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<br />TEXAS STATE HIGHWAY DEPART"E!!T
<br />CURVE STANDARD FOR SUPERELEVATION,
<br />wiDENING 6 SPIRAL TRANSITIONS .'. .
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<br />SWC-39
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<br />c:ROSS SECT1CN AT"C"
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<br />c:ROSS SECTION 1lT'T1' ~
<br />REVOLVED ABOUT CENTER LINE
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<br />",., en." LIn.
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<br />SYMBOLS a FORMULAE
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<br />P.l- PtJd 01 ..,~ 01 1M mIJin fllfll''''',
<br />4- InI#t'SIC/Ion t1IIfM HtWHn ,,,. main"",,.,,,. 01'1>> en!,. CUIW.
<br />D. Degree of"" __,
<br />R- Radius tillh! cln:uI-" (;Un..
<br />E- Exllmtll of 11,. C;n2IltN ClJl'N.
<br />70S, a S7o'''_'Io SpitrJI'""" ~i:rJA 7"",..,~..........ptJ/n,,,, ""'- tIItIltIimI
<br />SC ac.s,.'5Itin1IIoCtJr""......~'" -:-".idof........""",_1PintI
<br />s.C.S.-"'sp/nJI", C".. 10 Sl:JnII~ ~tJnl1t.DI. I1DIfI/ of *d er!/ Hltnn/ng lIfIMihcn, 01 N'IIII tltln-
<br />,;IIf.v:al11Jn;ug/lDUl.
<br />. . Full ,u,.rMWllion ,., IDOl GI CfOftlt .it/lII,
<br />W- ToMI.xlnl rwtIening Ihtough I,. tltf:IJM, po,1iQn tJ/ 11:* cur~...
<br />8..TIIo.""",_.. L.DA!OD _"''''_'''''''''''11111>>__
<br />""" 'h. ""'rIM''''''' SC .,Cs.
<br />L..LdJI#Ih ", """" (or ".pI. III _oiNtJn "" __,1m ..... -.",-<rI-.l.
<br />L.r:.'S"",,,,,~.honItA_.. 7SIIJS,c,," S7 IIJC 5,
<br />x.. 0;.'''''''. 'rom ,.. T S. Ie "ptJ/n'" ,,.. mlJln ""',.., _Oil. II>> s.a . Ls- Cf)()ro u(BI)'.
<br />"'.R,,,., IIIIg/olfiv"",," ,.... "Pf'w,.", ''''''''''' _to '110 SC,. '" s.c.. X. bi...
<br />7..7_db..... ello7S",PlloS7.KI71(p r""IhIJJ
<br />7.7".90"''''_........
<br />K.o..,."..,rom". 7S, ",S7 "'"_..,,.. ,..,.., _i,.,,.. PC ",P7 111'.. dr.
<br />CUltN CUIW IH't'duc.,/- Xc.R 5mS. .
<br />p.C""II tI,,,,,,,.. of'.. ''''-'''''''''''"''''IImpI/l.,DODD0727fLs/() or "",...,.
<br />_/y V. It '
<br />E.-E.,.,r.tJ/of",., DlI$CIcmWCtlI. -ClpS<<4t
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<br /> USutll CnJwn WItt",
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<br />1bIIII-.oy -:t-1-- I - V--l""-"i -, c-n
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<br /> CROss SEC'TlON AT ')l'
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<br />...~ - '""" 1ibodloaJoc-n
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<br /> QIOSS
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<br />E!,,,,,itth PrMtmed CnJwn inn", "!lI1
<br />'in Ihl$ IIlSltIIIU. .LfJuI$ItM C""", Lull
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<br />s_ertlWn I~ ~ OJ
<br />()r '/II, $<<III'",'M WIN.,.. pall b. unlltmnly nJiull tlI 1M itJI Ctr1Im L_
<br />.m. "11. liS In. SlIf)er."VtllitJn b ,,"rodl/ud on I". r'l1HIintIe, t1f Ih, InlMllkn.UIttII an
<br />",elm.a plOM Ifflitm IS 1II1t1I".d tlI t"'. w;IIIIM tJiUIe,.. tI/JQ". lhe ~",., by 1M '<<M
<br />tlmounl as Ih. ntlnnol """". MIIII/.I supe,_ralion of in"., HgtI!lhDH Ib.n Hgln.
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<br />Elltnlnare Cr"",! A~ pimllltlte c""",
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<br />C 11I" 1M 'fIn>> tI. shtJrm atJrlM!
<br />,., 'R...,oed _ c"",", DETAILS FOR ATTAINING SUPERELEVATION
<br />I ~ I l;t I ,.
<br />:;:t=' I.... Sui1o_-m_IfI',..IIJ""""___""""""'___hllJ".__""..
<br />-.; I sa tmdcs. t1nd IIwougIJouI 1M CI~lIb,r:",,,.. s..r.lwalian ft1r-., PfJIII/tMI'" 6p1",,~#tIl~ C~=:!1Ii WWioV-
<br />, ..... - - ! twn ~i!.'! !!!# :lO#g,UlFiS aiivtm ~ ,xupI'!'cw.IW"'" C.,.,.,.. (J/cuna-",.lII1ItJII unlftHmpt1de.;,wNdI
<br />f=. ----.,..--~_ <rIM ".""'''' of I.. _..... _.~ '1fIH tire "'". P""""_IIto".,.. "dtiaJod'" _" :!!!!<,'"=;'
<br />SE.~ ~ '''''''J ..!"~:It!:! .iMwi,;,..... ar. ngNI,.,.",.",Ip'.""""MaGIIrIlS/olJe "f, inIMlJI/Nmltll,llI. plor.
<br />c:ROSS!IECTIlN AT"o. - 1M"",",,,.,,, "",,,.,m .11III1".__ "'mMJn"""""'"I1I11.'''__''''''
<br />-, -- -. """". "'_i,..bw4 ,,' pdnb r.t:'_b' "'"' """". _,.d by.,. otIi"'1IIIII/I
<br />REIIOLVED ABOUT INNER CROWN LINE ", _.., ,,,,..... Ih. 'i.1d f!ln dnI_J
<br />
<br />GENERAL NOTES
<br />AD c''''''' of ItI(!rtllhtJn roo' Ihllll be Nl"E~I#'~ ..r'IJ ",.n:.'5
<br />FfJr ClJfreI tII ?t"o' tftI "$' lPinII f1'tIfI.,iDns tIr. Nt ,~.d; IIt1tdwIr tiN
<br />.-. '" '.$/'," 2"O(f "'" _1iNd ..", 1tIimI. .no"". .._ 2D ,., f'''._J
<br />For",... wilh"""', ~ _". 1JtIded<qually "'",. ...1tIo """ __ of ,..__,
<br />FtN airel wi"." IPirtlls, 'lie rWJening sIH1H H DddH ID 1M insIt* of "" pt1~
<br />erIB ",.., shtlIIlllwys b.lJ/tlClId ItJ dillid# IIIe ptJrflHm <<1ua11,y N/wHIt I,. ITaffie 1rJne,.
<br />~ widMI/If can """JilitJns shtJIJ be,m al,,,. rs. ",111 RTD.'''''''lllCreDU IJIIiftNmly ID II t11(16imum t1I
<br />lhe sa fir SC.S..IIJIlH ,Mntlin CGn$ltIIII ItTtNgbaul lhe t:imJIw I1OTI"", DI 1M CIIN tIIId dminM /0 HnJ tit
<br />IItoS,T.
<br />In CD?,trut:rIn, fMlItt1III"- wltillrngDtt th. tlIII'- "'8PinII<<I r:u'~1.11I6 trJ/lglllltJU'"* ... tII,,,.
<br />pt1NmMJI sNIII ~ .,/sIded t1IId tIdjuJI<<J 11I10 11M r;."". of lhe ""tIMed spirtJ/1tJ tWOtd tI ,ft'eT5t1I of
<br />CuIYtlIU,. """ Ih. T S
<br />Cur~, fer whtt:h SI1itr1I IftJll$JllD/U In ntJI prtwided shall /J(JII' Ih, .UlJNeltlrtJlltJn _d rRdMin, inIr<<AJc-
<br />.d .,. ,,,. smn, mt/IIfIM tIIId Ot1r'IIe ItJm. "'ngIh D$ /1', In'wred /eltfJt1f$ Qf ._ ~ in". ~,"
<br />A V'.,"'" ,'- ,/tQJJ H 1/$111 tin flII""~IId currfJ.exC4!pl fIN rl(Jlt/ ~ lIII r.1'~$ ",
<br />r!C' art1 .'1. wIHN, lite nonntII ptWIINnf c,,.,, SIIi1IIIW "'amed. eMs.J """,.. prtJIIi(Md;, 1M p/tJM
<br />Th, ,,;,JIll tJ/ "tltle kine. 0/1 CUne, shtJlllI(JI be leu IIIon IC1, It. tJr t2'1JS gtfIWI in ,''- ttIbI.. IIN lhe
<br />nq<<I,", _9TH. 0/ Cllrre. ~1I11 0/ Ihe ntJrmQl pt/W/IIMnt widlll
<br />F(Jr IX/reIHnl, WIth ItDmH1I J,.,. ,"dills 0112' ty me,.. WI*,,"'I in ',/lC.I, II/11M tlMmtJI "". _1tJ111
<br />I. IJIJ/ requl,.d ,bul may b" IISHlf condJliDn. W(J""",.
<br />r". 'Drrtll MngtI:. J/',-" In Tabl" I aid 2 tIT, D~/t!r'1Id letllJlh. tIIId Dr, btlsu till tin tlCC.',rafitJn
<br />MI, tJI 2 'HI Pi" l<<tJId"., NCDI.d 10avrd ,,,,, c~n'~ tJI Ih. &1I"..lIItItIifi<</ 10 "SlneIIM Fl. 01",.
<br />tJCIIJJtM crtJIfn line III II ,1tJu oil/2$() rnlh respect 10 lhe eM/.,.". graft. (".""""", t1IJtJuI 1M t:eIIIe,-
<br />1m.) 7M ,,.,, tnfJlll , Dflum<</ O. 38'/0' TDIIM. Dnd 3d /", TtI" 2 and _ t:T(Jfm ~ liS .JotJp" fl.
<br />Wh~,~ ,rll1tl''''''IIQII{)'I'J "IIOIm tI/Jt1UI ,~ m.r cr""n ,,,,.,,,,, ""'.,,1IfI "1/III"litJn Iaglhl "I'M In
<br />lhe TDlnJ "'tlIIP/NCAIIIJlllely Ct1<<Kt; 110".,." I~ IIfHISlllQII lengllllhDII ,. sut:II IIItII '''' $/tJptI O/Ihe FlU
<br />of ,,,. cul.id. r;'i)rm WlI,. 't'$peellr file illS. crown.1N1I noI.<<ft(J 1/150.
<br />MiM,,,,,,,, $:/" tlh<<f", n.lles w, 1Iuf". Vf5hfe,O.I$)
<br />,Oft SPlh&L UNIT", TO II: USE:D ON THIS "IOolECT AND OTtel Df.NTI1T1Na DATA
<br />11:1'1:" TO "lU-PItOrIU SHlU, OR TO TNI' TYPICAL CRass SlCTIOJI IlCEl.
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<br />
<br />TABLE 2 FEEDER ROADS
<br />LII.lpl_I-I-1
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<br />J,.
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<br />EllnIIIItIle ~f Crown tHlI~"'"
<br />III IhI, disltJllCtI
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<br />
<br />SUPERELEVATION WICENING a SPIRAL TABLES
<br />.
<br />TAflLE I PHIMAkY HIGHWAYS
<br />D mlLII. ; 'j( Xc
<br />
<br />Yo
<br />
<br />
<br />LAYOUT OF CURVE
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<br />r,.J(~ T'l!I..t1tI~
<br />X.
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