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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”
S.No.S.No. DescriptionDescription BG mmBG mm(ft.Inch)(ft.Inch)
MG mmMG mm(ft.inch)(ft.inch)
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
S.No.S.No. DescriptionDescription BG mmBG mm(ft.Inch)(ft.Inch)
MG mmMG mm(ft.inch)(ft.inch)
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
S.No.S.No. DescriptionDescription BG mmBG mm(ft.Inch)(ft.Inch)
MG mmMG mm(ft.inch)(ft.inch)
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
S.No.S.No. DescriptionDescription BG mmBG mm(ft.Inch)(ft.Inch)
MG mmMG mm(ft.inch)(ft.inch)
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.