·08 I~ Of~.b2 I~ ~'IS/!dI." I' /1 7,~213.31 O.f)8 /1 .01" ,DIU ;9.33047 0./4 . {)61 !538/ ~j t1 <
. ,,:),,= 025'pl:fO (~~)=& '5~ii1(t1~3)=19. ff ,Olbl ~62 O.q/ ,fJ.Q/' ~ ! : jl6fD3~~ . ~~ {~, ; I:; 1}7 ~~ {~?~ ~.6! I~: ! o:!.! liA5 438 ~fJ'f ()'7b aBO :~~ I J;
3-tZ9.f.2 I WI.~J.~ ~" " IT 32~ 5. 77 e 33 II .creo· a:oo 226U),~ (J.tJ7 tJ75 I!%J 5 I ~
I ' I I I, ,ItJ.: ~25J ~~ 33)= f),&7 '., ~ 3+~.(.¥11~f.~1i$~ IP!' lJi /,77 3-251)]5 ~33 1~5 aBO ,~Xl 1.3B 6)lJI ,,02 f)1J3 /SfJ6 I i ~
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~'1&' I:::==VA=N==DE=L=L=A=ND==AS=S=O=CIA=T=ES='=IN=C=.==~ \ V J SURVEYORS CIVIL ENGINEERS "LAND PLANNERS
17801 CARTWRIGHT 'ROAD IRVINE. CA. 92714
SUITE A 714-966-1100
IML IAJ
.c.!AIG' 'A--2,!€) jIlNt!!7P/-l (HttJ.6Z)
--=-I-:;--S;t"~) (SEE '~F6) - -' -------'-
s~=(~)'L
~ ~ (-5:5"0 t -:: ,0012
! 64'fp )
AI = (a:;1Z. Yz7'~1)
-= ,20"
V=' (6, -5.50 -44B A r.2.~ -.
pjy 71ZfrtvC C t0SS
~ /,0_ :.:L -= '2/
. ~';)
SF ::. (1) ~ "L
Sf ~ e::) ~ .. OO/4
'f =-; (.tA:Jlb )(7.87 )
'=" ,0/ V;~~ ~:: 2J~~
~v'l';l:h·''C.e £.'0$$ =-
V" Itt () _ . ~ .. 07.. ___
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e ••••••
LINE A-I'
Juctior Loss from Station 6+37.68 to Station 6+37.68
Delta Y = ----------------------------------.5 .,., 9 '* (A 1 + A 2)
( 1 3 • 5 8) ( 1 8 .. I 1 ) - ( 3 . 1 9) (11 • 8 1 ) - ( 1 0 • 39) (2 1 • 2 )c 0 s (4 5 )
= ---------~------------------~----------------------1 6. 1 ( . 27 + .75)
52 .51 = -------
16.42
= 3.2'
Delta ~ = DeLta Y ~ Vl w v1/2g -y2~V2/2g
:: 3.2 + 2_17 - 5 .. 1 = .27' I
Juctior LOss from Station 3+09.94 to Station 3+C9.94
Q2*V2 -Ql~Vl -Q3*v3*COS(THcTA3)
Delta Y = ----------------------------------
.5 * 9 ,.. (A1 + A2)
(24.26) (13.71)-(13 .. 58) (? .67) -(1 0·68) (6.03) cos (43.43)
= ------------------------------------------------------
16.1 ('1.77 + 1.77)
181 .68 '.
= --------
56.99 .
= .. ),19'
Delta ~ = Deita Y + V~wV1/2g -V2*V2/2g
:: 3.19 + ~9·i -2 .. 92 = 1.i-Bt
, •
Juctior LOSS from Station 1T18.66 to Station 1+18.66
Q2*V2 -Q1~V1 -Q3*V3*COSCTHETA3)
Delta y = ----------------------------------.5 ~ 9 x \A1 + A2)
C3 2 • 1 5) (11 .9 1 ) -(28 . 85 ) (9 • 'I 9) -C3 .31 ) (2. 69) cos (90)
= --------------------------------------~-----------
117.89
= --------
94.02
= 1.25'
16.1C3.14 + 2.7)
Delta H = Delta Y + Vl~V1/2g -V2 wV2/2g
= 1.25 + 1.31 -2~2
= .36 1
Juction LOss from Station 1+36 •. 66 to Statior IT36.66
, "----,
Q 2 ~ V 2 -Q 1 y; V 1 -Q 3 ~ V3 * COS (T HE T A 3 ) -Q 4'* V 4 ~ COS (T h £ T A 4 )
De l t a Y = ---------------------------------.-----.-----------------
.5 * (A 1 + A2) *9
(28.85)(16.3J~(24.26)(13.71)-(.33)(.19)cos(90)-(4.26)(2.41'co.(46.33'
= --------------------------------------------------------~-------------
16.1(1.77 + 1.77)
130.56
= --------
56.9 C;
= 2.29'
Delta H = DeLta Y + V1 w V1/Zg -V2*V2/2g
= 2.29 + 2~92 -4.13
= 1.08'
/
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, elNE A~2\ • q/O)
Jycti~r LOss from ~tation 0+98.43 to Station 0+98.43
Q~*V2 -Qi*Vl -Q3*V3 wCOSCTHETA3) -Q4*V4*COS(THETA4j
Delta Y = ~--------------------~-----------------------.-----~~--,
.5 * (A1 + A2) * 9 \\
( 1 3 . 31 ) (7 • 5 2 ) -( 4 . 74) (2 .68) -(2 . 56) (1 ,45)C 0 S ( 90) -(5 .5 ) (3. '11 ) cos ( 90) ".
= ------------~-------------------------------~~-----------------~--. 16.1(1.77 + 1.77>
87.39 = -------
56.99
= 1.53'
~eLta H = Delta Y + V1*V1i2g -V2wV2/2g = 1.53 + .11 -.. 88 = .76'