Standard
UPDATE AVAILABLE
AS 1085.21:2014
[Superseded]Railway track material, Part 21: Turnouts, switches and crossings
Specifies requirements for the design and manufacture of turnouts, switches and crossings and their components.
Published: 27/06/2014
Pages: 53
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Context and purpose of use
1.2.1 Function
1.2.2 Action
1.3 Referenced documents
2 Terminology and drawings
2.1 General
2.2 General terms
3 Turnout design
3.1 General
3.2 Design parameters
3.2.1 General
3.2.2 Geometry
3.2.3 Gauge
3.2.4 Rail weight/Section
3.2.5 Crossing type
3.2.6 Switch type
3.2.7 Bearer type
3.2.8 Fastening system
3.2.9 Wheel rail interface
3.2.10 Operating parameters
3.2.11 Cant deficiency
3.2.12 Nominal design life
3.2.13 Signalling interfaces
3.2.14 Technical specifications
3.2.15 Noise and vibration
3.2.16 Bearer layout and spacing
3.2.17 Plating and/or shoulder footprint
3.2.18 Transitioning cant/rail/sleeper/gauge
3.3 Tangential
3.4 Secant
3.4.1 General
3.4.2 Secant turnout design formula
4 Manufacture
4.1 Materials, tests and standards
4.2 Rails, fishplates and sleeper plates
4.2.1 Rail
4.2.2 Fishplates
4.2.3 Sleeper plates
4.3 Castings
4.4 Manganese steel castings
4.4.1 General
4.4.2 Material
4.4.3 Heat treatment
4.4.4 Machining allowance
4.4.5 Surface hardening
4.4.6 Surface defects
4.4.6.1 General
4.4.6.2 Manufacturing defect repairs
4.4.7 Internal defects
4.4.8 Weld maps
4.4.9 Repair of defects
4.4.9.1 General
4.4.10 Explosive hardening
4.4.11 Straightening of castings
4.4.12 Epoxy gluing of RBM castings
4.4.13 Theoretical point
4.4.14 Identification
4.5 Fastening
4.5.1 Bolts
4.5.2 Swaged fastenings
4.5.3 Retaining compound
4.6 Flame cutting
4.7 Welding
4.8 Hardening
4.9 Rail drilling
4.10 Sawing and machining
4.11 Riveting
4.12 Fitting
4.13 Forgings
4.14 Cast iron blocks
4.15 Cast steel blocks
4.15.1 General
4.15.2 Steel blocks, and steel packing blocks
4.16 Special heel bolt ferrules
4.17 Nylon bushes
4.18 Epoxy gluing of crossings
4.19 Switch assembly
4.20 Crossing assembly
4.21 Tolerances
4.22 Stamping
4.23 Match marking
4.24 Painting and coating
4.25 Final assembly and inspection
4.26 Preparation for dispatch
5 Interfaces
5.1 General
5.2 Operating equipment
5.2.1 General
5.2.2 Operating devices
5.2.3 Operating rodding
5.2.4 In-bearers
5.2.5 Switch locking
5.2.6 Switch detection
5.3 Insulation
5.3.1 General
5.3.2 Insulated joints
5.4 Installation
5.5 Track and structure interfaces
6 Product acceptance
6.1 General
6.2 Type approval
6.3 Certificate of compliance
6.4 Trial assembly
6.5 Assembly maintenance manuals and drawings
6.5.1 Assembly
6.5.2 Maintenance
6.5.3 Manuals and drawings
Appendix A
Cited references in this standard
[Superseded]
Methods for destructive testing of welds in metal, Part 5.1: Macro metallographic test for cross-section examination
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