BS 6779-1:1992

Committees responsible
Foreword
Specification
Section one. General
0. Introduction
1. Scope
2. Definitions
3. Symbols
4. Designation of vehicle parapets
Section two. General design
5. Levels of containment
6. Wind loading
7. Minimum height
8. Minimum section thickness
9. Freedom from projections and depressions
10. Durability and protection
11. Requirements at joints and at ends of parapets
12. Main structure, anchorages, attachment systems,
     bedding and plinths
13. Parapets of open-framed design
Section three. Materials
14. Materials of construction
Section four. Additional design requirements for
parapets for particular applications
15. General requirements for infilling and additional
     members
16. Requirements for particular types of infilling
17. Applications not over or adjacent to railways
18. Applications over or adjacent to railways
Section five. Construction
19. Steel workmanship, inspection and testing
20. Aluminium alloy workmanship, inspection and testing
21. Tolerances
22. Fastenings
23. Storage and transportation
24. Installation and site workmanship
25. Identification marking of parapet system
Section six. Performance
26. Type tests for parapet design
27. Production testing of posts
Appendices
A. Guidance on levels of containment and derivation
     of theoretical design forces
B. Guidance on limit state design
C. Detailed design guidance recommendations for new
     designs based on test configurations
D. Information to be provided by the supplier/
     purchaser
E. Method for dynamic testing
F. Static testing of posts
G. Parapet designs exempted from the dynamic test
     requirements
Tables
1. Designation of vehicle parapets
2. Minimum thickness of members, infill panels and
     other components
3. Materials of construction for steel parapets
4. Materials of construction for aluminium alloys
     parapets
5. Minimum requirements for construction of parapets
     over or adjacent to railways
6. Theoretical mean impact force for a 90 deg impact
     from a 30 t vehicle
7. Values of yfL
8. Values of fk and ym
9. Designations and limiting dimensions
10. Design loads for parapets of tested configuration
Figures
1. Dynamic testing: vehicle dimensions and angle of
     impact
2. Variation of lateral impact force F with mass of
     vehicle m
3. Variation of lateral impact force F with speed of
     vehicle v
4. Variation of lateral impact force F with position
     of centre of gravity c
5. Variation of lateral impact force F with position
     of centre of gravity b
6. Variation of lateral impact force F with sum of
     barrier deflection and depth of vehicle crumpling z
7. Variation of lateral impact force F with angle of
     impact theta
8. Theoretical mean lateral impact forces for varying
     z values for two vehicles
9. Vehicle parapet N/1.00/0: limiting dimensions for
     parapets of tested configuration
10. Vehicle/pedestrian parapet L/1.00&, N/1.00/ and
     L/1.50/: limiting dimensions for parapets of tested
     configuration
11. Vehicle, pedestrian parapet L/1.00/V: limiting
     dimensions for parapets of tested configuration
12. Vehicle/pedestrian parapet over railways N/1.25/
     and N/1.50/: limiting dimensions for parapets of
     tested configuration
13. Vehicle/pedestrian parapet H/1.5/: limiting
     dimensions for parapets of tested configuration
14. Typical layout of cameras for recording tests
15. Typical details to be included in test report
16. Typical apparatus for static testing of parapet
     posts

Design, materials, construction (including storage, transportation and installation) and testing of parapets not less than 12 m long. Low, normal and high levels of containment.