BS 4521-4:1975
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for railway turnouts for private users Heavy grade turnouts over which British Railways locomotives do not operate, for axle loads which may exceed 25 tons, using flat bottom rails
Hardcopy , PDF
31-08-2015
English
30-04-1975
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Co-operating organizations
Foreword
Specification
1 Scope
2 Definitions
3 Inspection
4 Identification marking
5 General requirements
6 Nomenclature
7 Materials
8 Dimensions
Tables
1 Nomenclature for components
2 Materials for components
3 Leading dimensions of heel switch turnouts with rail
crossings in Figs. 1 and 11
4 Leading dimensions of spring switch turnouts with
rail crossings in Figs. 2, 12 and 13
5 Leading dimensions of heel switch turnouts with cast
manganese crossings in Figs. 3 and 14
6 Leading dimensions of spring switch turnouts with
cast manganese crossing in Figs. 4 and 15
Figures
1 Layout diagram for heel switch turnouts with rail
crossings
2 Layout diagram for spring switch turnouts with rail
crossings
3 Layout diagram for heel switch turnouts with cast
manganese crossings
4 Layout diagram for spring switch turnouts with cast
manganese crossings
5 Heel switches nomenclature
6 Spring switches nomenclature
7 Rail crossing and check rails nomenclature
8 Cast manganese crossing and check rail nomenclature
9 Location and marking of rolled steel supports (item
545) for heel switch turnouts
10 Location and marking of rolled steel supports (item
545) for spring switch turnouts
11 Leading dimensions of heel switch turnouts with rail
crossings 1 in 4 and 1/2, 1 in 5, 1 in 5 and 1/2,
1 in 6, 1 in 6 and 1/2, 1 in 7, 1 in 7 and 1/2 and
1 in 8
12 Leading dimensions of spring switch turnouts with
rail crossings 1 in 4 and 1/2 and 1 in 5
13 Leading dimensions of spring switch turnouts with
rail crossings 1 in 5 and 1/2 , 1 in 6, 1 in 6 and
1/2, 1 in 7, 1 in 7 and 1/2 and 1 in 8
14 Leading dimensions of heel switch turnouts with cast
manganese crossings 1 in 4 and 1/2, 1 in 5, 1 in 5
and 1/2, 1 in 6, 1 in 6 and 1/2, 1 in 7, 1 in 7 and
1/2 and 1 in 8
15 Leading dimensions of spring switch turnouts with
cast manganese crossings 1 in 4 and 1/2, 1 in 5, 1
in 5 and 1/2, 1 in 6, 1 in 6 and 1/2, 1 in 7, 1 in
7 and 1/2 and 1 in 8
16 Heel switches (item 650) for turnouts 1 in 4 and
1/2, 1 in 5 and 1 in 5 and 1/2
17 12 ft heel switches (item 654) for turnouts 1 in 6,
1 in 6 and 1/2, 1 in 7, 1 in 7 and 12 and 1 in 8
18 22 ft 6 in spring switches (item 660) for turnouts
1 in 4 and 1/2, 1 in 5, 1 in 5 and 1/2, 1 in 6, 1 in
6 and 1/2, 1 in 7, 1 in 7 and 1/2 and 1 in 8
19 Rail crossings and check rails for heel switch
turnouts 1 in 4 and 1/2, 1 in 5, 1 in 5 and 1/2, 1
in 6, 1 in 6 and 1/2, 1 in 7, 1 in 7 and 1/2 and 1
in 8
20 Rail crossings and check rails for spring switch
turnouts 1 in 4 and 1/2 and 1 in 5
21 Cast manganese crossings for heel and spring switch
turnouts 1 in 4 and 1/2, 1 in 5, 1 in 5 and 1/2, 1
in 6, 1 in 6 and 1/2, 1 in 7, 1 in 7 and 1/2 and 1
in 8
22 Rail joint (fishplated) (item 107), fishplate (item
116), fishbolt, nut and washer (item 182)
23 Special fishplate (item 678) for manganese 1 in 7
and 1/2 and 1 in 8 crossings
24 Rolled steel support (item 545)
25 Steel sleeper (item 563)
26 Spring clip (item 546) for rolled steel support and
steel sleeper
27 Switch baseplates
28 Stretcher bars (items 132 and 133)
29 Switch, crossing and check blocks
30 Switch and crossing bolts (item 647)
Turnouts from straight 4 ft 8½ in gauge track made from rails dimensionally in accordance with BS 11, section 110A or 113A, in wear resistant steel quality or of cast austenitic manganese steel to BS 1457.
| Committee |
RAE/2
|
| DevelopmentNote |
Supersedes 73/33939 DC. (08/2005) Reviewed and confirmed by BSI, March 2010. (02/2010)
|
| DocumentType |
Standard
|
| Pages |
50
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
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| BS 1802:1951 | Specification for steel spring washers for general engineering and automobile purposes |
| BS 64:1946 | Specification for steel fishbolts and nuts for railway rails |
| BS 24-6(1957) : LATEST | RAILWAY ROLLING STOCK MATERIAL - STEEL SLABS, PLATES, SECTIONS, BARS AND RIVETS FOR LOCOMOTIVE BOILERS, LOCOMOTIVES, CARRIAGES AND WAGONS |
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| BS 47:1959 | Specification for steel fishplates for bullhead and flat bottom railway rails |
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| BS 1457(1957) : LATEST | AUSTENITIC MANGANESE STEEL CASTINGS |
| BS 24-3A:1959 | Railway rolling stock material Specification for laminated springs and spring steels |
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