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HomeMy WebLinkAboutSouthridge Village Catch Basin it SOUTHRIDGE VILLAGE CATCH BASIN CALCULATIONS STORM DRAIN LINES C & D • • McCUTCHAN Client • Job No. M S D - 7 ° °I 265 North San Gabriel Boulevard Pasadena, California 91 107 [213] 795 -5162 L Q,/23/i;3 By Date =.t LINE C CATCH BASIN HYDROLOGY • McCUTCHAN 265 North Son Gobriel Boulevard Posodeno, California 91 107 [213) 795 -5162 C By lient Job No. Date l i , `omo, STUDY NAME: Sa�+gt VI 1.,./... L" " C - CATcI•+ ASIN 4 yn *ot,o6y CALCULATED BY: S. A• i..rsKa li 1 ° YEAR STORM 1 -HJUR RAINFALL (inch) = O.90 ; INTENSITY SLOPE = 0 .6 CHECKED BY: PACE N[MBER I OF CONCENTRATION SOIL DEV. AREA I C Q Q SLOPE SECTION V PATH T 'IC HYDRAULICS POINT NU?R TYPE TYPE (ACRES) in/h (SUB) TOTAL ft /ft fps. ft. min. min. AND NOTES t!/}TCI'f /N 11 - I g2I- It- r. coNc PRt-- "IS 2- lo s�z STIz EYf /on / 11.8 a/ A sTwr d q 22- , g2 1 . f=9 41 b 14=1 , Iro,z - coIc. a. `177.1 - /2 _1 xYr" 1 OO u \o , 1 C /\ 0 .7 2.45 ,%,25 1 ,A r�1'� zt ,. \o, SZ Ft'I- o.o/ .Bzl b 1 , A- ( ,ot1 V-1. STtz 2.5 (0S,a P 4. 4 - S , 5 1 4 , 4 - Pr�Rt� 3.s 2.O .5 ) ac9 a ) ." =oj1s- th. STR• /ai r 0. 1 - c uNc. � � g � 92.D 11, t3 A al: - x C 3 P STRF 1, (0 2.2.o . g2 1 . ° ) 11 en ,°) tt rolL3 - �� F 5-7 t y I N,T Cora( Lazy 5' `�'� its S 0 e. / 4Rt'A 6C N C3 4, Co t. 4. 2,6S ,Q3 10.6 g.7 tests -alaa Pte.. LoT M \0'1° °.01 2 �= �.. 3 • °5 5Op 2 ' � A cowt 1. \\,0 Z. , 2)2. 20.7 1 4- 31.3 H .:.. to...-r. H,u_stbt / Iv->C7 tM- C o A •R K 1.6 S6 " '— VPt 4 13 - q 0•9 _ 70O \�. •S C A sTR �� - � 0,'Z L 2•\5 !azk 2, 4- =' 4s' 12,5 a,3 -9o7 It ST, ' 2. 4 00� 2, S 640 4.4 R s-r o. b 1,8 .2 t 5 0. ° ) 16,q acg 7. 3.3 N D -19 FIGURE D -6 STUDY NAME: GArcrt 'b As IN rayoRo�.ovy - LI►JES C \ 0 YEAR STORM 1 -HDUR RAINFALL (inch) = n ,o) o ; INT!IMITY SLOPE = o , 6 n CALCULATED BY: C HEOM BY: PACE NUMBER I OF CONC:ENT'PATION POINT NUMMER SOIL TYPE DEV . TYPE 1 AREA (ACRES) I in/h C Q (SUB) Q TOTAL SLOPE ft /ft SECTION V fps. PATH ft. T min. TC min. HYDRAULICS AND NOTES CATGFF gAS114 C A ST. 0,7 3.l 03 0.6 %/2. srr IOo r 4 '�' 4.8 �s = o . 6 cFs H =al4- t)0'3 = 161 S'A' c' �' J tJMIAL CON kr— L�.TERAL- FROIN nor �'` 25b.V. �j,0 2, ,l9 \(o,o 11. Q--13 " 16,0 0/07- H "0roo 1 �2 S'T 44o s ,o lNlTl# COW ARE7. ST. 0 .4- 2.,5 .0i 0 -0) 8, o Q�g 09 7' Vk ST, 440 B•t7 G� Pc ST D, 4 2.15 .`a2 O, 6.0 Q 0- 141 F l-ovj - T3 O 14.7 1.k'c��P�.ti t o 1}_04 r GNEb'� 610 r ►s, o L s� s 571s \+16.4r7 p. S�µoOl 2, I.�S SQj 2-4- Q113 = Z,4- 10 n- i9 FIGURE D- 6 r + i 1 m m m m m m STUDY NAME: L In1c C- 1 - CA,-ti BASIN NY Qt-0G7 1 o YEAR SMRM 1 -FOUR RAINFALL (inch) = o , c 7 ) o ; INTENSITY SLOPE = 0-6 CALCULATED BY S.A• LISKA CHECKED BY: PAGE NUMBER 3 OF CONCENTRATION POINT NLM@ER SOIL TYPE DEV . TYPE AREA (ACRES) I i.n/h C Q (SUB) Q TOTAL SIAPE ft /ft SECTION V fps. PATH ft. T min. TC rdn. HYDRAULICS AND NOTES LA."TERRL S'To8 C. ay C -� -� (a IBDo . '1.2 Z.I - 73 11.2 1•{r 436 - I S, " SMEt-r FLOW , l ooms 13'O IN TIAL conk Ae� 11.2 1k=ik ¢ `/z s-r. \00 10.5 I1fITIAL c10NC AREA 2.4 825 1. 4 ie� Io.S 1.4 '005 1 �2 s T. 2 ,2 34.0' Z , 5 \3.0 o= )A _ 426 - owe 1 '2 ST '730 \o b IIJ%TIf -l. COWC. kV- C.1S # CI - A ST D,b 2.35 025 1.2 lo•b Qc� I.Z N= 426.$ - ae.5 l0' S4Ao -r FLAW 1NTAL couc.. A, - ett. LATERAL Grp, 13 t6 . 12 A coMM�. Rcc. Qcc3 = 11.3 ci Itq a q = 11� SItI�T FLoW 000 101$ IN1riAL eouc. ARLA s ,Ne c,g CI - 3 A 25DY /�o oj, O 2.35 • l(o,� 10.0 16.'3 .00") ,► 24 �.c.4, '7.6 4.00 0.11 Ic'= .363 �, = . 666 l� U D,u. /xc" c Sao 4 2,25 `i c8 _ 24. I H. A q - 43 ' 1 /L 070' 1N�T, co.sc AVVA 4 2.1 02 2 4 Qc as = 2-4 J-o- STUDY NAME: Link C--1 - . GATe++ BASIN HYNZOLo 6 1 0 YEAR STORM 1 -HOUR RAINFALL (inch) = 0.90 INI'FTTSITY SLOPE = o . 6 o CALCULATED BY: S.A. LISK� CHECM BY: PAGE NUMBER 4. OF CONCENTRATION POINT NUMBER SOIL TYPE DEV. TYPE AREA (ACRES) I in/h C Q (SUB) Q TOTAL SLOPE ft /ft SECTION V fps. PATH ft. T min. Tc min. HYDRAULICS AND NOTES L ATE'M� S't v i3 J �1 =423 q Z .54 -kUr— W IN1T1A� CoKCEI•�TR',TON A�fA aG f3 (.. 'O H =4�q _ b IN TIAI. CoNC . AREA C.B. C I -4- A sT. D.� 2 Qj 1.0 13. 0 1,0 F{=olta - 0)2-0 + , )- ST. 1 14.3 Iu�T. toNC Aae C,13. #�t - S P ST 1.1 Zoo ,82 1.$ 14.3 1 ' 4'io -oi o6 kh rr 2, 1170 6. 1 A s 1,4- 1.55 ca - 3.6 n - io FIGURE D - R cz,�c,� _t3AS�v_�, c► s . s 6a �g4,2q rI i L FtiG 1 / f �L OF C,tl`c r9AS1 ' Ot T3 GON w/7-yJ lO % CAI 7-r- kcF -7-IOV L - 4:D, -- 0 , ( rA 4 _ ) 3 /2 a = X 3 3 O, 2oj / FR S7 1z EtF7 4" WR 1 FO2 Q - ll b cfs 7 C3� L= 4-a I 0 Sc L =G� MCCUTCHAN 265 North Son Gabriel Boulevard Pasadena, California 91107 (2137 795 -5162 Clieet Job NO. 8y Date 3 eA`T "aSi!� Nom• cZ S. Si�� LIV OP.K S� 4.2 4 0) Lc-N c--„ l C ,- C 4 - mkA S A. S i N I -- Fob F�ow co N ;� iar•., � C F s 3 3 So 0- v5C L = 16 w�ru S ' Ooh 7 p�oa� G' , Q /S' /l _ 60,325 Cl ient MCCUTCHAN job N& 265 North Son Gabriel Boulevard Pasadena, California 91 107 [213] 795 -5162 I BY Dote l 7 CATcN 1�ASIN No, C3 cuElR A�f v � 1 L E u 6TH (L) 01 C•I,Tc t► $AS IN sur,p � - T7 1 -- � C•F OsoNG -, L x 1,3a So io 1,3 6 = 4-, GG ' 4 � Lp � /N cRowN of LivF DAK AVE. � H = X06,71 - 0 1 0 6.13 = 0,Sf3 � M /►fir , 0 : 2. - ) 3� u 5 [I L polim owl OF G�YtESZ F•G. McCUTCHAN 265 North Son Gobriel Doulevord Posodeno, Colifornio 91107 [2131 795 -5162 Clivd SooTt'r ,bW VIG L.�6 - r Pr-WW — Job No. Al -So7- 0/0/ By S.A.L. Dote ±L Z�¢ PAGE- or= n C. $. Nti c4. FoR SLOPE CONLJ /T /J/J wrri L Q 3/: — 0, ( a + �-) Sa L = 3.3 0,`7 133 -t- 4n)3 /2. L _ ' r,SG / ) U L =g w� <N a = 0,33 (_ � Local. DQ�pESSrov) �RoP FQIQ 97-pirT ct.�R-r; 00�)D Fµ n• p�rNS Q = 3.3 c-FS cs VZ' 34•�� ¢o / M CCUTCHAN 265 North Son Gobriel Doulevord Posodeno. Colifornio 91107 [213] 795 -5162 Gfiem Job No. IN Do* t. 5, hr or c HL"RI°`! P. -E s7a 3 "l2, 59 / o o "lo l uTbDeCr: pl' /�/J; S►aF LIVF- OA IC ,avE S7 s4 *3S, SL OPE of CONNe�o� P�Pf� = ° S o 1. �0 — °J O O ,'2o = , D9 4 - i b ,�7 k` (� �n� D,2 `10/3 44-) D5 7 , b,� - 0, 09 C M V" / - OX S ' 2 � A 4- FINa L tJ b CL) o F o P&'OI USA SVAn t- oR MVL.A E Q5o1, a Quo K I.3� Lz Q 3.09'7 H GRowN �w� p/tyC F�• G�'�etq,.. w�'rf} locati. �-Cr+3'J• WNE•C 1+= °)o (, — X05,80 = 0, 3� I , o0'] L = .2°) , WE' Lt 4 Ckm I McCUTCHAN ,, 265 North Son Gobriel Boulevord Posodeno, Colifornio 91107 [213) 795.5162 10 Ca--c aASI0 )Jr,, c6 Lc ti'GiH � LL OF C�PCNi�C 7LCrP1 CON�tTO ►J W tTrt 1O ° Yo INTER r.l1'TIC>IJ L = - -- \ µ , vk D��,33� 7 0. + � ) " A l.= b.°1 t,2 > 3 /Z c� Z. 0,0) C+ s C, g, G - 1, 61% - , dte7 L. 3,2 v5 5 - L- = 4 no M ,21 � McCUTCHAN 265 North Son Gobriel Ooulevord Posodena. Colifornio 91107 [21 3l 795 -5162 Clio* I " N& C , AT( r� \ 3AS i to No , C 7 (I /LV' , &T - ;i (L) OF OPEN IN G-- S�o Tq l00% INTCRcEPTlorl, L= Q ^� � J i7( at U So , + L = 3.2 USC" L= 4 °) cfs 5 C t? 016 -7) Q/, I/, - Gqs 0,21 MCCUTCHAN 265 North San Gabriel Boulevard Pasadena. California 91107 [213] 795 -5162 Client Job No. By Ooze 12 G�'rcIt BASI k T _ EK of LIN G Q = Q� - 56.6 C . SVN+P CoND1TloN ML 10 Bev QSflG Qio�V 1.38 - 7g .Q C+S 4 f VE'P - n tp,L GMT, \k S 7 I 0 PER P\ -k-rV 2,6 - o6S6 ?Roee P = 12,57/2 = 6 28 b \vtD7 � 2 FoR c 2� Q�p = �g•4/6.28 = IZ.48 3 J ARfp. = `tCR 3.14 2� = I Z, S 7 s roF' I)-JLVrs S Y, = 4.00 . 8(. \2,57 + 4,00 14,0(, D��pE oy 2 FaR cw 1�+G . 14 .06 2 = 1, 0S 4) Q /a ; 78 . Y-7. 0 = ► ►. Is WE ca„RCt� = 4.0 a.v►aua�� v 51 (,b) � F� �� - �� C V� 6weN' 111C�.D 1 \.1 > 1%.%c* TN c}w -r-o R cr OIL 1 MCCUTCHAN ' 265 North Son Gabriel Boulevard Pasadena. California 91107 FT [213] 795 -5162 CI" -ZG�-' V\LLaGt J M& M -0101 CATCtE BpkS ►N cA� c S 1 S s..��._ e/27/e4- G CA i C++ BA SIA / ,)0 C-1 LFNGTN �L� C F CfaTCH 'S AS /N SLC>PIN6 r 'TIoN wf /oolc itiTMCLr- 3 A L^ Z.4 . *- ,34� Vsc L � 7 / S = 006 L ( lu . n s J c � tz,g Q -2, ei McCUTCHAN 265 North San Gabriel Boulevard Pasadena. California 91107 [213] 795 -5162 cl»o job No. By Dote k4- 6k H 3 A S /N \/O. S�0 j)1,0 o 7 - /wki wrnq I00 % INTrjZc6-Pr/0N, L= a ( 1 Z 11 (.33 + ,I t) Q= 1.2 cfs C.a G = . O 0 66 3 ( A1. -WL- coRB� I QY',Vs 1,47 F:�.t , S C+4A - r! I MCCUTCHAN 265 Norrh Son Gabriel Boulevard Pasadena. California 91 107 [ 2131 795 -5162 F bZ Dcft IS G�T Cr+ f3AS �n� No. LL• CL) OF SUMP C iTJ N USF` C; So 2,4 X 1 36 = 3,3 rr�S' L= &A, 3,01a7 ( H, W 1.1 3.o137 cQOwIJ Low POINT' »'�, bQ , G,�-n w/ At L,b.J, wVA eRE! 1t= °5 it. 4¢ - 9 to, 52. = 0,CS2 i McCUTCHAN 265 North Son Gobriel Doulevord ce'� Posodeno, Colifornio 91107 [2131 795 -5162 c ram I Job N. sr Do+e it C► FiN C�� o c �,��.+� r��s1N� SC G - C -10iJ W 179i 10 0 /NTMCL-' P - r1DN; L= Q L�, Fri. ST� C.tua'p.T', L= 3.L� so OF' L. MCCUTCHAN 265 North Son Gobriel Doulevord ce Posodeno, Colifornio 91107 [213) 795 -5162 a»o ,o, M. t B Daft I 17 11 �r ie 1� 1 1 cFmd McCUTCHAN Job H& 265 North Son Gobriel Boulevord Posodeno, Colifornio 91107 [213] 795-5162 Do* I I I I ( �J I i c 1 LINE D CATCH BASIN HYDROLOGY McCUTCHAN 265 North Son Gabriel Boulevard Pasadena, California 91 107 [2131 795 -5162 Clio* I Job N. sy D ft 0 ^ S STUDY NAME: L 19 f= — C N C-tk v&N S IN NA\J MOL_o G y L 1 N E p- I / 1b YEAR STORM 1 -HJUR RAINFALL (inch) _ D INTENSITY SLOPE = 0.6 o CAI C ULATED BY: S.-\. , CHECKED BY: PACE NUMBER OF CONCENTRATION POINT NUblBER SOIL TYPE DEV. TYPE I (ACRES) AREA I in/h C Q (SUB) Q TOTAL SLOPE ft /ft SECTION V fps. PATH ft. T min. TC min. HYDRAULICS AND NOTES A ST 17. ,q25 1.6 H = 45 - a� I , 9 1 /2 ST • L-Z - 710 f q a. Q INT{,` CoNC. �a= 1.6 A sue. 0,6 2.45 625 1 acg' t 6 N:a� h =O)fo - I/TL T• 7►o L= a, k 1►a� <Ip� CoNC. �.�Er sT, Q� 3,2 G2a G.g. No, b A il•ovST•. S .� 22.5 2.0 02 36., _ 50.7 � EX�ST►w+Cs 12" (� Q.C.• SlWE' A M IN U V-)/ IV wb vjoku,. " YbVWX LESS 1. 00y AC• r4k L-04 C.'a. lb -1 )4o. D-3 S+FowrJ Ar3vJE, N D - 19 FIGURE D - 6 a i STUDY NAME: SovTK'Mjb6-V- v%LLJb.& - p+1 = --- UPF -1 �(tST�WG- Co1+DITto►�S l YEAR STORM 1 -HOUR RAINFALL (inch)= INTENSITY SLOPE _ CALCUI ATE D BY: CHECKED BY: PAGE NUMBER OF CONCENTRATION POINT NUNBER SOIL TYPE DEV. TYPE AREA (ACRES) I in/h C Q ( SUB) Q TOTAL SLOPE ft/ft SECTION - V fps. PATH ft. T min. ZC rtu n . HYDRAULICS AMID NOTES Sol A � Lowe° v2F5 - 7, o 535 6 �? 1i -464 - 2i l SOU t'r Flow r t000 t1a tom, o "43 - 9*8 1 r1. - rvwkL V"Ll 1,3 r l000 W-6 Rrr 2 .(6 o N D - 19 FIGURE D - 6 C,4TG N �3 AS � N No • � — 1 SUMP roNDi7�lo/�/ 3 0 07 � L = 2,2 L - 0,'71 I USF" L - 4 CriN, / L o CATtoN Q So Q x c•Q I.3 b I,G x 1.3x3 2,2 rFs. MCCUTCHAN 265 North Son Gobriel Doulevord Posodeno, Colifornio 91 107 [213] 795 -5162 crwo I J06 N W oo+. 22 A/o, SuM h CONDl7 /Oi� — IN 7 CA, L TD C./3 No Z) –/ McCUTCHAN 265 North Son Gabriel Boulevard Pasadena, California 91107 [2131 795 -5162 cliwo ' Job NO. !!y � Daft 23 CATctr FSASW b3 Sum'[" c'oND%TloU, Q� x 1.3d c,py c.p Q = 3.2 A 1,3U = 4.4- cis l!_I 1'w�j RC QuiRE� L�1a�TfF (L L= � C N> 3/2- 4.4- WaERiw N MAY 1b kv0ll' OvEQ t� IN(r cu�8 oN Sou-m SibE 5r = McCUTCHAN 265 Norrh Son Gabriel Boulevard Pasadena, California 91107 [213] 795 -5162 CG«M S %UTNR ♦ Il( Ill6 ' Jab No M - 50 o % o a , S . A • L • Date 6 � Z4" /04" :!:::]: 24- G &T-C -H %AS1!`I - - - -b _ 4 - L�c15T tw ( ASs INLET foNTRdI.. AT 41smINw 12" It, c,p. T}AS'N F R O i A L A , t o . 'tb bc?T, c "wr Z.6 - 061( 6 Q t>r 12" R • t . t� H c of 4e, o - - 1, 0,/b = 1.7 - 7"c - fkss 'PTIoN Is Mk:bF * -«I IS -rtMc' 'TNaT TNf c #-'rcrk BA's I tJ b - ¢ 5AAo0L_ij 8 F SI G tJ b� Fort '�++E' sxIsTIN G- CcrblTloNS or - p><vsLOpmo•rt' f NYIC'AoLO(,. T *Is 13 E3e -rAU5C W LA►•+ h Gs MF - TNRT W 1 ETI T+1 of VOIZTtlr S in e1' OF d uRupl4 AV IC %S D E V FLo? c b 164. * to I %jb uST'R t.ea_• A,R A, 'T+11c' �c!r 'A1 MrAI. F DF �vRu'PA AvF� 1NCwbINV- sTdRAA bQRtL) WILL f3F RE4v1�6`t� TO ) At B�I�T T++f C t R - L+cTtPAL T gC"' G , D No . t� - 4 'rD C 0 Tl�t -tic lo�l ST�ucTut IS St �� Fo12 T+1f l>t- TIMATF" Co►u�l'TO of �>= vF�o'w+�T� 41owFYC?. F�tc�Wrl Lwe 1> -1 C"AISTINCT NYbP oII­06y Q = , o , ,o SiD QSO = R o x 1.38: 26.z C+c So Q To D - 4 = 4 = 22. C `i-D b r I to r me E'er" b' McCUTCHAN 265 North Son Gobriel Boulevord Posodeno, Colifornio 91107 [2131 795 -5162 1-L of V - C•p, W k NL"V.)aLu c .8 10 FoR sQM2 QSoc,Fy' 90.7 X 1,36 = 7o 4S rtlw CREST o€ E'�usTlNr- Ror.O = °i 4 8, 0 I Job No By Dote 2S CR`�'t c3ASiH No D- 4( CoNt &� FRoM pLAZTE 2,6 - 065 1 6 (L - A. Co, RD.DE'PZ,) ['ROvh - r %C cOzT5 a/p - 2,g5 © Q/ = 5' 3 Re %J1%6D G'RN C 1 - 4 E ( WMO '"Q = 22,2 C- F1zom ►� P - Q /2,85 : 22,2 7,g = 2 Z. 2 �5. 3 = A, R',Q•�Ir'2k� P 7, g x 2 IS,fe' FoR 2 wiDC�' �R�TE R6l�A L= IS,` _ 7.6 us F 8 2 sO 4 2 � �c 2 GRa.TFs 1�ou151� � A�� aw Foal �IOc.K QCs c� R A = b K 2 = 8, 4- A�� F�ow A1MeP DwAF' ty 6 r ESllK4TM W74 o+F "A' t� N TNKiW uP ?11 s AS, FO t2 2.� w OD F- Cr'R aTc , R lr Q t ip L = 14 /?- = 7 1 Os r 8 G&M MCCUTCHAN Jo b H& 265 North Son Gobriel Ooulevord Posodeno, Colifornio 91 107 [213) 795 -5162 26 I Y ( It0 10,000 6,000 EXAMPLE 6. (' 166 5� 00 o•12 lash" (3.5 fast) 0.120 off d. 6. ' 144 —4 mw feet 6 ' !. 1>)t 3.000 (1) 2.5 ..e 3 ' 4. 4. ,. I wo (1) 2.1 7.4 =.000 (3) 2.2 T.T 4. 3. 1 1. — lot a 0 In feet 3. !! 1,000 !. i 600 ' I . 64 600 / / _• _. G00 400 300 t0 u =00 1. _ � W .' 64 0- : ' W 100 C $ t !0 60 1.0 1.0 4= �TYPECE 1'0 40 0 SCALE W .'. MW S! 30 (1) S�sore Np with ; •! .! 33 Aeodwoll •! L� 2 0 ts0 0rsewa and with Aaodwall W Z • ° ., 3) Groove and !T � aa)astlao 10 ;. !4 ° .7 6 To "a scale (2) or (3) project ! I Aerifootally to fsala (1), then 4 ese ftroltAl tasllned Ilea tAr*v"h / 0 end 0 scales, or ravarfo as .6 .6 / 3 Illastrated. • 6 .5 .6 •3 1.0 I! 1EADWATER DEPTH FOR CONCRETE PIPE CULVERTS WITH ENTRANCE CONT Plate 2.6 -0616 �.. 2`7 ' This plate applies only when the grate is located in a low point or sump where the water will pond at the grate. The capacity of the grate depends upon the area of the openings and the depth of water at the grate. Recent experiments have determined that a grate will act as a weir and follow the weir formula for depths (heads) [I -1 0 I ( on the grate up to 0.4 ft. It will act as an orifice and follow the ori- fice formula for heads of 1.4 ft. and over. For heads between 0.4 ft. and 1.4 ft. the operation is indefinite because of vortices and eddies over the grate. In the usual problem the following are given: 1. A particular design of grate with dimensions. 2. A design discharge (Q) or information as to drainage area, rainfall intensities and runoff coefficients from which a discharge can be estimated. Procedure: 1. Compute the perimeter of the grate opening (P) ignoring the bars and omitting any side over which the water does not enter, such as when one side is against the face of a curb. Divide the result by 2. This allows for partial clogging of the grate by assuming that only half of the perimeter will be effective. 2. Compute the Q/P ratio. 3. Compute the total area of clear opening (A), excluding area taken up by bars, and divide by 2. This allows for partial clogging of the grate by assuming that only half of the area will be effective. 4. Compute the Q/A ratio. 5. Enter the chart at the bottom scale using line (a) with the Q/P value and line (b) with the (VA value and read the re- quired head in feet at the left margin. 6. If the required head falls below 0.4 ft., (a) only will apply. This is the usual case. 7. If the required head falls above 1.4 ft., (b) only will apply. 8. If the required head falls between 0.4 ft. and 1.4 ft. the actual head may be anywhere between (a) and (b). Use the value that ves the most conservative result, being sure to use line (a with Q,/P and line (b) with Q/A. If the inlet is a combination type with grate and curb open- ing the recommended procedure is the same as with a grate alone except the perimeter and area are not divided by 2. The reason for this is that the curb opening will serve as a relief in event the grate becomes clogged. With the grate operating freely it is questionable whether much water will get to the curb opening until the discharge is sufficient to submerge the entire grate. 'AP-10. If the grate has an appreciable cross slope so the side away from the curb is higher than that next to the curb the inflow over the side should be determined separately from that over the ends. Use the depth at the middle of the grate for end inflow and depth at edge away from the curb for side inflow. INLET CAPACITY OF GRATE AT SAG Plate 2.6 -0658 1 7.9 �piW! Yit11W! WYI{W YW YW I!W INS Y1►1W aY�� WE i+ll�i /YYIYIYWY�WIIW=NMI" Mw =mom mm MINUME �.��es����■����■�e��i�e ■ _...._,.....� Mw -�-A WIN w_ �piW! Yit11W! WYI{W YW YW I!W INS Y1►1W aY�� WE i+ll�i /YYIYIYWY�WIIW=NMI" Mw =mom mm MINUME �.��es����■����■�e��i�e ■ _...._,.....� Mw D 1 1 1 I?I IJ i Is- n 1 1� 1 ©1977 TRAFFIC CAST IRON GRATES OR COVERS AND FRAMES WITH OR WITHOUT FRAMES SPECIFY GRATE OR COVER SIZE A -2012 GRATES AND FRAMES A -2017 COVERS AND FRAMES GRATE OR CLEAR OVERALL HEIGHT APPROX. COVER OPENING FRAME FRAME SHIPPING SIZE WEIGHT SQUARE A -M 2 TUM BUM * � /z 14x14 12x12 17x17 2 80 * 16x16 14x14 19x19 2' /2 105 * 18x18 16x16 21x21 2 150 _ * 20 x 20t 18 x 18 23 x 23 2 180 * 24 x 24t 22 x 22 27 x 27 2' /z 235 * 26 x 26t 24 x 24 29 x 29 2 283 * 30 x 30t. 28 x 28 33 x 33 2'/2 342 * 36 x 36t 34 x 34 40 x 40 2 375 * 38 x 38t 36 x 36 41 x 41 2 600 RECTANGULAR A-0117 TNA * 12x18 10x16 15x21 2'/2 112 * 12x24 11x23 15x27 212 140 * 12x36 11 x35 15x39 2'/2 196 * 18x24 16x22 21 x27 2Y2 188 * 18x30 16x28 21x33 2'/2 230 * 24 x 36 22 x 34 26 x 38 2'/2 385 * 24 x 48' 22 x 46 27 x 51 2 450 ^� * 30 x 48 27 x 45 32 x 51 2'/2 530 t Grate Has Center Rib. Grate or Cover in Two Pieces. Note: Give Size and Plate Number When Ordering. All of Above Items Can Be Furnished with Lock Screws to Prevent Vandalism. * — signifies more favorable stock and volume production 3v I I I I 7 1 L 1000 900. 800 700 600 500 c 400 I S 350 300 c 0 J r 250 r O� J 200 F- 150 •s Tc' LIMITATIONS: 100 I, Maximum length = 1000 TC 90 2. Maximum area = 10 Acres 5 VI LL M r C E 1� C 0 `c u u 0 E • F SAN BERNARDNdO COUNTY TIME OF CONCENTRATION HYDROLOGY MANUAL NOMOGRAPH FOR INITIAL SUBAREA D- II FIGURE D -131 80 a. 70 H 6 Y w $ 500 60 °' • ^$ 300 c > .- c I6 I c goo 7 , N E O 5 100 E o 50 0 •- ` o "o so ° 8 a 40 30 CL � 9 r3 p e 10 6 Undeveloped 0 •. Good Cover 2 12 a 25 »- Undeveloped 0 c Fair Cover li 13 E s ,6 �14 c 20 Undeveloped 0 c .3 ` Zl 15 19 Poor Cover 1 o ,� 16 is Single Family 17 tv .. 17 16 (1/4 Acre) o� 18 15 � C (Paved) ai 90 ° u � 14 13 � _ L- H- To -K -Tc' 20 12 e � ` Zl_ 25 c l0 Pi Develol e 9 80 - APARTMENT 75 - MOBILE HOME 30 e 65 - CONDOMINIUM 40- SINGLE FAMILY- 1/2 ACRE LOT 7 20- SINGLE FAMILY- I ACRE LOT 35 10- SINGLE FAMILY- 2 1/2 ACRE LOT 6 40 EXAMPLE: 5 ( I ) L= 550, H= 5.0% K= Single Family (1/4 Ac.) Development, Tc =12.6 min. (2) L= 550, H= 5.0, K- Commercial 4 Development, Tc =9.7 min. VI LL M r C E 1� C 0 `c u u 0 E • F SAN BERNARDNdO COUNTY TIME OF CONCENTRATION HYDROLOGY MANUAL NOMOGRAPH FOR INITIAL SUBAREA D- II FIGURE D -131 4. `•I�11 II V. \ /M /.' / //. -, : 4' 17 � -w.. 1 _ -- __ - f : - 'ii + 1-4 L in - t_ „ t .111111111m 1 f-t : _ 4:,/ -I NI 181 PiiI Illiiii 11 - t J - f - -- 1 • Ma A t- t 1, 1 F mill mmillimi ,1 ,y- ■■ = ' C? 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P HYD ,PAD. � �3 �_ CD,M1 h Al TS `L er FLDy'i OF FM � � 1•C'o 0•0 \4*I coos %?, 0.1;80 FIX WIIHN GU71IR 5,tiu o.zo 3,�s' 0�3�88 24 lei 0,0801 0,1616 .20.za o.3b G.zr 0-sisb ('.co 0 -M7 oszsoo a�4,oz, o. 40 q.SO �.3�1 S• SOO o - 1331 p.Y.b03 109.40 O . 1 5', 12.00 .2.'1�"1l' 12.5 D. t"IT 0.3 &T • ; .. . 14 0 • Go �5 S9 3.$800 tto•�O 0.2410 0 3 �. M Zo4.57 ^ ; o 61 lA.ou. 5,0611 %8.`I p,2TB(o 0 g'1'F 1.03 4 4.00 o -S?-I 'Ito s ►w Mc- _ t 3 t 50 W Ott, ' fo UtD. Qira . 0.14' f E „ a.F i i fXAblPLf : G /!/fN, 0 or Cf5 FLLWAM i4 NI N 57QEE r Aft LWAVA1,01MAI ILIIPE 5� CAiCULATE 9 /gv AM HAW IF/IrAWMTE • DfPI11 HOW AND AEEA Of' Afft. U5E MPTH Of FLOW f0f CATCHBA3/N CALLS USE AIEA OF FLOW M� VELOCI ry Ca4LCS . i i 61WAI . 4:/0.5 CF5 - ST.PfET Sl tpf = g5-1. 0 3.0,005 GI L : 149.4) .: DEflf/ Of fLOW R 0, 60/ 4ffA OF FLOW= 3 5,A .'. V ° 2.11 ff5 34 t LIVE" p AK AV E, R/W W /07H �_ '/t �PDfl.11Y W/DTH 2 ' ° � 8 "CURS FACE 71= o o► s Ql S �L DEPTH dF FLDW WIDTtt OF FLM AZEA A 4 W P p HYD, M. p- ��3 1 COMMEN 1. IL6 0, 1�' yo • O ! V'% -Orl wrinin c:, -r2, g.,.+ 0.24' 3 ...7f 0.3116 t ` g.qs o.obO o•Igb6 7• .2 ? ®.10 (,'.26' • o.b►$b `,Ss' o•I p•2sroo E 3$.o47 o•ll 6•00 '. ► .3nr bi3� o• Is�4 v 2gtS' #4. o .�e' ti-s _ I . rgoo 9.90 0.1 s9C' c.2942� dt,9i1 ©, 5p� Ifi � 2 Ib.Su 0.1'i44 0.31 i1 i -, "4 o G1� �o' 4�'1� Zn•61 0.2310 o•31r.4 F%_.w Al CVL4110 � s'I._ 5 1S•,4SZ ®•0' 40' %192. 41 34 o.t683' 0.4165 F�.o� p.t.TC- ti o7h Sees IbSS•SM 0.91.. (04' 2.4-AV GSA,* o S l:yt, j I =' Z 1,4 X0.24' 3S 36