Contents show

RDSO/T–8926: Dimensional Report for Improved Switch Expansion Joint (65mm Max. Gap) for B.G. 60kg UIC on PSC Sleepers for Curves >2⁰ to 4⁰

Format No. ISEJ/65/F-04

DIMENSIONAL INSPECTION REPORT OF CURVED IMPROVED SWITCH EXPANSION (ISEJ)

60 Kg to Drg No. RDSO/T-8926

(Stock Rail in
assembled condition/ Tongue Rail in loose)

PARAMETERS

DRG.

DIM. (MM)

Mode of Measurement

Observation (mm)

Set no. 01

Set no. 02

SL. No. 01

SL. No. 02

Overall Length

18700+3

By Tape

18702

Length of Stock Rails RT-8926/1

7100+3

By Tape

7100

7103

7100

7103

Length of Tongue
Rails RT-8926/3

5750+3

By Tape

5751

5752

5751

5752

Length of Stock
Rails RT-8926/2

5920+3

By Tape

5920

5923

5920

5923

Length of Tongue
Rails RT-8926/4

6950+3

By Tape

6951

6950

6951

6950

Versine for
Assembly @ 4675 mm dist. accordingly

By Chord & Scale

For 2.0º – 2.5º

42.2-56.2-42.2

For 2.5º – 3.0º

51.5-68.7-51.5

For 3.0º – 3.5º

60.9-81.2-60.9

For 3.5º – 4.0º

70.3-93.7-70.3

Matching of
assembled Stock Rail

0.5mm filler

Filler Gauge

Composite head
width of assembled Stock Rail

89.5 +1.5/-0.5

No.16

Composite Foot
width of assembled Stock Rail

150 +0.5/-1.0

No.10

Half head width
of big stock &Tongue Rail

44.75 +0.25/-1.0

No.18

Half foot width
of big stock & Tongue Rail

83.75 +0.5/-1.0

No.11

Machining
length of Tongue Rail at foot

610

No. 13

12 mm down at toe
end of big stock rail (RT-8926/1)

12/80

No-14*

3 mm down at toe
end of tongue &small stock rail (RT-8926/2)

3/50

No-3

Side Slope of
Tongue / small Stock Rail (RT-8926/2)

3/50 x 5R

No.20

10R Tongue
/Stock Rail

10R

No.19

50R (inside)
Tongue Rail

50R

No.5

50R (Outside) big
Stock Rail

50R

No.21

Out foot
Machining of assembled Stock Rail(RT-8926/1)

As per Drg.

No. 15

Outside foot
Planning of Stock Rail(RT-8926/1)

As per Drg.

No. 17

End Squareness

—

By Tri-square

Chamfering 3×3
& removal of sharp edges not more than 2R

—–

By suitable means

Surface Roughness
(randomly)

3.2 micron

By surface roughness tester

*Modified gauge

Format No. ISEJ/65/F-05

DIMENSIONAL INSPECTION REPORT OF CURVED IMPROVED SWITCH EXPANSION (ISEJ)

60 Kg to Drg No. RDSO/T-8926

(Assembly of
Curved Improved SEJ)

1. Description: Layout of Improved SEJ to drawing no. RDSO/T-8926

PARAMETERS

DRG. DIM.

(mm)

Mode of Measurement

Observation (mm)

Set no. 01

Set no. 02

SL. No. 01

SL. No. 02

Overall length of
SEJ

18700+3

By Steel Tape

18703

Composite head
width of Stock Rail

89.5(+1.5,
-0.5)

Vernier & G-16

89.6

89.8

89.6

89.8

Composite Foot
width of Stock Rail

150(+1,
-0.5)

Vernier & G-10

150.3

151

150.3

151

Matching of
Tongue / Stock Rail

0.5mm filler

By Filler gauge

Center to center
distance of CI Chair

600

By Steel Tape

Mean position of
tongue rail

Centre of CI chair

By Chord

GAP between Stock
and Tongue Rail at mean position

40mm

Vernier

40,40

Removal of Sharp
edges

< 2R

Visual

Alignment

±1

By Chord

Condition of
Fittings

—

visually

Versine for
Assembly @ 4675 mm dist. accordingly

By Chord & Scale

For 2.0º – 2.5º

42.2-56.2-42.2

For 2.5º – 3.0º

51.5-68.7-51.5

For 3.0º – 3.5º

60.9-81.2-60.9

For 3.5º – 4.0º

70.3-93.7-70.3

2. Description: Stock Rail (Drg. No. RDSO/T-8926/1)

Sl. No.

PARAMETERS

DRG. DIM.

(mm)

Mode of Measurement

Observation (mm)

Set no. 01

Set no. 02

SL. No. 01

SL. No. 02

Length / Machining Length

7100 (+3)

By Tape

7100

7103

7100

7103

Top Width

44.75 (+0.25, -1)

Vernier/G-18

44.90

Bottom Width

83.75 (+0.5, -1)

Vernier/G-11

84.2

Top Slope

12/80

By Scale, Gauge/G-14

Radius on Head Foot

50R

By Gauge/G-21

Radius on Foot & Head (NGF Side)

10R

By Gauge/G-19

Chamfering

3 x 3

Visual

In Foot flange M/C Length

5720

By Tape

Sloping Length (2 Nos.)

350

By Scale

10.

Flange Thickness at machined area

11.5

By Gauge/G-15

11.

Versine @ 1775 mm dist. accordingly

By Chord & Scale

For 2.0º – 2.5º

6.1-8.1-6.1

For 2.5º – 3.0º

7.4-9.9-7.4

For 3.0º – 3.5º

8.8-11.7-8.8

For 3.5º – 4.0º

10.1-13.5-10.1

3. Description: Stock Rail (Drg. No. RDSO/T-8926/2)

Sl. No.

PARAMETERS

DRG. DIM.

(mm)

Mode of Measurement

Observation (mm)

Set no. 01

Set no. 02

SL. No. 01

SL. No. 02

Length / Machining Length

5920 (+3)

By Tape

5920

5923

5920

5923

Top Width

44.75 (+0.25, -1)

Vernier/G-18

44.9

Bottom Width

83.75 (+0.5, -1)

Vernier/G-11

83.8

Top Slope

3/50

By Scale, Gauge,G-3

Side Slope

3/50

By Scale, Gauge,G-3

Radius on Head

By Gauge

Radius on Foot

10R

By Gauge,G-19

Versine @ 1480 mm dist. accordingly

By Chord & Scale

For 2.0º – 2.5º

4.2-5.6-4.2

For 2.5º – 3.0º

5.2-6.9-5.2

For 3.0º – 3.5º

6.0-8.1-6.0

For 3.5º – 4.0º

7.0-9.4-7.0

4. Description: Tongue Rail (Drg. No. RDSO/T-8926/3)

Sl.
No.

PARAMETERS

DRG. DIM.

(mm)

Mode of Measurement

Observation (mm)

Set no. 01

Set no. 02

SL. No. 01

SL. No. 02

Length /
Machining Length

5750 (+3)

By Tape

5751

5752

5751

5752

Machining Length
Top & Bottom

603.5 / 610

By Gauge & Tape,G-13

Top Width

44.75 (+0.25, -1)

Vernier,G-18

44.5

Bottom Width

83.75 (+0.5, -1)

Vernier,G-11

84.2

Top Slope of head

3/50

By Scale & Gauge,G-3

Side Slope

3/50 & 5R

By Scale & Gauge, G-20

Radius on Head
& Foot

50 R

By Gauge,G-5

Radius on Head
& Foot

10 R

By Gauge,G-19

Radius on Foot at
End

10 R

By Gauge,G-19

10.

Versine @ 1737.5 mm dist. accordingly

By Chord & Scale

For 2.0º – 2.5º

5.8-7.8-5.8

For 2.5º – 3.0º

7.1-9.5-7.1

For 3.0º – 3.5º

8.4-11.2-8.4

For 3.5º – 4.0º

9.7-12.9-9.7

5. Description: Tongue Rail (Drg. No. RDSO/T-8926/4)

Sl. No.

PARAMETERS

DRG. DIM.

(mm)

Mode of Measurement

Observation (mm)

Set no. 01

Set no. 02

SL. No. 01

SL. No. 02

Length

6950 (+3)

By Tape

6951

6950

6951

6950

Machining Length Top & Bottom

603.5 / 610

By Gauge & Tape,G-13

Top Width

44.75 (+0.25, -1)

Vernier,G-18

44.8

Bottom Width

83.75 (+0.5, -1)

Vernier,G-11

84.25

Top Slope of head

3/50

By Scale & Gauge,G-3

Side Slope

3/50 & 5R

By Scale & Gauge, G-20

Radius on Head & Foot

50 R

By Gauge,G-5

Radius on Head & Foot

10 R

By Gauge,G-19

Radius on Foot at End

10 R

By Gauge,G-19

10.

Versine @ 1437.5 mm dist. accordingly

By Chord & Scale

For 2.0º – 2.5º

4.0-5.3-4.0

For 2.5º – 3.0º

4.9-6.5-4.9

For 3.0º – 3.5º

5.8-7.7-5.8

For 3.5º – 4.0º

6.6-8.9-6.6

Dimension Sheet of Fittings/ other component of Improved SEJ
to drawing no. RDSO/T-8926

Description: C. I. Chair (Drawing
No. RDSO/T-6923)

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation (mm)

Remarks

Total Length

520±2

Steel Tape

521

520

Satisfactory

Width

300+1/-0

Steel Tape

301

300

301

Hole position
for Plate Screw

445 & 120

G-8,9

Hole dia for
Plate Screw

27±0.8

Vernier&
G-8

27-27.7

27.2-27.5

27.3-27.7

position of rectangular hole for Tee- head bolt

105/105

G-6,6A,&7

Size of rectangular hole for Tee- head bolt

43×27

G-7

Top
machining/Profile of CI Chair

As per drg.

G-12,12A,12B

Thickness at Rail
Seat

36.5, 40, 45

Vernier

36.5, 40, 45

Dia& depth
of slot for Tee-head bolt

51,25

Vernier

51,25.5

51, 26

51, 25

Condition of CI
Chair

—

Visual

Item: C.I. Chair (RDSO/T-4168)

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation (mm)

Remarks

Length

520 (+ 2)

By Tape & Gauge

520

521

Satisfactory

Width

300 (+1, -0)

By Tape & Gauge

300.5

301

Hole Centre (Width Wise)

120 (+1)

By Tape & Gauge

120.5

121

Hole Centre (Length Wise)

445 (+1)

By Tape & Gauge

445

Hole Dia. For Plate Screw (4 Nos.)

27 Dia.

By Vernier

Thickness at Edge

By Vernier

Thickness at Collar

32 + 6

By Vernier

Height (UP)

By Vernier

Height (Dn)

By Vernier

10.

Thickness at Centre

By Vernier

11.

Slop Length (1 in 20)

162 (+2, -0)

By Scale &Gauge

12.

Hole Dia. For ERC

22 (+1, -0)

By Scale & Gauge

Description: M. S. Bracket
(Drawing No. RDSO/T-6924):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Total Length

300±3

Vernier

300

Satisfactory

Width of Bracket

135

Vernier& Tri-Square

Thickness of Bracket at bottom

Vernier

Hole dia

28±0.8

Vernier

Distance of hole
centre from edge

Vernier

Thickness &
spacing of stiffener

25, 100

Vernier

Spacing of hole
from edge & C/C

45,105

Vernier

Description: M. S. Bracket
(Drawing No. RDSO/T-6925):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Total Length

300±3

Vernier

301

302

Satisfactory

Width of Bracket

137.5

Vernier& Tri-Square

Thickness of Bracket at bottom

Vernier

Hole dia

28±0.8

Vernier

Distance of hole centre from edge

Vernier

Spacing of hole
from edge & C/C

45,105

Vernier

Description: M. S. Bracket with
packing piece(Drawing No. RDSO/T-6926):

PARAMETERS

DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Total Length

300±3

Vernier

301

302

301

302

Satisfactory

Width of Bracket
with packing piece

152.5

Vernier& Tri-Square

Width of Bracket
without packing piece

135

Vernier& Tri-Square

Thickness of Bracket at bottom

Vernier

Hole dia

28±0.8

Vernier

Distance of hole
centre from edge

Vernier

Thickness &
spacing of stiffner

25, 100

Vernier

Spacing of hole
from edge & C/C

45,105

Vernier

Size of packing piece

140×106×17.5

Vernier

Description: Hardened Washer
(Drawing No. RDSO/T-8514):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Length

102.7 +0.0/-0.8

Vernier

102

Satisfactory

Width

50 +0.8/-0.0

Vernier

50.5

50.4

Dia. of hole

27+0.52/-0.0

Vernier

Thickness

10 +0.6

Vernier

Hole centre

51.4+0.8

Vernier

Description: Hardened Washer
(Drawing No. RDSO/T-8515):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Length

102.7 +0.0/-0.8

Vernier

102

101.9

Satisfactory

Width

50+0.8/-0.0

Vernier

Dia. of hole

27+0.52/-0.0

Vernier

Width of slot

+0.8/-0.0

Steel scale

Thickness

10 +0.6

Vernier

Depth of slot

Vernier

Hole centre

51.4+0.8

Vernier

Description: Angle Tie (Drawing
No. RDSO/T-6927):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Total Length

1470±3

Vernier

1472

1470

Satisfactory

Width

Vernier

Height

Vernier

Thickness

Vernier

Hole dia

27±0.8

Vernier

Distance of hole
centre from edge

75,120,480

Vernier

Hole height

Vernier

Description: Tee-head bolt
(Drawing No. RDSO/T-2659):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Total Length

95±3

Vernier

95.2

Satisfactory

Thread length

Vernier

Dia. of bolt

25+1/-0

Vernier

Head width of
bolt

41 +1/-0.4

25 +1/-0.4

Vernier

Thickness of head

22±0.65

Vernier

Description: Tee-head bolt
(Drawing No. RDSO/T-2660):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Total Length

110±3

Vernier

110

111

Satisfactory

Shank length

Vernier

Dia. of bolt

25+/-0

Vernier

Head width of
bolt

41 +1/-0.4,

25 +1/-0.4

Vernier

Thickness of head

22±0.65

Vernier

Description: HTS Bolt (Drawing
No. RDSO/T-8518)

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation (mm)

Remarks

Total Length of
bolt

90 +3/-0

Vernier

90.5

Satisfactory

Thread length of
bolt

45 +2/-0

Vernier

Diameter of bolt

24±0.84

Vernier

Head width of
bolt (A.F.)

41 +0/-1

Vernier

Head width of
bolt (C.C.)

47 +0/-1

Vernier

Head Thickness of
bolt

15±0.9

Vernier

Thickness of nut

24.2 Max,

22.9 Min

Vernier

Head width of nut
(A.F.)

41 +0/-1

Vernier

Head width of nut
(C.C.)

47 +0/-1

Vernier

Description: Single Coil Spring
Washer (Drawing No. T-10773):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Outer Dia

44.4 Max

Vernier

44.4

Satisfactory

Inner Dia

27 +1/-0

Vernier

27.2

27.3

Gap Bet. Two
Edge.

2.5±1

Filler gauge

Free Height

14± 0.75

Vernier

Thickness

8±0.2

Vernier

Description: Plate Screw (Drawing No.
RDSO/T-3911):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Length

140±5

Gauge

140

Satisfactory

Shank Dia.

24+0.2, -0.1

Vernier

Head height

38 +2,-1

Vernier

Dia. of
circular head

48±0.5

Vernier

Thread Pitch

12.5

Vernier

Description: Plate Screw (Drawing No.
RDSO/T-3915):

PARAMETERS

DRG. DIM. (mm)

Mode of Measurement

Observation
(mm)

Remarks

Length

180±5

Gauge

180

Satisfactory

Shank Dia.

24+0.2, -0.1

Vernier

Head height

38 +2,-1

Vernier

Dia. of circular
head

48±0.5

Vernier

Thread Pitch

12.5

Vernier

RDSO/T–8926: Dimensional Report for Improved Switch Expansion Joint (65mm Max. Gap) for B.G. 60kg UIC on PSC Sleepers for Curves >2⁰ to 4⁰

DIMENSIONAL INSPECTION REPORT OF CURVED IMPROVED SWITCH EXPANSION (ISEJ) (adsbygoogle = window.adsbygoogle || []).push({});

60 Kg to Drg No. RDSO/T-8926

DIMENSIONAL INSPECTION REPORT OF CURVED IMPROVED SWITCH EXPANSION (ISEJ)

60 Kg to Drg No. RDSO/T-8926

Leave a Comment Cancel reply

DIMENSIONAL INSPECTION REPORT OF CURVED IMPROVED SWITCH EXPANSION (ISEJ)