spce 07- civil engg-sod odc crs sanction

SCHEDULE OF DIMENSIONSCHEDULE OF DIMENSIONFOR BG & MGFOR BG & MG

THREE SCHEDULES

SCHEDULE I : DIMENSIONS ESSENTIAL FOR SAFE WORKING.ANY DEVIATIONS NEED PRIOR SANCTION OF CRS

SCHEDULE II: RECOMMENDED DIMENSIONS FOR GOOD PRACTICES ANY DEVIATIONS DO NOT NEED SANCTION OF CRS

SCHEDULE III:IT GIVES DIMENSIONS THAT ARE INFRINGEMENT TO STANDARD DIMENSIONS

S.No.S.No. DescriptionDescription BG mmBG mm(ft.Inch)(ft.Inch)

MG MG mmmm(ft.inch)(ft.inch)

1.1. Minimum distance center to Minimum distance center to center of trackcenter of track

42654265 36603660

14’14’ 12’12’

a.a. Recommended distance Recommended distance center to center of trackcenter to center of track

47254725 39603960

15’6”15’6” 13’13’

S.NoS.No..

DescriptionDescription BG mmBG mm(ft.Inch)(ft.Inch)

MG mmMG mm(ft.inch)(ft.inch)

Station YardsStation Yards1.1. Minimum distance c/c Minimum distance c/c

of trackof track42654265 42654265

14’14’ 14’14’1a1a Recommended Recommended

distance c/c of trackdistance c/c of track47254725 44204420

15’6”15’6” 14’6”14’6”



2.2. Minimum radius of curvesMinimum radius of curves 175m 175m ( 10( 100 )0 )

109m109m(16(1600 ) )

3.3. Minimum clearance of check Minimum clearance of check rails for a curverails for a curve

4444 4141

4.4. Minimum clearance of check Minimum clearance of check rail at level crossingrail at level crossing

5151 5151

5.5. Maximum clearance of check Maximum clearance of check rail at Level Crossingrail at Level Crossing

5757 5757

6.6. Maximum depth of space of Maximum depth of space of wheel flange from RLwheel flange from RL

3838 3535

Check rail clearanceCheck rail clearanceMin 51mm. Min 51mm. max. 57mm max. 57mm Minimum depth of Minimum depth of check block check block 38mm(35mm) for MG38mm(35mm) for MG



Points & CrossingsPoints & Crossings18.18. Max. clearance of check rail Max. clearance of check rail

opposite nose of crossing or of opposite nose of crossing or of wing rail at nose of Xingwing rail at nose of Xing

4848 4444

18a.18a. Min. clearance of check rail Min. clearance of check rail opposite nose of crossing and opposite nose of crossing and at heel of switch railat heel of switch rail

4444 4141

19.19. Diamond crossing not be flatter Diamond crossing not be flatter thanthan

1 in 8-1/21 in 8-1/2

20.20. Minimum clearance between toe Minimum clearance between toe of open switch and stock railof open switch and stock rail

9595 8989

Maximum clearance between Maximum clearance between toe of open switch and stock railtoe of open switch and stock rail

115 115 100100



21.21. Maximum gradient in Maximum gradient in station yardsstation yards

1 in 4001 in 400 1 in 4001 in 400

21a21a Recommended Recommended gradient in station gradient in station yards.yards.

1 in 12001 in 1200 1 in 12001 in 1200



OVER-DIMENSIONAL OVER-DIMENSIONAL CONSIGNMENTSCONSIGNMENTS

Standard Moving DimensionsStandard Moving Dimensions Schedule of Dimensions provides for certain Schedule of Dimensions provides for certain

standard moving dimensions standard moving dimensions which govern which govern the construction of rolling stockthe construction of rolling stock

OVER-DIMENSIONAL OVER-DIMENSIONAL CONSIGNMENTS (CONSIGNMENTS (ODC)ODC)

Dimensions of which when loaded on wagons, Dimensions of which when loaded on wagons, exceed the exceed the standard moving dimensionsstandard moving dimensions

Movement under certain restrictions : Speed, Movement under certain restrictions : Speed, during day or night,during day or night,

depending on minimum clearance available to depending on minimum clearance available to fixed structures on the route. fixed structures on the route.

Net and Gross clearancesNet and Gross clearances Net clearance= Gross clearance -75mm for Net clearance= Gross clearance -75mm for

bounces in vertical directionbounces in vertical direction

ODCs ClassificationODCs Classification Class A : Class A :

Permitted out of gauge loads ; Permitted out of gauge loads ; net clearance: net clearance: 6” and above6” and above

MovementMovement CivilCivil

Day and night. Day and night. 40 kmph (BG)40 kmph (BG)

MilitaryMilitary Unrestricted speedUnrestricted speed

Class B : Class B : Exceptional out of gauge loads ; Exceptional out of gauge loads ; net clearances : 3” net clearances : 3”

and above but are less than 6”and above but are less than 6”

Movement:Movement: Civil:Civil:

40 kmph (BG)40 kmph (BG) Day only. Day only.

Military:Military: Night movement also permitted with Train escortNight movement also permitted with Train escort

C ClassC Class

Class C : Class C : Extraordinary out of gauge loads ; Extraordinary out of gauge loads ; net clearances: net clearances:

< 3”< 3” With restriction of stop dead and proceed dead With restriction of stop dead and proceed dead

slow at structures having most restricted slow at structures having most restricted clearance. clearance.

Train is to be piloted by official of the Mech. Train is to be piloted by official of the Mech. Department. Department.

CRS SANCTIONCRS SANCTION

Indian Railway Act- 1989 Indian Railway Act- 1989

Chap VI- Section 20 Chap VI- Section 20

Approval of CRS is necessary for execution Approval of CRS is necessary for execution of any work on open Line which will affect of any work on open Line which will affect running of trains running of trains

Except in case of emergencyExcept in case of emergency

WORKS FOR WHICH WORKS FOR WHICH CRS’S CRS’S SANCTION SANCTION NOT REQUIREDNOT REQUIRED

Realigning curves.Realigning curves. Lubrication of joints.Lubrication of joints. Painting of GirdersPainting of Girders Renewal of points & crossing involving no Renewal of points & crossing involving no

modification in lay out.modification in lay out. Rail & sleeper renewalRail & sleeper renewal

OPEN LINE WORKSOPEN LINE WORKSREQUIRING SANCTION OFREQUIRING SANCTION OF

COMMISIONER OF RAILWAY SAFETY’S COMMISIONER OF RAILWAY SAFETY’S

Additions or Alterations to running lines.Additions or Alterations to running lines. Electric traction installationsElectric traction installations Provision of New stationsProvision of New stations Provision of foot over bridge across the tracks. Provision of foot over bridge across the tracks. New Bridges or extensions of existing onesNew Bridges or extensions of existing ones New level crossing in running linesNew level crossing in running lines Carriage of O.D.C. having gross clearance less than Carriage of O.D.C. having gross clearance less than

6”.6”. Any work involving infringement to S.O.D.Any work involving infringement to S.O.D.

New linesNew lines No new Railway Line can be opened for No new Railway Line can be opened for

public carriage of passengers without public carriage of passengers without obtaining CRS’ sanction.obtaining CRS’ sanction.

No sanction is necessary for opening of new No sanction is necessary for opening of new lines to goods traffic.lines to goods traffic.

Line considered fit for opening when Line considered fit for opening when

All the works required for running of train has All the works required for running of train has been completed and commissionedbeen completed and commissioned

Staff required for operating new line posted Staff required for operating new line posted Track thoroughly packed and boxed Track thoroughly packed and boxed

throughoutthroughout Permanent maintenance gangs are distributed Permanent maintenance gangs are distributed

along definite sections.along definite sections.

ApplicationApplication 14 days before expected commencement of 14 days before expected commencement of

workwork For new lines, 1 month before opening of the For new lines, 1 month before opening of the

section.section.

Inspection by CRSInspection by CRS A week before opening date.A week before opening date. Will recommend one of the following Will recommend one of the following

Railways be opened unconditionallyRailways be opened unconditionally Railways be opened subject to certain stated Railways be opened subject to certain stated

restrictionsrestrictions Opening of the railways to be postponed until Opening of the railways to be postponed until

certain stated conditions have been fulfilled.certain stated conditions have been fulfilled.

spce 07- civil engg-sod odc crs sanction

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