part 1025 rail track geometry

8/13/2019 Part 1025 Rail Track Geometry

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Revision: Issue 2 07/10/08 Specification: Part 1025 Track Geometr

PART 1025

TRACK GEOMETRY

This Part is PTSOM's Code of Practice, Volume 2 Train System (CP2) "Trac !eometry" CPTS#$%

CONTENTS

1!0 Purpose an" Scope2!0 #esi$n an" Ratin$ %roa" Gau$e&!0 #esi$n an" Ratin$ Stan"ar" Gau$e'!0 Track Geometr Re(uirements for )onstruction5!0 *onitorin$ an" *aintenance+!0 #ocumentation

1.0 PURPOSE AND SCOPE

1.1 PURPOSE

T,e purpose of t,is part is to set stan"ar"s to ensure t,at:a- t,e construction an" maintenance of tracks is carrie" out .it,in safe $eometric imits

- e3cessive acceeration forces on roin$ stock s,a e imite" an" ,ence ensure passen$er comfort isnot compromise"

c- train movements are not su4ecte" to e3cessive traction re(uirements eon" current capacit i!e!t,e imit $ra"es etc!-

"- track forces .,ic, ma cause e3cessive track maintenance are imite"!

1.2 PRINCIPLES

T,is part compies .it, t,e principes set out in t,e 6)o"e of Practice for t,e #efine" Interstate Rai

et.ork6 voume ' part 2 section 5!

1.3 SCOPE

T,is part specifies $enera proce"ures for:a- t,e "esi$n/ratin$ of track $eometr incu"in$ track $au$e tan$ent track en"s ,ori9onta curves

$au$e .i"enin$ cant ma3imum ve,ice ine spee" transition curves $ra"ients an" vertica curves

- t,e "etermination of ao.ae track con"ition an" imitin$ ve,ice spee"s "urin$ construction or reconstruction of tracks

c- t,e monitorin$ an" maintenance of track $eometr

"- t,e "etermination of ao.ae ve,ice track spee"s .,en t,e track fas eo. t,e minimumcon"ition consi"ere" safe for operation at fu ine spee"!

1.4 REFERENCES

1!'!1 In"ustr co"e of practice)o"e of Practice for t,e #efine" Interstate Rai et.ork voume ' Track )ivi an" ;ectricaInfrastructure- part 2 Infrastructure Principes- section 5: Track $eometr

1!'!2 PTS


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2.0 DESIGN AND RATING ) *ROAD GAUGE

2.1 GENERAL

a- T,e aim of t,e track ai$nment "esi$n s,a e to ao. trains to maintain t,e ma3imum spee" for t,etraffic operatin$! T,is is $enera est ac,ieve" minimi9in$ t,e $ra"e an" curvature of t,e track!

- ;3cept as provi"e" for ese.,ere in t,is part t,e parameters $iven in Tae 2!1 s,a e a"opte":Ta+,$ 2.1- Ma&" %a,"$ 'f !ra# ara$!$r

PARAMETER MAIMUMALLOA*LE

1 ?ctua cant:

.,ere rais are continuous .e"e" an" curves are proper transitione" e3cept atpatforms-

.,ere rais are not continuous .e"e" or curves are not proper transitione"e3cept at patforms-

at patforms an" roa" crossin$s

on "iver$in$ route of conventiona/tan$ent turnouts

1&0mm

=0mm

50mm

i

2 ?ctua ne$ative cant on appies to "iver$ent routes over contrafe3ure turnouts at spee"sup to 25km/,- 20mm

& )ant $ra"ient 1:'00

' )ant "eficienc @see sucause 2!'!&c- an" cause 2!'!5A

.,ere rais are continuous .e"e" an" curves are proper transitione" e3cept atpatforms-!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

.,ere rais are not continuous .e"e" or curves are not proper transitione"e3cept at patforms-!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

at patforms an" roa" crossin$s!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

on "iver$in$ route of conventiona/tan$ent turnouts!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

,ori9onta en"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

100mm

70mm

'0mm

100mm

'0mm

5 )ant e3cess ne$ative "eficienc- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!80mm

+ Rate of c,an$e of cant "eficienc e3cess cant or actua cant @see para$rap, 2!'!'e-2-A:

pain track

on "iver$in$ route of conventiona/tan$entia turnouts &=mm/sec

&=mm/sec

7 Bori9onta en" an$e 1C 50D

8 Bori9onta curve ra"ius See note @1A

= Eertica curve ra"ius see cause 2!10!&-

10 Gra"e compensate"- 1 in '5

11 omina spacin$ of ve,ice o$ies 17!5

ote @1A: T,ere is no ma3imum ao.ae ra"ius ,o.ever t,e minimum ao.ae ra"ius on main ines F 200 m!

2.2 TRACK GAUGE

a- Gau$e s,a e measure" in mm et.een t,e insi"e face of t,e rais 1+ mm eo. t,e top surface!

- T,e nomina track $au$e of PTS


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2.3 TANGENT TRACK

Tan$ent track s,a e ai" an" measure" et.een t,e tan$ent points of curves points an" crossin$s or t,e

en"s of t,e ine! In $enera tan$ent track s,a e ai" an" maintaine" eve across t,e rais! ;3ceptions

to t,is rue occur at t,e approac, to untransitione" curves .,ere ,af t,e cant is appie" on t,e tan$ent

track an" t,e ot,er ,af on t,e curve!

2.4 ORIONTAL CUR6ES

2!'!1 Ra"ius

T,e ra"ius of a curves s,a e e3presse" in metres!

2!'!2 *inimum ra"ius

a- T,e minimum ra"ius of curve for e3istin$ runnin$ ines s,a e 200 m or 800 m for a ne. .ork!

a- T,e minimum ra"ius of curve to e use" aon$si"e apassen$er patform s,a e 800 m for a ne. .ork!

c- T,e minimum ra"ius of curve to e use" on si"in$s s,a e 1'0 m!

"- o concave curves to e ao.e" t,rou$, patforms

2!'!& #efinitions:

a- T,e actua cant is t,at .,ic, is appie" to t,e curve in practice!

- T,e e(uiirium cant is t,e t,eoretica cant at .,ic, t,e resutant of t,e centrifu$a force an" t,evertica force "ue to t,e mass of t,e ve,ice is perpen"icuar to t,e top pane across t,e track at t,ema3imum ve,ice "esi$n spee"!

c- T,e cant "eficienc is t,e amount .,ic, t,e actua cant .ou" ,ave to e increase" to e(ua t,ee(uiirium cant! ;3cept as provi"e" for in cause 2!+!2 cant "eficienc s,a not e3cee" 80 of t,eactua cant!

e&uilirium cant actual cant cant deficiency

"- e$ative cant is .,ere t,e insi"e rai on a curve is ,i$,er t,an t,e outsi"e rai an" is to e avoi"e".,ere possie ut ma occur on a contrafe3ure turnout .,ere t,e .,oe turnout is cante" to favourt,e main runnin$ ine an" t,us puts a ne$ative cant on t,e ot,er e$ of t,e turnout! T,e ma3imumne$ative cant s,a e 20 mm .it, a ma3imum spee" of 25 km/,! ?ove 25 km/, no ne$ative cantis to e use"! T,e cant on t,e main runnin$ ine ma ,ave to e re"uce" in or"er to keep t,e

ne$ative cant .it,in t,ese imits!

2!'!' )ant an" spee" an e3panation

a- H,en a rai passen$er ve,ice enters a curve centrifu$a force acts on t,e ve,ice an" anpassen$ers insi"e! T,is force is proportiona to t,e s(uare of t,e spee" of t,e ve,ice an" inverseproportiona to t,e ra"ius of t,e curve! ?t mo"erate eves of operation centrifu$a force ,as noeffect on safet ut can affect t,e comfort of passen$ers! To counter t,e effects of centrifu$a forceon passen$ers cant is appie" to t,e curve o.erin$ t,e insi"e rai an" raisin$ t,e outsi"e rai e(ua amounts!

- or a train travein$ at a "ifferent spee" t,an t,at use" to cacuate t,e cant t,ere s,a e an6e3cess cant6 if t,e train is travein$ too so. or a 6cant "eficienc6 if t,e train is travein$ too fast!

c-


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2!'!5 *a3imum ao.ae actua cant an" cant "eficienc

;3cept as provi"e" for in sucause 2!+!2a- t,e ma3imum ao.ae actua cants an" cant "eficienciesare as s,o.n in Tae 2!1 ines 1 an" '-:

2!'!+ )ant / spee" reations,ip

a- T,e ve,ice "esi$n spee" s,a e t,e ma3imum spee" t,at trains s,a not norma e3cee"!

- T,e ma3imum ao.ae ve,ice "esi$n spee" for an curve s,a e "etermine" t,e formua ini$ure 2!1! H,ere 6E6 e3cee"s t,e ma3imum ao.aeine spee" t,e ine spee" s,a e use" an"cants recacuate" accor"in$!

F&7"r$ 2.1- D$!$r&na!&'n 'f $$(

E F 0!27+ ; ! R(

.,ere:

E F *a3imum ao.ae ve,ice spee" for curve in km/,

;(F ;(uiirium cant in mm F ;a J ;"

;a F ?ctua cant in mm

;" F )ant "eficienc in mm

R F Ra"ius of t,e curve in metres

c- T,e cant t,at ma e appie" to a curve s,a e "etermine" t,e formuae in i$ure 2!2:

F&7"r$ 2.2- D$!$r&na!&'n 'f #an!

1- T,e e(uiirium cant is cacuate" as foo.s:

;(F 1&!1 KEL

R

.,ere

;(F ;(uiirium cant in mm

E F Ee,ice "esi$n spee" in km/, R F Ra"ius of curve in metres

2- T,e actua cant is cacuate" as 55 of t,e e(uiirium cant!

&- If t,is e3cee"s t,e vaue s,o.n in )ause 2!'!5 for t,e ocation t,en "etermine t,e ma3imumao.ae e(uiirium cant an" t,en cacuate t,e ma3imum ao.ae ve,ice "esi$n spee" as inpara$rap, 2!'!+-!

2.5 *ENDS

2!5!1


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2!5!2 ?o.ae ma3imum spee" t,rou$, a en"

T,e ao.ae ma3imum spee" t,rou$, a en" s,a e as s,o.n in i$ure 2!&:

F&7"r$ 2.3- Ma&" a,,'8a+,$ $$( !9r'"79 a +$n(

E F 2!0= K;" %

*

.,ere: E F *a3imum ao.ae ve,ice "esi$n spee" in km/,

;"F ao.ae cant "eficienc in mm

% F o$ie centres of roin$ stock in metres

*F an$e et.een t.o tan$ent tracks in "e$rees


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1- O F 0!00'+!;a!E

2- O F 0!00'+! ;"!E

&- O F 0!'! ;a

- ?"opt a ,i$,er cant "eficienc t,an t,at specifie" in causes 2!'!5 an" 2!'!+ up to ut not e3cee"in$t,e actua cant!

c- ?"opt a s,orter transition t,an cacuate" ut commence cantin$ t,e track efore t,e commencementof t,e transition an" increase t,e cant in accor"ance .it, para$rap,s 2!+!1c- or 2!+!2- unti t,efu cant is appie"! T,e "istance over .,ic, t,e cant is increasin$ s,a e smmetrica .it, t,e"istance over .,ic, t,e track is transitione"!

2!+!& )urves .it,out transitions an" 6virtua6 transitions

If it is not possie to app an transition at a t,e foo.in$ action s,a e consi"ere"! %et.een .,ent,e first o$ie of a o$ie ve,ice enters a curve an" t,e secon" o$ie enters t,e curve t,e ve,ice$ra"ua takes up circuar motion! T,is is t,e 6virtua transition6 an" is e(ua in en$t, to t,e o$iecentres!


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a- )acuations invovin$ cant s,a use t,e "ifference in cant et.een t,e t.o ra"ii!

- )acuations invovin$ cant "eficienc s,a use t,e "ifference in cant "eficienc for t,e t.o ra"ii!

c- T,e cant an" spee" s,a e "etermine" for eac, curve in"ivi"ua!

"- T,e en$t, of transition et.een t,e t.o curves s,a e "erive" from t,e formuae in i$ure 2!'

mo"ifie" as foo.s:

1- O F 0!0072!;a1 ;a2-!E

2- O F 0!0072!;"1 ;"2-!E

&- O F 0!'!;a1 ;a2-

2!+!5 Reverse curves

In reverse curves transitions et.een "ifferent ra"ii of t,e reverse curve s,a use t,e same criteria as for

a simpe curve .it, t,e foo.in$ variations:

a- )acuations invovin$ cant s,a use t,e sum of t,e cants for t,e t.o ra"ii!

- )acuations invovin$ cant "eficienc s,a use t,e sum of t,e cant "eficiencies for t,e t.o ra"ii!


"- T,e en$t, of transition et.een t,e t.o curves s,a e "erive" from t,e formuae in i$ure 2!'

mo"ifie" as foo.s:

1- O F 0!0072!;a1 ;a2-!E2- O F 0!0072!;"1 ;"2-!E&- O F 0!'!;a1 ;a2-

2.; LENGTS OF STRAIGTS AND CUR6ES

or a ne. .ork:

a- %et.een simiar fe3ure curves a transition s,ou" e provi"e"!

- %et.een contrafe3ure curves a strai$,t of minimum en$t, s,ou" e provi"e" e(ua to t,e on$est

o$ie centres of roin$ stock in use 17!5 m-! Bo.ever t,e minimum en$t, of strai$,t ma e

re"uce" at crossovers!

c- )ircuar an" transition curves s,ou" ,ave a minimum en$t, of 20 m!

"- T,e cant $ra"ient s,ou" e not ess t,an 20 m on$ incu"in$ et.een curves in a compoun" curve!

2.< GEOMETRIC DESIGN DOCUMENTATIONT,e "esi$n "etais pertainin$ to t,e current "esi$n s,ou" e maintaine" an" s,ou" incu"e:

a- Surve coor"inates an" "atums if avaiae

- Oocation "etais enc, marks tan$ent spira spira curve vertica curves c,an$es in $ra"e-

c- )urvature

"- Oen$t, of curves

e- Gra"ient

f- )ant an" cant "eficienc

$- *a3imum ao.ae spee"

,- Transition en$t,

i- )ant $ra"ient!

Refer sampe $eometric "ra.in$s NNN NN NNN NN!

2.= POINTS AND CROSSINGS

T,e "etermination of t,e ma3imum ao.ae ve,ice "esi$n spee" t,rou$, curves in points an" crossin$ss,a e ma"e usin$ t,e stan"ar"s specifie" in susections 2!' an" 2!5! In particuar .,ere strai$,ts.itc,es are use" t,e stan"ar"s in susection 2!5 en"s- s,a e use"! or curves in points an"crossin$s .it,out cant or transitions t,e stan"ar"s in cause 2!+!&- s,a e use"! Turnouts s,ou" eocate" on tan$ent track .,ere possie!


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2.10 GRADIENTS

2!10!1 *a3imum ao.ae $ra"ients

a- H,en most of t,e e3istin$ tracks .ere uit t,e $ra"ients .ere e3presse" in t,e form 61 in 36 .,ere

3 is a rationa numer an" cannot e converte" to t,e a$e form .it,out t,e use of an irrationa

numer! It s,a e permissie to use ot, forms!

- T,e ma3imum $ra"ient on e3istin$ runnin$ ines of PTS


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c- Recommen"e" preferre" up$ra"e stan"ar" e3istin$ corri"or-! ?cceptae if #esirae is not ac,ievae"ue to si$nificant p,sica constraint!

"- ;3ceptiona for ra!&n7of e3istin$ infrastructure on uness prior approva otaine" "ue to si$nificantp,sica constraint!

e- ;3cept as provi"e" for ese.,ere in t,is part t,e parameters $iven in Tae &!1 s,a e a"opte"!

Ta+,$ 3.1- 6a,"$ 'f !ra# ara$!$r

Para$!$rD$&ra+,$>Tar7$!?

R$#'$n($(>A##$!a+,$?

E#$!&'na,

'r&@'n!a, 7$'$!r

*inimum Ra"ius R!min- m 1+00 '50 200

*inimum Ra"ius Patforms- m Strai$,t 800

%o$ie )entres c- m 17!5 17!5

*a3! ?ppie" )ant


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3.4 ORIONTAL CUR6ES

&!'!1 Ra"ius

T,e ra"ius of a curves s,a e e3presse" in metres!

&!'!2 *inimum ra"ius

a- T,e minimum ra"ius of curve for e3istin$ runnin$ ines s,a e 200 m- T,e minimum ra"ius of curve for a ne. corri"or .ork s,a e 1 +00 m! T,e minimum ra"ius for

e3istin$ corri"or up$ra"es s,a e '50 m!

- T,e minimum ra"ius of curve to e use" aon$si"e apassen$er patform s,a e 800 m for a ne. .ork!

c- T,e minimum ra"ius of curve to e use" on si"in$s s,a e 1'0 m!

&!'!& #efinitions:

a- T,e actua cant is t,at .,ic, is appie" to t,e curve in practice!

- T,e e(uiirium cant is t,e t,eoretica cant at .,ic, t,e resutant of t,e centrifu$a force an" t,evertica force "ue to t,e mass of t,e ve,ice is perpen"icuar to t,e top pane across t,e track at t,ema3imum ve,ice "esi$n spee"!

c- T,e cant "eficienc is t,e amount .,ic, t,e actua cant .ou" ,ave to e increase" to e(ua t,e

e(uiirium cant! ;3cept as provi"e" for in cause &!+!2 cant "eficienc s,a not e3cee" 80 of t,eactua cant!

e&uilirium cant actual cant cant deficiency

"- e$ative cant is .,ere t,e insi"e rai on a curve is ,i$,er t,an t,e outsi"e rai an" is to e avoi"e".,ere possie ut ma occur on a contrafe3ure turnout .,ere t,e .,oe turnout is cante" to favourt,e main runnin$ ine an" t,us puts a ne$ative cant on t,e ot,er e$ of t,e turnout! T,e ma3imumne$ative cant s,a e 20 mm .it, a ma3imum spee" of 25 km/,! ?ove 25k m/, no ne$ative cantis to e use"! T,e cant on t,e main runnin$ ine ma ,ave to e re"uce" in or"er to keep t,ene$ative cant .it,in t,ese imits!

&!'!' )ant an" spee" an e3panation

a- H,en a rai passen$er ve,ice enters a curve centrifu$a force acts on t,e ve,ice an" anpassen$ers insi"e! T,is force is proportiona to t,e s(uare of t,e spee" of t,e ve,ice an" inverse

proportiona to t,e ra"ius of t,e curve! ?t mo"erate eves of operation centrifu$a force ,as noeffect on safet ut can affect t,e comfort of passen$ers! To counter t,e effects of centrifu$a forceon passen$ers cant is appie" to t,e curve o.erin$ t,e insi"e rai an" raisin$ t,e outsi"e rai e(ua amounts!

- or a train travein$ at a "ifferent spee" t,an t,at use" to cacuate t,e cant t,ere s,a e an6e3cess cant6 if t,e train is travein$ too so. or a 6cant "eficienc6 if t,e train is travein$ too fast!

c-


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f- ),an$es in unaance" atera acceeration are use" some rai operators as a "esi$n re(uirementfor cacuation of acceptae cant "eficienc an" c,an$e in cant "eficienc! T,e vaues for cant"eficienc an" rate of c,an$e of cant "eficienc in Tae &!1 .ere seecte" to provi"e vaues forunaance" atera acceeration an" rate of c,an$e of unaance" atera acceeration simiar to t,atuse" in t,e Ro? an" PQR#!

&!'!5 *a3imum ao.ae actua cant an" cant "eficienc;3cept as provi"e" for in sucause &!+!2a- t,e ma3imum ao.ae actua cants an" cant "eficienciesare as s,o.n in Tae &!1 ines 1 an" '-!

&!'!+ )ant / spee" reations,ip

a- T,e ve,ice "esi$n spee" s,a e t,e ma3imum spee" t,at trains s,a not norma e3cee"!

- T,e ma3imum ao.ae ve,ice "esi$n spee" for an curve s,a e "etermine" t,e formua ini$ure &!'!+a-! H,ere 6E6 e3cee"s t,e ma3imum ao.aeine spee" t,e ine spee" s,a e use"an" cants recacuate" accor"in$!

F&7"r$ 3.4.:>a?- D$!$r&na!&'n 'f $$(

E F 0!2=1 ; ! R(

.,ere:

E F *a3imum ao.ae ve,ice spee" for curve in km/,;(F ;(uiirium cant in mm F ;a J ;"



R F Ra"ius of t,e curve in metres

c- T,e cant t,at ma e appie" to a curve s,a e "etermine" t,e formuae in i$ure &!'!+-!

F&7"r$ 3.4.:>+?- D$!$r&na!&'n 'f #an!

1- T,e e(uiirium cant is cacuate" as foo.s:

;(F 11!8' KEL

R

.,ere

;(F ;(uiirium cant in mm

E F Ee,ice "esi$n spee" in km/,

R F Ra"ius of curve in metres

2- T,e actua cant is prefera cacuate" as 55 of t,e e(uiirium cant!

&- If t,is e3cee"s t,e vaue s,o.n in )ause &!'!5 for t,e ocation t,en "etermine t,e ma3imumao.ae e(uiirium cant an" t,en cacuate t,e ma3imum ao.ae ve,ice "esi$n spee" as inpara$rap, &!'!+-!

3.5 *ENDS&!5!1


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&!5!2 ?o.ae ma3imum spee" t,rou$, a en"

T,e ao.ae ma3imum spee" t,rou$, a en" s,a e as s,o.n in i$ure &!5!2!

F&7"r$ 3.5.2- Ma&" a,,'8a+,$ $$( !9r'"79 a +$n(

E F 2!20& K;" %

*

.,ere: E F *a3imum ao.ae ve,ice "esi$n spee" in km/,

;"F ao.ae cant "eficienc in mm

% F o$ie centres of roin$ stock in metres

*F an$e et.een t.o tan$ent tracks in "e$rees


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F&7"r$ 3.:.1>+?- L$n7!9 'f !ran&!&'nB f'r $&!&n7 #'rr&('r "7ra($ 8'r

T,e en$t, of transition on an curve s,a e t,e ,i$,est vaue of t,e resuts of t,e foo.in$ t,ree

cacuations:

1- O F 0!007=!;a!E

2- O F 0!007=!;"!E

&- O F 0!'! ;a

.,ere O F Transition en$t, in metres



E F *a3imum ao.ae ve,ice "esi$n spee" in km/,

If t,e t,eoretica transition en$t, is ess t,an 20 m or t,e s,ift is ess t,an 10 mm @see cause -A no

transition s,a nee" to e appie"!

&!+!2 Transitions of restricte" en$t,

In certain circumstances it ma not e possie to app t,e stan"ar" transition en$t,s as cacuate" fromcause &!+!1c-! If so t,e aternative soutions in "escen"in$ or"er ma e:

a- ?"opt a $reater rate of c,an$e of cant t,an t,at specifie" in cause &!+!1c-! Qn"er no circumstancess,a t,is vaue e3cee" 55 mm/sec! @see para$rap, &!'!'e-2-A an" a"optin$ it t,e formuae ini$ure &!' are mo"ifie" as foo.s:

1- O F 0!0050!;a!E

2- O F 0!0050! ;"!E

&- O F 0!&&! ;a

- ?"opt a ,i$,er cant "eficienc t,an t,at specifie" in causes &!'!5 an" &!'!+ up to ut not e3cee"in$t,e actua cant!

c- ?"opt a s,orter transition t,an cacuate" ut commence cantin$ t,e track efore t,e commencementof t,e transition an" increase t,e cant in accor"ance .it, para$rap,s &!+!1c- or &!+!2- unti t,efu cant is appie"! T,e "istance over .,ic, t,e cant is increasin$ s,a e smmetrica .it, t,e"istance over .,ic, t,e track is transitione"!

&!+!& )urves .it,out transitions an" 6virtua6 transitions

If it is not possie to app an transition at a t,e foo.in$ action s,a e consi"ere"! %et.een .,ent,e first o$ie of a o$ie ve,ice enters a curve an" t,e secon" o$ie enters t,e curve t,e ve,ice$ra"ua takes up circuar motion! T,is is t,e 6virtua transition6 an" is e(ua in en$t, to t,e o$iecentres!


14/25


F&7"r$ 3.:.3>a?- C"r%$ #an!$( +"! n'! !ran&!&'n$(

E F 0!2=1 ; ! R( see i$ure &!'!+a--

%ut if ;(F ;a J;" F 2 3 ;a t,en E F 0!2=1 2!;a!R

rom t,e transition formua O F 17!5 m- F 0!007=!; "!E

T,erefore e(uatin$ E from t,e t.o formuae:

0!2=1 2!;a!R F 17!5 M 0!007=!;"

;a F;"F @&2+!7 M R& A

;N?*PO;: If R F 200 m ;a F;"F @&2+!7 M 200& A F 5+!0 mm

T,en E F 0!2=1 ; ! R( F '&!7 km/,

- If t,e curve is uncante" an" .it,out transition t,e ma3imum ao.ae ve,ice "esi$n spee" s,a

e "etermine" usin$ t,e ma3imum ao.ae cant "eficienc for t,e curve! T,e ma3imum cant

"eficienc is specifie" in Tae &!'!+a--! T,e cant "eficienc is assume" to ui" up over t,e virtuatransition an" s,a nee" to e c,ecke" to ensure t,at it "oes not e3cee" t,e ao.ae cant $ra"ient!

T,e cacuation of t,e cant an" spee" s,a e as in i$ure &!+!&-!

F&7"r$ 3.:.3>+?- C"r%$ "n#an!$( an( n'! !ran&!&'n$(

E F 0!2=1 ; ! R( see i$ure &!'!+a--

rom t,e transition formua O F 17!5m- F 0!007=!; "!E

T,erefore e(uatin$ E from t,e t.o formuae:

0!2=1 ; ! R( F 17!5 M 0!007=!;"

In t,is case ;( F ;"t,erefore ;" F @&8'!7 M R& A

;N?*PO;: If R F 200m ;" F @&8'!7 M 200& A F +5!=mm

T,en E F 0!2=1 ; ! R( F &&km/, A

&!+!' )ompoun" curves

In compoun" curves transitions et.een "ifferent ra"ii of t,e compoun" curve s,a use t,e same criteria

as for a simpe curve .it, t,e foo.in$ variations:

a- )acuations invovin$ cant s,a use t,e "ifference in cant et.een t,e t.o ra"ii!

- )acuations invovin$ cant "eficienc s,a use t,e "ifference in cant "eficienc for t,e t.o ra"ii!


"- T,e en$t, of transition et.een t,e t.o curves s,a e "erive" from t,e formuae in i$ure &!5!2

mo"ifie" as foo.s:

1- O F 0!007=!;a1 ;a2-!E

2- O F 0!007=!;"1 ;"2-!E

&- O F 0!'!;a1 ;a2-

&!+!5 Reverse curves

In reverse curves transitions et.een "ifferent ra"ii of t,e reverse curve s,a use t,e same criteria as for

a simpe curve .it, t,e foo.in$ variations:

a- )acuations invovin$ cant s,a use t,e sum of t,e cants for t,e t.o ra"ii!

- )acuations invovin$ cant "eficienc s,a use t,e sum of t,e cant "eficiencies for t,e t.o ra"ii!



15/25


"- T,e en$t, of transition et.een t,e t.o curves s,a e "erive" from t,e formuae in i$ure &!5!2

mo"ifie" as foo.s:

1- O F 0!007=!;a1 ;a2-!E

2- O F 0!007=!;"1 ;"2-!E'- O F 0!'!;a1 ;a2-

3.; LENGTS OF STRAIGTS AND CUR6ES

or a ne. .ork:

a- T,e "esirae minimum en$t, of strai$,ts an" curves for a ne. .orks s,a e t,e $reater of 50 or

E/2 metres!

or a rene.a or up$ra"e .ork:

a- %et.een simiar fe3ure curves a transition s,ou" e provi"e"!

- %et.een contrafe3ure curves a strai$,t of minimum en$t, s,ou" e provi"e" e(ua to t,e on$est

o$ie centres of roin$ stock in use 17!5 m-! Bo.ever t,e minimum en$t, of strai$,t ma e

re"uce" at crossovers!

c- )ircuar an" transition curves s,ou" ,ave a minimum en$t, of 20 m!

"- T,e cant $ra"ient s,ou" e not ess t,an 20 m on$ incu"in$ et.een curves in a compoun" curve!

3.< GEOMETRIC DESIGN DOCUMENTATIONT,e "esi$n "etais pertainin$ to t,e current "esi$n s,ou" e maintaine" an" s,ou" incu"e:

4- Surve coor"inates an" "atums if avaiae

k- Oocation "etais enc, marks tan$ent spira spira curve vertica curves c,an$es in $ra"e-

- )urvature

m- Oen$t, of curves

n- Gra"ient

o- )ant an" cant "eficienc

p- *a3imum ao.ae spee"

(- Transition en$t,

r- )ant $ra"ient!Refer sampe $eometric "ra.in$s NNN NN NNN NN!

3.= POINTS AND CROSSINGS

T,e "etermination of t,e ma3imum ao.ae ve,ice "esi$n spee" t,rou$, curves in points an" crossin$ss,a e ma"e usin$ t,e stan"ar"s specifie" in susections &!' an" &!5! In particuar .,ere strai$,ts.itc,es are use" t,e stan"ar"s in susection &!5 en"s- s,a e use"! or curves in points an"crossin$s .it,out cant or transitions t,e stan"ar"s in cause 2!+!&- s,a e use"! Turnouts s,ou" eocate" on tan$ent track .,ere possie!

3.10 GRADIENTS

&!10!1 *a3imum ao.ae $ra"ients

a- H,en most of t,e e3istin$ tracks .ere uit t,e $ra"ients .ere e3presse" in t,e form 61 in 36 .,ere

3 is a rationa numer an" cannot e converte" to t,e a$e form .it,out t,e use of an irrationa

numer! It s,a e permissie to use ot, forms!

- T,e ma3imum $ra"ient on e3istin$ runnin$ ines of PTS


16/25


;N?*PO;: on a 2!22 1in '5- $ra"ient on a curve of 200 m ra"ius t,e $ra"ient .ou" e re"uce"

to 1!72 1 in 58- on a nonuricate" curve or 1!=7 1 in 51- on a uricate" curve!

-


17/25


4.2 NE CONSTRUCTION TOLERANCES

)onstruction of ne. .orks incu"in$ rene.as .,ere ne. seepers an" rai are instae" s,a comp.it, t,e toerances $iven in Tae '!2! H,ere materias are reuse" particuar for reuse of rai t,etoerances s,a e as $iven in section '!&!

Ta+,$ 4.2- T',$ran#$ f'r n$8 #'n!r"#!&'n

G$'$!r M$a"r$ C'n!r"#!&'n

Ga"7$-

*easure" in fie"

Eariation in 2m

J'mm &mm

'mm

L&n$ !an7$n! an( #"r%$ >$#,"(&n7 !ran&!&'n?

*i" or"inate "eviation from "esi$n in 10m c,or" en$t, 5mm

A,&7n$n!

Eariation from surve monuments

Eariation et.een a"4acent surve monuments

Eariation from "esi$n at patforms 6J6 is a.a frompatform-

15mm

10mm

J10mm 5mm

T8&! ra!$ 'f #9an7$ 'f #an! >$#,"(&n7 !ran&!&'n? 1 in 700

T8&! ra!$ 'f #9an7$ 'f #an! %ar&a!&'n fr' ($&7n

In 10m 'mm

Can!

*a3imum "ifference to "esi$n 5mm

T' "rfa#$

#efects in 10m c,or"

#efects in 10m c,or" .it, 1!8m offset

5mm

5mm

Tra# L$%$,

Pain Track

T,rou$, patform


18/25


4.3 CONSTRUCTION TOLERANCES FOR REUSED MATERIAL

H,ere track is to e constructe" reusin$ materias in particuar .orn rai t,e $eometric toerances are toe as $iven in Tae '!&! ote t,at reuse" rai s,a not e transpose"!

Ta+,$ 4.3- T',$ran#$ f'r r$"$( #'n!r"#!&'n

G$'$!r M$a"r$ C'n!r"#!&'n

Ga"7$-

)urves .orn rai

Strai$,ts .orn rai

Eariation in 2m

J15mm &mm

J7mm &mm

5mm

L&n$ !an7$n! an( #"r%$ >$#,"(&n7 !ran&!&'n?

*i" or"inate "eviation from "esi$n in 10m c,or" en$t, 5mm

A,&7n$n!

Eariation from surve monuments

Eariation et.een a"4acent surve monuments

Eariation from "esi$n at patforms 6J6 is a.a frompatform-

15mm

10mm

J10mm 5mm

T8&! ra!$ 'f #9an7$ 'f #an! 1 in 700

T8&! ra!$ 'f #9an7$ 'f #an! %ar&a!&'n fr' ($&7n

In 10m 'mm

Can!

*a3imum "ifference to "esi$n 5mm

T' "rfa#$

#efects in 10m c,or"

#efects in 10m c,or" .it, 1!8m offset

5mm

5mm

Tra# L$%$,

Pain Track

T,rou$, patforms an" overri"$es .it, minimum aast"ept,

J50mm 75mm

J20mm 20mm

C'n#r$!$ S,$$$r

Pain Track spacin$

Ske.

25mm

10mm

Si"in$ construction toerances s,a e as specifie" for reuse" materias! ?o.ance for variation "ue to a""itiona.ear of materia s,a e consi"ere"!

4.4 ADDITIONAL RESTRICTIONS AT ORKSITESIf track construction takes pace .,ie trains are in operation t,e track $eometr s,ou" comp .it, t,esere(uirements! Reference aso s,ou" e ma"e to t,e monitorin$ re(uirements $iven un"er Hork)ertification )ommissionin$- in )PTS=5& Infrastructure mana$ement an" principes-! H,ere track mae at si$nificant variance from "esi$ne" ,ori9onta or vertica ai$nment for e3ampe skeeton trackfoo.in$ aast ceanin$- t,e foo.in$ a""itiona re(uirements s,a app:

a- t,e ma3imum spee" ao.e" s,a e 20 km/,! T,ese circumstances ma re(uire t,e operation oftrains to e piote"!-

- t,e vertica ai$nment measure" usin$ a 20 m c,or" an" t,e mi"or"inate offset at an ocation s,a note3cee" 75 mm

c- t,e ,ori9onta ai$nment measure" usin$ a 20 m c,or" an" t,e mi"or"inate offset at an ocation s,anot e3cee" &&0 mm!


19/25


4.5 TRACK MONUMENTING

To ao. for future monitorin$ of t,e track ai$nment an" track position a re$uar monumentin$ s,a e provi"e"!?i$nment monuments s,a e ocate" in accor"ance .it, Tae '!5!

Ta+,$ 4.5- R$"&r$( a#&n7 f'r !ra#&($ 'n"$n!

L'#a!&'n Sa#&n7

Strai$,ts ;ver 100 m

)ircuar curves an" transition curves Start an" en" points pus ever 50 m in et.een

Patforms ;it,er en" 100 mm in- an" mi"point


20/25


5.0 MONITORING AND MAINTENANCE

5.1 INSPECTIONB ASSESSMENT AND MAINTENANCE ACTIONS

Inspection assessment an" maintenance actions of track $eometr s,a incu"e t,e specific con"itions

s,o.n in Tae 5!1!

Ta+,$ 5.1 Tra# 7$'$!r &n$#!&'nB a$$n! an( a&n!$nan#$ a#!&'nT$ 'f&n$#!&'n

S$#&f #'n(&!&'n 'r a#!&'n !' '+$r%$

S#9$(",$( &n$#!&'n

Hakin$

inspections

a- I"entif visua an" report ovious track $eometr "efects an" con"itions i!e! in"icators of a

"efect- t,at ma affect t,e aiit of t,e track to $ui"e roin$ stock or cause unacceptae

roin$ stock response incu"in$ t,e foo.in$:

1- track $eometr "efects incu"in$ t,ose t,at ma in"icate proems .it, t,e un"erin$ track

an" civi infrastructure

2- ocations .,ere t,e "eterioration in track $eometr is anorma since ast inspecte"

&- in"ications of track $eometr an" ai$nment "efects incu"in$:

i! evi"ence of recent or current movement

ii! unusua .ear patterns on t,e raisiii! ocations .,ere t,e $eometr is inconsistent .it, t,e track eit,er si"e e!$! a su""en

c,an$e in curve ra"ius-

'- ovious variations in track ai$nment t,at ma for e3ampe affect cearances or track

staiit

5- ai$nment "efects an" si$ns of movement t,at cou" cause e3cessive viration of track

mounte" si$nain$ e(uipment

+- ot,er ovious "efects t,at ma affect track staiit an" support!

- Intervas et.een .akin$ inspections s,a not e3cee" &1 "as!


21/25


Ta+,$ 5.1>#'n!&n"$(?- Tra# 7$'$!r &n$#!&'nB a$$n! an( a&n!$nan#$ a#!&'n

T$ 'f&n$#!&'n

S$#&f #'n(&!&'n 'r a#!&'n !' '+$r%$

S#9$(",$( &n$#!&'n (continued)

#etaie"inspections

a- Inspections s,ou" e carrie" out t,e continuous Track Geometr )ar .it, aiit to

measure $au$e top ,ori9onta ai$nment cant s,ort t.ist an" on$ t.ist! Recor" tpe si9e

an" ocation of e3cee"ences!

- T,e foo.in$ s,ou" e ac,ieve":

1- i"entification of track $eometr "efects in a .a .,ic, .i ao. priorities for reme"ia

action to e assesse" an"

2- provision of statistica measurements of t,e (uait of track $eometr .,ic, can e use" as

a pre"ictive or pannin$ too!

c- Interva et.een inspections not to e3cee" & mont,s!

Un#9$(",$( &n$#!&'n

Genera

inspections

? $enera inspection s,ou" e carrie" out at specific ocations .,en suspecte" "efects are

i"entifie" from con"itions "etermine" "urin$ ot,er inspections an" as "efine" t,e responses to

Tae 5!5! T,e $eometr at t,e ocation s,ou" e measure" an" compare" .it, specific imits!T,e cause restrictions an" repair .ork s,ou" e "etermine" takin$ into account t,e oca

con"itions at t,e site t,at ma affect "eterioration rates! Genera inspections s,ou" aso i"entif

t,e nee" for furt,er speciaist inspection!

A$$n! an( $!9'( 'f a$$n!

?ssessment

an" actions

a- or track "esi$ne" an" constructe" in accor"ance .it, t,e re(uirements of Section 2 an" & t,e

assessment for track $eometr "efects s,a e in accor"ance .it, Taes 5!2 an" 5!&! T,ese taes

$roup "efects into "efect an"s for eac, measure" parameter an" met,o" of measurement! T,e

track is aso $roupe" into spee" an"s! T,e response for a specific "efect is "etermine" from t,e

intersection of t,e "efect an" ro.- an" spee" an" coumn-!

c- Tae 5!5 $ives t,e response co"es i!e! ;1 ;2 P1 P2 an" - .,ic, "efine t,e ma3imum

perio" .,ic, can e ao.e" to eapse efore inspection an" response action of i"entifie"

$eometric "efects s,ou" e un"ertaken!

"- Imposin$ a o.er spee" restriction ma mo"erate t,e response i!e! usin$ t,e restricte" spee"

to "etermine t,e response as t,ou$, it .ere t,e ori$ina track spee"! Spee" restrictions can

t,erefore e use" to mana$e an" prioriti9e t,e inspection an" response action of "efects!

e- T,e responses "efine" in Taes 5!2 an" 5!& are ase" on isoate" $eometric "efects! ? more

strin$ent response t,an t,at man"ate" t,e $eometr aone ma e necessar if "eterioration of

t,e infrastructure ot, at t,e "efect an" on a"4oinin$ tracks is in evi"ence see )PTS=5&

Infrastructure mana$ement an" principes-!

f- #efects ma e reassesse"! T,is reassessment ma resut in a response action t,at is more

strin$ent or ess strin$ent!


22/25


Ta+,$ 5.1>#'n!&n"$(?- Tra# 7$'$!r &n$#!&'nB a$$n! an( a&n!$nan#$ a#!&'n

T$ 'f&n$#!&'n

S$#&f #'n(&!&'n 'r a#!&'n !' '+$r%$

A$$n! an( $!9'( 'f a$$n! (continued)

Geometr"efect

cate$ories

Oimits ,ave een specifie" in Taes 5!2 an" 5!& for t,e foo.in$ $eometr "efect cate$oriesa- Ga"7$ is measure" et.een points on t,e $au$e or insi"e- face of t,e rais 1+ mm eo. t,e

top! T,e .i"e $au$e vaues in t,e tae app to .e tie" timer seepere" track on! or

tracks .it, concrete an" stee seepers .,ere a ,i$,er t,an e3pecte" "eterioration in $au$e ,as

een "etecte" et.een inspections t,e track s,ou" e su4ecte" to an unsc,e"ue" "etaie"

inspection an" appropriate actions taken! *easurement of ti$,t $au$e incu"es t,e effect of

an ,ea" fo. present!

- 'r&@'n!a, a,&7n$n!is measure" usin$ t,e mi"or"inate offset versine- of a 10 m c,or"!Oimits in Tae 5!2 ,ave een set ase" on t,e variation from t,e actua "esi$n versine! ?fitte" versine @see noteA can e use" in ieu of t,e "esi$n versine .,ere t,e fitte" versine sticompies .it, t,e minimum "esi$n stan"ar"s! ?t o. spee"s in Tae 5!2 t,e minimumra"ius ne$otiae roin$ stock is use" as t,e imitin$ criterion!

c- T' >%$r!a, a,&7n$n!?is assesse" usin$ t.o criteria! S,ort top is measure" usin$ t,e offset1!5 m from one en" of a 5 m c,or"!

"- Can! %ar&a!&'n. )ant is t,e "ifference in eve of t,e t.o rais at a sin$e point aon$ t,e track!T,e variation in cant is measure" as a variation from t,e "esi$n cant in mm! T,e asoutevaue of cant s,a not e ao.e" to e3cee" 1+0 mm an.,ere-!

e- T8&!is t,e variation in actua track cant i!e! t,e "ifference in eve of t,e t.o rais- over a

"efine" en$t,! T.ist s,a e assesse" usin$ t.o criteria: s,ort t.ist in mm s,a e

measure" over 2 m an" on$ t.ist in mm s,a e measure" over 1' m! #ifferent on$ t.ist

parameter imits ma app in transition curves t,an in ot,er track i!e! tan$ent an" circuar

curves- .,ere t,e on$ t.ist ma e primari t,e resut of a "esi$ne" cant variation!

ote: ? fitte" versine is "erive" automatica t,e track $eometr car! T,e car measures t,e versine on a 10 mc,or" ever 1 m! If t,e vaue of t,e versine at point ? is UaD t,en t,is vaue is store" an" aso recor"e" as t,e

actua versine at point ?! ?fter travein$ a furt,er &= m t,e car mat,ematica e3amines t,e store" versines overt,e previous '0 m an" "eci"es .,et,er point ? .as on strai$,t track or on curve! If it "eci"es t,at it .as onstrai$,t t,e vaue UaD is aso recor"e" as a variation from "esi$n versine i!e! 0-! If it "eci"es it .as on curve ortransition at point ? it .i cacuate .,at t,e versine s,ou" ,ave een at point ? an" .i "erive t,e "ifferenceet.een t,e cacuate" or fitte"- versine an" UaD an" recor" it as a versine variation i!e! a misai$nment- at t,epoint .,ere it .as taken i!e! point ?-! T,is process $ives a $oo" appro3imation of .,at t,e versine s,ou" e an"is terme" a 6fitte" versine6 to "istin$uis, it from t,e "esi$n versine .,ic, .ou" e e3act! T,e process is simiarto t,e automatic inin$ of a tampin$ mac,ine t,at uses a aser eam from a troe at a fi3e" "istance a,ea" of t,emac,ine as it traves aon$!

Ta+,$ 5.2- M&n&" r$'n$ r$"&r$$n! an( a,,'8a+,$ !ra&n $$(.

M$a"r$( ara$!$r &n 8&!9 !ra# "n($r ,'a( Ma&" $$( 1

Ga"7$ 'r&@. a,&7n. S9'r! T8&! =0 :5 40 20

&($ T&79! %$r&n$ 'n

10. #9'r(

$$ n'!$ 2

!' 5 S9'r!

2

L'n7 14

V&8 V20 V&+ V25 V70 ;1 ;1 ;1 ;1

&5&8 1=20 &0&+ 2&25 +170 ;1 ;2 ;2 ;2

2=&' 1718 V'5 2+2= 2122 5&+0 ;2 P1 P1 P2

2728 151+ &5'5 2225 1=20 '752 P1 P2

252+ 101' 25&' 1=21 1718 '1'+ P2


23/25


Ta+,$ 5.3- M&n&" r$'n$ r$"&r$$n! f'r #an! %ar&a!&'n.

Can! %ar&a!&'n Tan7$n! !ra# >&n#,ra(&& H 2000

C"r%$( !ra# &n#,"(&n7 !ran&!&'nB ra(&&

2000

In"ff&$n! #an! +a$('n a&" ($&7n

$$(

E#$ #an! +a$( 'n a&"($&7n $$(

?soute cant V 1+0mm re(uires ;1 response @note &A

V+0 ;2 ;2 @note 'A ;2 @note +A

50+0 P1 P1 @note 5A P1 @note +A

otes on Taes 5!2 an" 5!&:

@1A *a3imum spee"s are for PTS


24/25


Ta+,$ 5.5- R$'n$ r$"&r$$n! ($f&n&!&'n

R$'n$ #a!$7'r In$#!

n'!$ 1

R$a&r

n'!$ 2

O!9$r r$"&r$$n!

;mer$enc cass 1

;1

Prior to t,e passa$e

of t,e ne3t train

Prior to t,e passa$e

of t,e ne3t train

H,ere t,e response cate$or cannot e re"uce"

eo. ;1 a re"uction in spee" trains ma onpass t,e site un"er t,e contro of a piot!

?ssessment of t,e "efect a competent .orker

must e ma"e to "etermine if trains can e piote"

;mer$enc cass 1

;2

;it,er efore t,e

ne3t train or .it,in

2 ,ours .,ic,ever

is t,e on$er-

.it,in 2' ,ours If t,e "efect cannot e inspecte" or repaire" .it,in

t,e nominate" time an" t,e response cate$or can

not e re"uce" eo. ;2 a re"uction in spee"

trains ma on pass t,e site at spee"s up to 20 km/,

foo.in$ assessment a competent .orker!

Priorit cass 1 P1 Hit,in 2' ,rs .it,in 7 "as

Priorit cass 2 P2 Hit,in 7 "as .it,in 28 "as

Routine inspection ? "eviation from "esi$n $eometr up to t,e o.est

eve of P2 "efect "oes not re(uire an action aove

t,e norma inspection re$ime!

otes on Tae 5!5

@1A In t,e event of faiure to inspect reporte" fauts t,e specifie" time t,e ao.ae ve,ice spee" must e

re"uce" at east one spee" an"! ? revise" inspection perio" in ine .it, t,e o.er spee" an" ma t,en e

use"! If t,e "efect is suse(uent inspecte" t,e spee" ma e raise" to t,e ,i$,er an" su4ect to repair ein$

ac,ievae .it,in t,e nominate" perio" for t,e ,i$,er an"!

@2A In t,e event of inaiit to repair t,e track t,e faut must e reassesse" on site prior to t,e e3pir of t,e action

response time!

@&A Refer to )PTS=5& Infrastructure mana$ement an" principes-!

:.0 DOCUMENTATION

:.1 SCEDULES OF CUR6ES AND GRADIENTS

Sc,e"ues s,a e maintaine" in accor"ance .it, >PIS501 #ocument an" #ata )ontro- of:

a- a curves on t,e rai.a sstem s,o.in$ for eac, curve t,e ine km of eac, tan$ent point ra"ius

"esi$n actua cant cant "eficienc an" e(uiirium spee"

- a $ra"ients on t,e rai.a sstem s,o.in$ for eac, ine t,e km of eac, c,an$e of $ra"e an" t,e $ra"e

et.een eac, c,an$e of $ra"e!

SCHEDULES TO BE PREPARED

:.2 INSPECTION REPORTS

a- ? inspection reports s,a e maintaine" in accor"ance .it, )PR#/PR)/0'+ Recor"s *ana$ement

- Sc,e"ue" track $eometr car inspection an" assessment "ocumentation an" recor"s s,ou" e keptfor a minimum of t.o ears!

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part 1025 rail track geometry

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