BS 6779-1:1998:2003 Edition
$215.11
Highway parapets for bridges and other structures – Specification for vehicle containment parapets of metal construction
| Published By | Publication Date | Number of Pages |
| BSI | 2003 | 74 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 7 | Introduction 1 Scope |
| 8 | 2 References 2.1 Normative references 2.2 Informative references 3 Definitions 3.1 vehicle restraint system 3.2 highway parapet 3.3 safety fence 3.4 vehicle parapet 3.5 vehicle pedestrian parapet 3.6 front face of a parapet 3.7 plinth 3.8 main structure 3.9 adjoining paved surface 3.10 attachment system |
| 9 | 3.11 anchorage 3.12 datum for height considerations 3.13 effective longitudinal members 3.14 non-effective longitudinal member 3.15 traffic face of a parapet 3.16 infilling panel 3.17 vertical infill bar 3.18 safety barrier 3.19 transition system 3.20 wheel penetration |
| 10 | 4 Symbols 5 Designation of vehicle parapets |
| 11 | Table 1 – Designation of vehicle parapets 6 General design 6.1 Levels of containment |
| 12 | 6.2 Minimum height 6.3 Freedom from projections and depressions |
| 13 | 6.4 Durability |
| 15 | 6.5 Requirements at joints and at ends of parapets |
| 18 | 6.6 Main structure, anchorages, attachment systems, bedding and plinths |
| 19 | 6.7 Parapets of open-framed design 7 Materials 7.1 Steel construction |
| 20 | Table 3 – Materials of construction for steel parapets |
| 21 | 7.2 Aluminium construction |
| 23 | Table 4 – Materials of construction for aluminium alloy parapets |
| 24 | 8 Additional design requirements for parapets for particular applications 8.1 General requirements for infilling and additional members 8.2 Requirements for particular types of infilling |
| 25 | 8.3 Applications not over or adjacent to railways 8.4 Applications over or adjacent to railways |
| 26 | Table 5 – Minimum requirements for construction of parapets over or adjacent to railways |
| 27 | 9 Construction 9.1 Design requirements |
| 29 | Table 6 – Limit state design information |
| 30 | Table 7 9.2 Design resistance value Table 8 |
| 31 | 9.3 Verification of design adequacy 9.4 Workmanship, inspection and testing |
| 35 | 9.5 Tolerances 9.6 Fastenings |
| 36 | 9.7 Storage and transportation 9.8 Installation and site workmanship 9.9 Identification marking of parapet system |
| 37 | 9.10 Inspection 9.11 Repair 10 Performance 10.1 Type tests for parapet design |
| 42 | Annex A (informative) Guidance on levels of containment and derivation of theoretical design forces |
| 44 | Figure A.1 – Dynamic testing |
| 45 | Figure A.2 – Variation of lateral impact force |
| 46 | Figure A.3 – Variation of lateral impact force Figure A.4 – Variation of lateral impact force |
| 47 | Figure A.5 – Variation of lateral impact force Figure A.6 – Variation of lateral impact force |
| 48 | Figure A.7 – Variation of lateral impact force |
| 49 | Table A.1 – Theoretical mean impact force for a 90° impact from a 30�t vehicle |
| 50 | Figure A.8 – Theoretical mean lateral impact forces for varying |
| 51 | Annex B (informative) Detailed design recommendations for new designs of post and rail configurations� B.1 Limiting dimensions for metal parapets Table B.1 – Designations and limiting dimensions B.2 Design criteria for components of metal parapets B.2.1 General Table B.2 – Nominal loads for parapets of tested configuration |
| 52 | B.2.2 Strength of supporting posts B.2.3 Strength and continuity of effective longitudinal members B.2.4 Strength of non-effective longitudinal members |
| 53 | B.2.5 Connections between longitudinal members and supporting posts B.2.6 Vertical bar infilling |
| 54 | Figure B.1 – Vehicle parapet N/1.00/0: limiting dimensions for parapets of tested configuration |
| 55 | Figure B.2 – Vehicle/pedestrian parapet L/1.00/, N/1.00/ and L/1.50/: limiting dimensions for parapets of test… |
| 56 | Figure B.3 – Vehicle/pedestrian parapet L/1.00/V: limiting dimensions for parapets of tested configuration |
| 57 | Figure B.4 – Vehicle/pedestrian parapet over railways N/1.25/ and N/1.50: limiting dimensions for parapets of … |
| 58 | Figure B.5 – Vehicle/pedestrian parapet H/1.5/ |
| 59 | Annex C (informative) Information to be provided by the supplier/purchaser Table C.1 – Information to be supplied by the supplier/purchaser |
| 60 | Annex D (normative) Method for dynamic testing D.1 Dynamic testing D.2 Test parapet D.3 Test area |
| 61 | D.4 Vehicle |
| 62 | Figure D.1 – Typical layout of cameras for recording tests |
| 63 | Figure D.2 – Typical details to be included in the test report |
| 65 | D.5 Propulsion of the vehicle D.6 Test parameters for post and rail type parapets D.6.1 Normal level of containment parapet D.6.2 Low level of containment parapet D.6.3 High level of containment parapet D.7 Test parameters for other types of parapet |
| 66 | D.8 Recording of test data |
| 67 | D.9 Test report D.10 Record of dynamic testing Annex E (normative) Static testing of posts E.1 Test facility |
| 68 | E.2 Load test procedures E.3 Mode of failure E.4 Destructive examination E.5 Recording of test results |
| 69 | Figure E.1 – Typical apparatus for static testing of parapet posts |
| 70 | Annex F Annex deleted |
