BSI PD 6705-2:2020
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Structural use of steel and aluminium – Execution of steel bridges conforming to BS EN 1090-2. Guide
Published By | Publication Date | Number of Pages |
BSI | 2020 | 72 |
This part of PD 6705 gives guidance on the use of BS EN 1090‑2:2018 for the execution of all types of steel bridges designed to BS EN 1993.
NOTE As BS EN 1090‑2:2018 contains many clauses which have multiple options or requires additional information, guidance is given in this Published Document to ensure that technically sound choices are made.
This part of PD 6705 specifies appropriate controls on management systems, procedure approval, personnel qualification, process selection, quality of materials and workmanship, inspection, testing and recording.
This part of PD 6705 is applicable to the same scope of application as BS EN 1090‑2:2018 with the following exceptions:
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resistance welding; and
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matters not related to structural integrity, e.g. visual appearance.
The recommendations given in this Published Document are only applicable when the design requirements and recommendations in the following documents have been adopted, where relevant:
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BS EN 1990, Eurocode – Basis of structural design;
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BS EN 1991, Eurocode 1 – Actions on structures;
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BS EN 1993‑2, Eurocode 3 – Design of steel structures – Part 2: Steel bridges;
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BS EN 1994‑2, Eurocode 4 – Design of composite steel and concrete structures – Part 2: General rules and rules for bridges; and
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any UK National Annexes and Published Documents referenced normatively or informatively in the above standards.
This Published Document is prepared for personnel involved in the regulation, design, procurement, fabrication, erection and certification of steel bridges when BS EN 1090‑2:2018 is used as the basis for specifying the execution.
PDF Catalog
PDF Pages | PDF Title |
---|---|
5 | Foreword |
7 | 1 Scope 2 Normative references |
9 | 3 Terms and definitions 4 General 5 Basis for the recommended selections of choice permitted by BS EN 1090-2:2018 5.1 Objectives |
10 | 5.2 Reliability level 5.3 Types of choice in BS EN 1090-2:2018 |
11 | 5.4 Basis for selection of execution class 5.5 Quantified service category |
12 | 5.6 Options 5.7 Additional information |
13 | 6 Specifications and documentation (see BS EN 1090-2:2018, Clause 4) 6.1 Execution class (see BS EN 1090-2:2018, 4.1.2) 6.2 Quality documentation (see BS EN 1090-2:2018, 4.2.1) 6.3 Quality plan (see BS EN 1090-2:2018, 4.2.2 and Annex C) 7 Constituent steel products (see BS EN 1090-2:2018, Clause 5) 7.1 Identification, inspection documents and traceability (see BS EN 1090-2:2018, 5.2) 7.2 Structural steel products (see BS EN 1090-2:2018, 5.3) |
15 | 7.3 Steel castings (see BS EN 1090-2:2018, 5.4) |
16 | 7.4 Welding consumables for weathering steels (see BS EN 1090-2:2018, Table 6 and 7.5.10) 7.5 Bolt assemblies (see BS EN 1090‑2:2018, 5.6) |
17 | 8 Preparation and assembly (see BS EN 1090-2: 2008+A1:2011, Clause 6) 8.1 Identification of components (see BS EN 1090-2:2018, 6.2) 8.2 Marking methods (see BS EN 1090-2:2018, 6.2) 8.3 Quality of thermally cut surfaces (see BS EN 1090-2:2018, 6.4.3) 8.4 Hardness of free edge surfaces (see BS EN 1090-2:2018, 6.4.4) |
18 | 8.5 Flame straightening (see BS EN 1090-2:2018, 6.5.3.1 and 6.5.3.2) |
19 | 8.6 Execution of holing (see BS EN 1090-2:2018, 6.6.3) 8.7 Cut outs (see BS EN 1090-2:2018, 6.7) 8.8 Assembly – Connections for temporary assembly components (see BS EN 1090‑2:2018, 6.9) 8.9 Trial assembly (see BS EN 1090-2:2018, 6.10) |
20 | 9 Welding (see BS EN 1090-2:2018, Clause 7) 9.1 Quality management (see BS EN 1090-2:2018, 7.1, 7.2.2 and 7.3) |
21 | 9.2 Qualification of welding procedures (see BS EN 1090-2:2018, 7.4.1) |
22 | 9.3 Welding co-ordination (see BS EN 1090-2:2018, 7.4.3) 9.4 Preparation and execution of welding (see BS EN 1090-2:2018, 7.5) |
23 | 10 Use of bolting assemblies (see BS EN 1090-2:2018, Clause 8) 10.1 Welding of bolted components (see BS EN 1090-2:2018, 8.2.1) 10.2 Tightening of preloaded bolting assemblies (see BS EN 1090-2:2018, 8.5) |
25 | Table 1 — Torque values for the part turn method: step one Table 2 — Rotation values for the part turn method: step two 11 Erection (see BS EN 1090-2:2018, Clause 9) 11.1 Reference temperature for setting out (see BS EN 1090-2:2018, 9.4.1) 11.2 Use of levelling nuts on foundation bolts (see BS EN 1090-2:2018, 9.5.4) 11.3 Restoration of damage of site (see BS EN 1090-2:2018, 9.6.3) |
26 | 11.4 Use of shims for fit-up and alignment (see BS EN 1090-2:2018, 9.6.5.3 and 11.2.3.5) 12 Surface treatment (see BS EN 1090-2:2018, Clause 10) 12.1 Sealing of enclosed spaces (see BS EN 1090-2:2018, 10.6) 12.2 Repairs after cutting and welding (see BS EN 1090-2:2018, 10.9) 13 Geometrical tolerances (see BS EN 1090-2:2018, Clause 11) 13.1 Special tolerances (see BS EN 1090-2:2018, 11.1 and Annex B) |
27 | 13.2 Functional tolerance class (see BS EN 1090-2:2018, 11.3.2 and Annex B) 13.3 Alternative criteria (see BS EN 1090-2:2018, 11.3.3 and Annex B) 13.4 Geometrical tolerances applicable to bridges (see BS EN 1090-2:2018, Annex B) |
28 | 14 Inspection, testing and correction (see BS EN 1090-2:2018, 7.6 and Clause 12) 14.1 Constituent products/components (see BS EN 1090-2:2018, 5.4, 12.2.1 and 12.2.2) |
29 | Table 3 — Testing and acceptance levels for steel castings 14.2 Geometrical dimensions (see BS EN 1090-2:2018, 12.3) 14.3 Welding (see BS EN 1090-2:2018, 7.6 and 12.4) |
31 | 14.4 Mechanical fastening (see BS EN 1090-2:2018, 12.5) |
32 | 14.5 Erection |
33 | Table 4 — Minimum extent of supplementary NDT of shop welds in steel grades up to and including S355 and QSC F56 |
34 | Table 5 — Adjustments in proportions of supplementary NDT for conditions other than those covered by Table 4 and Table 6 |
35 | Table 6 — Minimum extent of supplementary NDT of shop welds in steel grades up to and including S355 and QSCs F71 to F140 |
36 | Table 7 — Weld acceptance criteria for visual inspection |
39 | Table 8 — Weld acceptance criteria for visual inspection for QSCs F71 to F140 where limits differ from those for F56 in Table 7 |
40 | Table 9 — Weld acceptance criteria for magnetic particle and penetrant testing |
41 | Table 10 — Weld acceptance criteria for ultrasonic testing with limited optional radiographic testing |
43 | Table 11 — Production tests on run off coupon plates |
44 | Annex A (informative) Background to the development of European and International execution standards and their relationship to previous British execution standards |
47 | Annex B (informative) Method of determining QSC and guidance for use in drafting specifications |
49 | Table B.1 — Definition of QSC levels |
52 | Table B.2 — General guide to where highest QSCs might be found in common types of bridge |
53 | Figure B.1 — Method of designation of QSCs for specific zones on drawings Annex C (informative) Explanatory notes on selected recommendations |
56 | Figure C.1 — Definition of plain edge and stress raising zones for machine plasma cut edge surfaces |
59 | Figure C.2 — Examples of effect of lack-of-fit on clamping force and forces in components in pre-loaded joints |
64 | Annex D (informative) Full references of Parts of normative standards not provided in BS EN 1090‑2:2018, Clause 2 |
69 | Bibliography |