BS 4521-1.1:1971
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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. Turnouts over which British Railways locomotives operate Turnouts using bull head rails
Hardcopy , PDF
31-08-2015
English
12-05-1971
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Co-operating organizations
Foreword
Specification
1 Scope
2 Definitions
3 Inspection
4 Identification marking
5 Design and production
6 Nomenclature
7 Materials
8 Dimensions
Appendix
A Partly worn rail
Tables
1 Nomenclature for components
2 Materials for components
3 Leading dimensions of turnouts in Figs. 1, 2 and 3
4 Leading dimensions of turnouts in Fig. 5
Figures
1 Layout diagram for turnouts (1 in 7 and 1/2 L.H.
turnout shown)
2 Types of turnout, 1 in 7 and 1/2 and 1 in 8
3 Types of turnout, 1 in 9, 1 in 10, 1 in 11 and 1 in
12
4 Switches, crossing and check rail for L.H. turnout
5 Setting out details for types B and C switches
6 Rail joint (fishplated) (item 7)
7 Coach screw, fang bolt, ferrule and keys, (items 38,
39 and 40)
8 Common chair S1 (item 20)
9 Short base common chair L1 48LB (item 23)
10 Type B straight cut switches (item 43)
11 Type C straight cut switches (item 48)
12 Switch slide and switch block chairs for types B and
C switches (items 21 and 22)
13 Details of fittings for switches type B and C (items
35, 41, 71, 72 and 73)
14 Stretcher bars and steel soleplate (items 32, 33 and
70)
15 Crossing, 1 in 7 and 1/2 (item 44)
16 Crossing, 1 in 8 and check rail (items 45 and 10)
17 Crossing, 1 in 9 and 1 in 10 (items 46 and 47)
18 Crossing, 1 in 11 and check rail (items 49 and 10)
19 Crossing, 1 in 12 and check rail (items 50 and 10)
20 Crossing nose chair (built-up Type A chair with
extended nose blocks) (item 27)
21 Crossing and check chairs (items 24, 25 and 26)
22 Crossing chairs (item 26)
23 Switch and crossing bolts and nuts and spring
washers (item 41)
Turnouts from straight track, 4 ft 8½ in gauge, nomenclature, materials, design, production, inspection, identification marking, layout, leading and detail dimensions. Enlarged drawings available upon request.
| Committee |
RAE/2
|
| DevelopmentNote |
Reviewed and confirmed by BSI, March 2010. (02/2010)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
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