BS 4521-3.2:1975

Withdrawn

Specification for railway turnouts for private users. Medium grade turnouts over which British Railways locomotives do not operate, for axle loads not exceeding 25 tons Turnouts using flat bottom rails

Available format(s)

Hardcopy , PDF

Withdrawn date

31-08-2015

Language(s)

English

Published date

30-04-1975

Publisher

British Standards Institution

Co-operating organizations
Foreword
Specification
1 Scope
2 Definitions
3 Inspection
4 Identification marking
5 General requirements
6 Nomenclature
7 Materials
8 Dimensions
Appendix
A Partly worn rail
Tables
1 Nomenclature for components
2 Materials for components
3 Leading dimensions of heel switch turnouts in Figs.
    1, 2 and 5
4 Leading dimensions of spring switch turnouts in
    Figs. 3, 4, 6 and 7
Figures
1 Layout diagram for heel switch turnouts on timber
    supports
2 Layout diagram for heel switch turnouts on rolled
    steel supports
3 Layout diagram for spring switch turnouts on timber
    supports
4 Layout diagram for spring switch turnouts on rolled
    steel supports
5 Leading dimensions of 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, 1 in 8
6 Leading dimensions of spring switch turnouts, 1 in
    4 and 1/2, 1 in 5, and 1 in 5 and 1/2
7 Leading dimensions of spring switch turnouts, 1 in
    6, 1 in 6 and 1/2, 1 in 7, 1 in 7 and 1/2 and 1 in 8
8 Heel switches nomenclature
9 Spring switches nomenclature
10 9 ft heel switches (item 550) for turnouts 1 in 4
    and 1/2, 1 in 5 and 1 in 5 and 1/2
11 12 ft heel switches (item 554) for turnouts 1 in 6,
    1 in 6 and 1/2, 1 in 7, 1 in 7 and 1/2 and 1 in 8
12 22 ft 6 in spring switches (item 560)
13 Stretcher bars (items 132 and 133) and sole plate
    (item 527)
14 Crossing and check rail nomenclature for heel and
    spring switch turnouts
15 Crossing and check rail for heel switch turnouts 1
    in 4 and 1/2, 1 in 5, 1 in 5 and 1/2 and 1 in 6, and
    for spring switch turnouts 1 in 5 and 1/2 and 1 in 6
16 Crossing and check rail for spring switch turnouts 1
    in 4 and 1/2 and 1 in 5
17 Crossing and check rail for heel and spring switch
    turnouts 1 in 6 and 1/2
18 Crossing and check rail for heel and spring switch
    turnouts 1 in 7, 1 in 7 and 1/2 and 1 in 8
19 Switch and crossing bolts (item 547)
20 Switch and crossing blocks
21 Rail joint (fishplated) (item 107), fishplate (item
    116), fishbolt, nut and washer (item 182)
22 Switch baseplates
23 Back heel, common and check baseplates
24 Rail fastenings
25 Universal and stock rail washers

Turnouts from straight 4 ft 8½ in gauge track made from rails to BS 11, section 110A or 113A.

Committee	RAE/2
DevelopmentNote	Supersedes 72/36967 DC. (08/2005) Reviewed and confirmed by BSI, March 2010. (02/2010)
DocumentType	Standard
Pages	44
PublisherName	British Standards Institution
Status	Withdrawn

BS 500:1956	Specification for steel railway sleepers for flat bottom railway rails
BS 970-1(1972) : 1972
BS 970-5:1972	Specification for wrought steels in the form of blooms, billets, bars and forgings Carbon and alloy spring steels for the manufacture of hot formed springs
BS 913:1973	Specification for wood preservation by means of pressure creosoting
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
BS 84:1956	Specification for parallel screw threads of Whitworth form
BS 47:1959	Specification for steel fishplates for bullhead and flat bottom railway rails
BS 11:1985	Specification for railway rails
BS 24-3A:1959	Railway rolling stock material Specification for laminated springs and spring steels