Bsi bs en 01537 2013

BS EN 1537:2013 BSI Standards Publication Execution of special geotechnical works — Ground anchors BS EN 1537:2013 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 1537:2013 It supersedes BS EN 1537:2000 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee B/526, Geotechnics A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2013 Published by BSI Standards Limited 2013 ISBN 978 580 69301 ICS 93.020 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2013 Amendments issued since publication Date Text affected BS EN 1537:2013 EN 1537 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM July 2013 ICS 93.020 Supersedes EN 1537:1999 English Version Execution of special geotechnical works - Ground anchors Exécution des travaux géotechniques spéciaux - Tirants d'ancrage Ausführung von Arbeiten im Spezialtiefbau - Verpressanker This European Standard was approved by CEN on May 2013 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 1537:2013: E BS EN 1537:2013 EN 1537:2013 (E) Contents Page Foreword Scope Normative references 3.1 3.2 Terms, definitions and symbols Terms and definitions Symbols 10 4.1 4.2 Information needed for the execution of the work 11 General 11 Special features 11 5.1 5.2 Geotechnical investigation 12 General 12 Specific requirements 12 6.1 6.2 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.2.6 6.3 6.3.1 6.3.2 6.3.3 6.4 6.4.1 6.4.2 6.4.3 6.4.4 6.5 6.5.1 6.5.2 6.5.3 6.5.4 6.5.5 6.5.6 6.5.7 6.6 6.6.1 6.6.2 6.6.3 6.7 Materials and products 13 General 13 Anchor components subject to corrosion protection 13 Tendon 13 Anchor head 14 Coupler 14 Tendon bond length 14 Components in the borehole 14 Compression element of a compression type anchor 15 Corrosion protection of steel tendon and stressed steel components 15 General 15 Temporary ground anchor 15 Permanent ground anchor 16 Grouts for corrosion protection and load transfer 16 Cement grout for temporary anchors 16 Cement grout for permanent anchors inside encapsulations 17 Cement grout for permanent anchors outside encapsulations 17 Resin Grout 17 Other components and materials for corrosion protection barriers 18 Plastic sheaths and ducts 18 Heat shrink sleeves 19 Seals 19 Corrosion protection compounds based on petroleum, waxes or greases 19 Sacrificial metallic coating 19 Other coatings on steel parts 20 Steel tubes and caps 20 Application of corrosion protection 20 General 20 Tendon free and bond lengths 20 Anchor head 21 Corrosion protection system 22 Considerations related to design 23 8.1 Execution 23 Drilling of holes 23 BS EN 1537:2013 EN 1537:2013 (E) 8.1.1 8.1.2 8.2 8.2.1 8.2.2 8.3 8.3.1 8.3.2 8.3.3 8.3.4 8.3.5 8.4 8.4.1 8.4.2 8.4.3 8.4.4 8.4.5 Drilling Methods 23 Tolerances 24 Manufacturing, transport, handling and installation of tendons 25 Manufacture 25 Transport, handling and installation 25 Grouting 26 General 26 Borehole testing 26 Pre-grouting 27 Anchor grouting 27 Post-grouting 28 Stressing 29 General 29 Equipment 29 Stressing procedure 29 Lock off of anchor 30 Stressing of anchors with staggered free lengths 30 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 9.10 Supervision, testing and monitoring 30 General 30 Measurement requirements 31 Datum load 31 Test methods 31 Investigation test 31 Suitability test 32 Acceptance test 32 Evaluation of the apparent tendon free length 32 Supervision of construction and testing 33 Monitoring 33 10 Records 33 11 Special requirements 34 Annex A (informative) Examples of testing corrosion protection 36 Annex B (informative) Guidelines for acceptance criteria for viscous corrosion protection compounds and examples of standards for the testing of material properties 38 Annex C (informative) Corrosion protection systems for temporary and permanent anchors and typical details for permanent anchor heads 39 Annex D (informative) Example of record sheet 45 Annex E (informative) Obligation of the provisions 47 Bibliography 52 BS EN 1537:2013 EN 1537:2013 (E) Foreword This document (EN 1537:2013) has been prepared by Technical Committee CEN/TC 288 “Execution of special geotechnical works”, the secretariat of which is held by AFNOR This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2014, and conflicting national standards shall be withdrawn at the latest by January 2014 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights This document supersedes EN 1537:1999 The remit of CEN/TC 288 is the standardisation of the execution procedures for geotechnical works (including testing and control methods) and of the required material properties CEN/TC 288/WG 14 has been charged with the revision of EN 1537:1999 in the subject area of ground anchors, which includes all anchors that are bonded to the ground by grout and are stressed and tested This standard has been prepared to stand alongside EN 1997-1, Eurocode 7: Geotechnical design — Part 1: General rules, and prEN ISO 22477-5, Geotechnical investigation and testing — Testing of geotechnical structures — Part Design, safety aspects and testing, which were included as the informative Annexes D and E in the previous issue of this standard (EN 1537:1999), were consequently taken out of this present issue Clause 7, “Considerations related to design” of this standard deals only with those design matters that should be taken into account during the execution stage of ground anchors so that the design of the anchor system may be fulfilled In addition, this standard provides full coverage of the construction and supervision requirements The revision of this standard was effected by a working group comprising of delegates from ten countries and the comments of these countries have been taken into account The main amendments are: — definitions and terminology brought into accordance with the definitions and terminology of EN 1997-1:2004, Eurocode 7, in particular with Section 8; — alignment of this European Standard with prEN ISO 22477-5; — structural revisions to match the structure of this standard with that of other standards for special geotechnical works, e.g EN 1536, Execution of special geotechnical work — Bored piles and EN 1538, Execution of special geotechnical work — Diaphragm walls; — general revision in accordance with comments received during the CEN Enquiry, 2010; — update of references As long as EN ISO 22477-5 is not available, national solutions should be implemented for the testing of anchors According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom BS EN 1537:2013 EN 1537:2013 (E) Scope 1.1 This European Standard covers ground anchors grouted into the ground which are stressed and tested They can be used for permanent or temporary applications NOTE For the purpose of this standard the term ‘anchor(s)’ refers to ‘ground anchor(s)’ 1.2 The anchors are designed in accordance with EN 1997-1 and are tested in accordance with prEN ISO 22477-5 1.3 Typical bond and compression type anchors are shown in Figure and Figure 1.4 The term "ground" is taken to encompass soil, rock and fill already in place or existing prior to the execution of the construction work 1.5 The planning and design of ground anchors calls for experience and knowledge in this specialised field 1.6 The installation and testing phases require skilled, qualified labour and supervision 1.7 This standard cannot replace the knowledge of specialist personnel and the expertise of experienced contractors required to apply this standard 1.8 This standard does not address systems such as tension piles, screw anchors, mechanical anchors, soil nails, dead-man anchors or expander anchors as these not fulfil the requirements of this standard Key anchorage point at jack during stressing O-Ring anchorage point at anchor head in service soil/rock tensioning element at anchor head 10 borehole bearing plate 11 debonding sleeve load transfer block 12 tendon structural element 13 fixed length grout body trumpet or anchor head tube 14 free length filling where appropriate Figure — Sketch of a bond type ground anchor — Details of anchor head and head protection omitted BS EN 1537:2013 EN 1537:2013 (E) Key anchorage point at jack during stressing anchorage point at anchor head in service tensioning element at anchor head bearing plate load transfer block structural element trumpet or anchor head tube O - Ring soil/rock 10 borehole 11 debonding sleeve 12 tendon 13 fixed length grout body 14 free length filling where appropriate 15 compression element Figure — Sketch of a compression type ground anchor — Details of anchor head and head protection omitted BS EN 1537:2013 EN 1537:2013 (E) Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies EN 206-1, Concrete — Part 1: Specification, performance, production and conformity EN 447, Grout for prestressing tendons — Basic requirements EN 934-2, Admixtures for concrete, mortar and grout — Part 2: Concrete admixtures — Definitions, requirements, conformity, marking and labelling EN 1992-1-1, Eurocode 2: Design of concrete structures — Part 1-1: General rules and rules for buildings EN 1997-1:2004, Eurocode 7: Geotechnical design — Part 1: General rules EN 1997-2, Eurocode — Geotechnical design — Part 2: Ground investigation and testing EN 10025 (all parts), Hot-rolled products of structural steels EN 10080, Steel for the reinforcement of concrete — Weldable reinforcing steel — General prEN 10138-1, Prestressing steel — Part 1: General requirements EN 10210-1, Hot finished structural hollow sections of non-alloy and fine grain steels — Part 1: Technical delivery conditions EN 10219-1, Cold formed welded structural hollow sections of non-alloy and fine grain steels — Part 1: Technical delivery conditions EN 10219-2, Cold formed welded structural hollow sections of non-alloy and fine grain steels — Part 2: Tolerances, dimensions and sectional properties EN ISO 12944-5, Paints and varnishes — Corrosion protection of steel structures by protective paint systems — Part 5: Protective paint systems (ISO 12944-5) prEN ISO 22477-5, Geotechnical investigation and testing — Testing of geotechnical structures — Part 5: Testing of anchorages (ISO/DIS 22477-5) 1) ETAG 013, Post-tensioning kits for prestressing of structures Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply 3.1.1 anchor head fr: tête d'ancrage de: Ankerkopf element of a ground anchor which transmits the tensile load from the tendon to the bearing plate or the structure 1) In preparation BS EN 1537:2013 EN 1537:2013 (E) 3.1.2 anchor system fr: système d’ancrage de: Ankersystem system comprising specific components and materials which collectively form the ground anchor 3.1.3 acceptance test fr: essai de réception de: Abnahmeprüfung load test to confirm that each anchor conforms with the acceptance criteria 3.1.4 apparent tendon free length fr: longueur libre équivalente de l’armature de: Rechnerische freie Stahllänge length of tendon which is estimated to be fully decoupled from the surrounding grout and is calculated from the load-elastic displacement data following testing 3.1.5 borehole diameter fr: diamètre de forage de: Bohrlochdurchmesser diameter of a borehole as defined by the drill bit or casing diameter, excluding any enlargements 3.1.6 compression type anchor fr: tirant élément de compression de: Druckrohranker ground anchor, the load of which is transferred via a decoupled steel tendon down to the bottom of the borehole, and from there via a compression element and the borehole grout into the ground 3.1.7 compression element length fr: longeur d’élément de compression de: Druckrohrlänge length of the compression element for load transfer of a compression type anchor 3.1.8 coupler fr: coupleur de: Koppelelement device for joining the lengths of bar or strand which comprise an anchor tendon 3.1.9 critical creep load fr: traction critique de fluage de: Kritische Kriechkraft anchor load corresponding to the end of the first linear part of a plot of anchor load against creep rate 3.1.10 datum load fr: traction de référence de: Vorbelastung level of anchor load from which the anchor head displacement is measured during a stress test BS EN 1537:2013 EN 1537:2013 (E) Table C.2 — Examples of corrosion protection systems for permanent anchors Verification of protection offered All corrosion protection systems are subjected to test(s) to verify the competence of the system The results from these tests are documented and made available for inspection A single corrosion protection system implies that one physical barrier against corrosion is provided for the tendon A double corrosion protection system implies the supply of two barriers where the purpose of the outer second barrier is to protect the inner barrier against the possibility of damage during tendon handling and installation Where only a single protective barrier is provided in the tendon bond length, the integrity of this barrier can be checked by an in situ test such as a falling head water test Tendon bond length Protective barriers offered in situ The encapsulation can consist of one of the following: a) a single corrugated plastic duct containing the tendon and cement grout; a) one plastic duct; b) two concentric corrugated plastic ducts containing the tendon, fully pre-grouted (with cement or resin) within the core and the annulus between the ducts prior to installation; b) two plastic ducts; c) a single corrugated plastic duct containing a bar tendon or multi-element tendon and pre-grouted with cement grout A minimum cover of mm is provided between the duct and bar The bar tendon has a continuous ribbed outer surface The crack width of the cement grout between the duct and the bar does not exceed 0,1 mm under service loading; c) internal cement grout and surrounding plastic duct; d) a single steel or corrugated plastic tube-a-manchette duct not less than mm thick, surrounded by a minimum of 20 mm grout cover injected under a pressure of not less than 500 kPa at intervals along the tube-a-manchette no greater than metre A minimum cover of mm is provided between the duct and the tendon elements The crack width of this cement grout does not exceed 0,2 mm under service loading; d) internal cement grout and surrounding steel or plastic duct; e) a single corrugated steel duct (compression tube) closely surrounding a greased steel tendon The duct and plastic cap at the restraining nut are protected by the surrounding cement grout having a thickness of not less than 10 mm, and where the crack widths not exceed 0,1 mm under service loading e) steel duct and surrounding cement grout Tendon free length The protection system allows free movement of the tendon within the borehole This can be achieved by one of the following: — a plastic sheath to individual tendon elements filled completely with flexible corrosion protection compound plus the inclusion of A, B, C or D below; — a plastic sheath to individual tendon elements filled completely with cement grout plus A or B below; — a common plastic sheath for multiple tendon elements filled completely with cement grout plus B A common plastic sheath or duct filled with flexible corrosion protection compound B common plastic sheath or duct sealed at the ends against ingress of water C common plastic sheath or duct filled with cement grout D common steel duct filled with dense cement grout A lubricant or bond free contact is present within either the individual sheaths or the common sheath to ensure free movement of the tendon(s) during stressing Transition between anchor head and free length A coated, grouted or cast-in metal sleeve or fixed plastic duct is sealed or welded to the anchor head It is then sealed to the free length sheath or duct and filled with corrosion protection compound, cement or resin Anchor head A coated and/or galvanised metal cap with a minimum mm wall thickness or a rigid plastic cap with a minimum mm wall and 10 mm flange thickness is connected to the bearing plate and, if removable, it is filled with a flexible corrosion protection compound and sealed with a gasket If non-removable it can be filled with cement or resin 40 BS EN 1537:2013 EN 1537:2013 (E) a) Bar anchor single corrosion protection b) Bar anchor double corrosion protection Key protection cap filled with anti-corrosion compound free length conic bolt 10 fixed length bearing plate 11 corrosion protection compound steel tube 12 sealing O-ring drilling hole 13 smooth plastic sheathing around ribbed plastic sheath grout 14 ribbed plastic sheathing pre-filled with grout smooth plastic sheathing 15 centraliser ribbed bar Figure C.1 – Examples of single and double corrosion protection for a ribbed bar anchor 41 BS EN 1537:2013 EN 1537:2013 (E) a) Strand anchor single corrosion protection b) Strand anchor double corrosion protection Key protection cap filled with anti-corrosion compound 10 greased and sheathed strand in free length only part wedge 11 free length bearing plate 12 fixed length steel tube 13 ribbed plastic sheathing packer 14 factory injected grout O-Ring 15 secondary grout or anti-corrosion compound applied in situ borehole 16 spacer borehole grout 17 centraliser smooth plastic sheathing in free length only 18 seal and end cap Figure C.2 — Examples of single and double corrosion protection for a strand anchor 42 BS EN 1537:2013 EN 1537:2013 (E) Key restressable anchor head steel bearing plate and trumpet painted with epoxy paint corrosion protection compound injected before bedding bearing plate and trumpet blinding concrete corrosion protection compound in-fill injected after stressing plastic coated steel removable cap with gasket and clips protected strand tendon epoxy resin plug rubber seal 10 mild steel flanged tube set in blinding concrete and cast into reinforced concrete slab 11 cement/Bentonite grout 12 hard plastic tube over free length 13 mild steel trumpet 14 load transfer block 15 epoxy resin bedding Figure C.3 – Example of double corrosion protection detail for a strand anchor at the head 43 BS EN 1537:2013 EN 1537:2013 (E) Key distribution plate steel bearing plate and trumpet painted with epoxy paint corrosion protection compound injected before bedding bearing plate and trumpet blinding concrete corrosion protection compound in-fill injected after stressing plastic coated steel removable cap with gasket and clips protected mono-bar steel tendon epoxy resin plug rubber seal 10 mild steel flanged tube set in blinding concrete and cast into reinforced concrete slab 11 cement/Bentonite grout 12 hard plastic tube over free length 13 mild steel trumpet 14 load transfer block 15 epoxy resin bedding Figure C.4 – Example of double corrosion protection detail for a bar anchor at the head 44 BS EN 1537:2013 EN 1537:2013 (E) Annex D (informative) Example of record sheet RECORD SHEET FOR ANCHORS Doc 01) Contract 02) Location 03) Anchor Type/DWG 04) Anchor No Drilling 101) Entry position X/Y m 102) Entry Level Z m 103) Direction N/E ° 104) Inclination (Horiz) ° 105) Drill method 106) Hole diameter mm 107) Overall length m 108) Cased from/to m 109) Flushing medium 110) Groundwater level m 111) Ground characteristics 112) Pre-grouting (if any) 113) Testing 114) Drill Date Tendon 201) Tendon types 202) No./D /mm 203) Tendon area At mm 204) Yield stress fy N/mm 205) Characteristic tensile strength of the tendon ftk N/mm 206) Elastic Modulus Et N/mm 207) Tendon bond length Ltb m 208) Tendon free length Ltf m 209) External length of tendon Le m 210) Overall length LA m 2 211) Protection along the bond length 212) Protection along the free length 45 BS EN 1537:2013 EN 1537:2013 (E) 213) Spacers along the bond length 214) Spacers along the free length 215) Centralisers along the bond length 215) Centraliser along the free length 217) Grouting ducts Grouting 301) Cement type 302) Admixtures 303) W/C 304) Cement consumption 305) Grouting pressure 306) Post-grouting (if any) NOTES Operators: 46 kg MPa BS EN 1537:2013 EN 1537:2013 (E) Annex E (informative) Obligation of the provisions The provisions are marked corresponding to their obligation: — (RQ) : Requirement; — (RC) : Recommendation; — (PE) : Permission; — (PO) : Possibility and eventuality; — (ST) : Statement Scope 1.1 – 1.8 4.2.4 (ST) Normative references (RQ) Geotechnical Investigation 6.1.5 (RQ) 6.2 Anchor components subject to corrosion protection 5.1 General 6.2.1 Tendon (ST) 5.1.1 (RQ) Terms, definitions and symbols 5.1.2 (RQ) 5.1.3 (RQ) 3.1 Terms and conditions 5.1.4 (RQ) 3.1 (ST) 3.1.1-3.1.24 (ST) 3.2 Symbols (ST) Information needed for the execution of the work 4.1 General 4.1.1 (RQ) 4.1.2 (RQ) 5.2 Specific requirements 5.2.1 (RQ) 5.2.2 (PO) 5.2.3 (RC) 5.2.4 (RC) 5.2.5 (RC) 5.2.6 (RC) 5.2.7 (RC) Materials and products 6.1 General 4.2 Special features 6.2.1.1 (RQ) 6.2.1.2 (PE) 6.2.2 Anchor head 6.2.2.1 (RQ) 6.2.2.2 (RQ) 6.2.2.3 (RQ) 6.2.3 Coupler 6.2.3.1 (RQ) 6.2.3.2 (RC) 6.2.3.3 (RQ) 6.2.3.4 (RQ) 6.2.4 Tendon bond length 6.2.4.1 (RQ) 6.1.1 (RQ) 6.2.4.2 (PE) (RQ) 4.2.1 (ST) 6.1.2 (RQ) 6.2.4.3 4.2.2 (RQ) 6.1.3 (RQ) 4.2.3 (RQ) 6.1.4 (RQ) 6.2.5 Components in the borehole 47 BS EN 1537:2013 EN 1537:2013 (E) 6.2.5.1 (RQ) 6.4.1.7 (RQ) 6.5.1.5 (RQ) 6.2.5.2 (RC) 6.4.1.8 (RQ) 6.5.1.6 (RQ) 6.2.5.3 (RQ) 6.4.1.9 (PE) 6.5.1.7 (RQ) 6.2.5.4 (RC) 6.4.1.10 (RQ) 6.5.1.8 (RQ) 6.2.5.5 (RQ) 6.4.1.11 (RC) 6.5.1.9 (RQ) 6.4.1.12 (PE) 6.5.1.10 (RC) 6.5.1.11 (RQ) 6.5.1.12 (RC) 6.5.1.13 (RQ) 6.2.6 Compression element of a compression type anchor 6.2.6.1 (ST) 6.2.6.2 (RQ) 6.2.6.3 (RQ) 6.2.6.4 (RQ) 6.4.2 Cement grout for permanent anchors inside encapsulations 6.4.2.1 (RQ) 6.4.2.2 (RQ) 6.4.2.3 (RQ) 6.3 Corrosion protection of steel tendon and stressed steel components 6.4.2.4 (PE) 6.4.2.5 (RC) 6.3.1 General 6.4.2.6 PO) 6.4.2.7 RQ) 6.3.1.1 (RQ) 6.3.1.2 (RQ) 6.3.1.3 (RQ) 6.3.2 Temporary ground anchor 6.3.2.1 6.3.2.2 6.3.2.3 6.3.2.4 (RQ) (RQ) (RC) (RQ) 6.3.3 Permanent ground anchor 6.3.3.1 6.3.3.2 (RQ) (RQ) 6.4 Grouts for corrosion protection and load transfer 6.4.1 Cement grout for temporary anchors 6.4.1.1 6.4.3 Cement grout for permanent anchors outside encapsulations 6.4.3.1 (RQ) 6.4.3.2 (RQ) 6.4.3.3 (RQ) 6.4.3.4 (PE) 6.4.3.5 (PE) 6.4.4 Resin grout 6.5.2 Heat shrink sleeves 6.5.2.1 (PE) 6.5.2.2 (RQ) 6.5.2.3 (RQ) 6.5.2.4 (RQ) 6.5.3 Seals (RQ) 6.5.4 Corrosion protection compounds based on petroleum, waxes or greases 6.5.4.1 (RQ) 6.5.4.2 (RQ) 6.5.4.3 (PE) 6.5.4.4 (PE) 6.5.5 Sacrificial metallic coating 6.4.4.1 (PE) 6.4.4.2 (RQ) 6.4.4.3 (PE) 6.5 Other components and materials for corrosion protection barriers (RQ) 6.5.1 Plastic sheathes and ducts 6.5.5.1 (RQ) 6.5.5.2 (PE) 6.5.5.3 (RQ) 6.5.6 Other coatings on steel parts 6.5.6.1 (PE) 6.5.6.2 (PE) 6.5.6.3 (RQ) 6.4.1.2 (RQ) 6.4.1.3 (RQ) 6.5.1.1 (RQ) 6.5.6.4 (PE) 6.4.1.4 (RQ) 6.5.1.2 (RQ) 6.5.6.5 (PE) 6.4.1.5 (RQ) 6.5.1.3 (RQ) 6.4.1.6 (PE) 6.5.1.4 (RQ) 48 6.5.7 Steel tubes and caps BS EN 1537:2013 EN 1537:2013 (E) 6.5.7.1 (PO) 6.7.1 (RQ) 8.1.2.1 (RQ) 6.5.7.2 (PE) 6.7.2 (RQ) 8.1.2.2 (RC) 6.5.7.3 (PE) 6.7.3 (RC) 8.1.2.3 (RC) 6.5.7.4 (RC) 6.7.4 (RQ) 8.1.2.4 (RC) 6.5.7.5 (RQ) 6.7.5 (RQ) 8.1.2.5 (RC) 6.5.7.6 (RQ) 6.7.6 (RQ) 8.1.2.6 (RQ) 6.5.7.7 (RQ) 6.7.7 (RC) 8.1.2.7 (RC) 6.6 Application of corrosion protection 6.7.8 (RQ) 6.7.9 (RC) 8.2 Manufacturing, transport, handling and installation of tendons 6.6.1 General 6.7.10 (RC) 6.7.11 (RC) 8.2.1 Manufacture 6.7.12 (RC) 8.2.1.1 (RQ) 6.7.13 (RC) 8.2.1.2 (RQ) Considerations related to design 8.2.1.3 (RQ) 8.2.1.4 (RQ) 7.1 (RC) 8.2.1.5 (RC) 7.2 (RC) 7.3 (RC) 8.2.2 Transport, handling and installation 7.4 (RC) 8.2.2.1 (RQ) 7.5 (RQ) 8.2.2.2 (RC) 7.6 (RQ) 8.2.2.3 (RC) Execution 8.2.2.4 (RC) 8.1 Drilling of holes 8.2.2.5 (RC) 8.2.2.6 (RC) 8.2.2.7 (RC) (RC) 6.6.1.1 (RQ) 6.6.1.2 (RQ) 6.6.1.3 (RQ) 6.6.2 Tendon free and bond lengths 6.6.2.1 (RQ) 6.6.2.2 (PE) 6.6.2.3 (RQ) 6.6.2.4 (RQ) 6.6.2.5 (RQ) 6.6.2.6 (RQ) 6.6.2.7 (RQ) 6.6.3 Anchor head 8.1.1 Drilling methods 6.6.3.1 (RQ) 6.6.3.2 (ST) 8.1.1.1 (RQ) 8.2.2.8 6.6.3.3 (RC) 8.1.1.2 (RQ) 8.3 Grouting 6.6.3.4 (PE) 8.1.1.3 (RC) 6.6.3.5 (PE) 8.1.1.4 (RC) 6.6.3.6 (RQ) 8.1.1.5 (RQ) 8.3.1.1 (RQ) 6.6.3.7 (RQ) 8.1.1.6 (PO) 8.3.1.2 (ST) 6.6.3.8 (RQ) 8.1.1.7 (RC) 8.3.2 Borehole testing 6.6.3.9 (RQ) 8.1.1.8 (RC) 6.6.3.10 (RQ) 8.1.1.9 (RQ) 6.6.3.11 (RQ) 8.1.1.10 (PO) 8.3.3 Pre-grouting 6.6.3.12 (RQ) 8.1.1.11 (RQ) 8.3.3.1 General 6.7 Corrosion protection system 8.1.2 Tolerances 8.3.1 General 8.3.2 8.3.3.1.1 (RQ) (RC) 49 BS EN 1537:2013 EN 1537:2013 (E) 8.3.3.1.2 (RC) 8.3.3.1.3 (RC) 8.3.3.2 Pre-grouting of rock 8.3.3.2 (ST) 8.3.3.3 Pre-grouting of soil 8.4.3 Stressing procedure 8.4.3.1 (RQ) 8.4.3.2 (RQ) 8.4.3.3 (RC) 8.4.3.4 (RC) 8.4.3.5 (RC) 8.3.3.3.1 (ST) 8.4.3.6 (PO) 8.3.3.3.2 (PO) 8.4.3.7 (PO) 8.3.3.3.3 (RC) 8.4.3.8 (RQ) 8.3.4 Anchor grouting 8.4.3.9 (RQ) 8.4.4 Lock off of anchor 8.3.4.1 (RC) 8.3.4.2 (RQ) 8.4.4.1 (ST) 8.3.4.3 (RC) 8.4.4.2 (RQ) 8.3.4.4 (RQ) 8.4.4.3 (RQ) 8.3.4.5 (RQ) 8.3.4.6 (PO) 8.4.5 Stressing of anchors with staggered free lengths 8.3.4.7 (RC) 8.3.4.8 (RC) 8.3.4.9 (RQ) 8.3.4.10 (PE) 8.3.4.11 (PE) 8.3.4.12 (RQ) 8.3.5 Post-grouting 8.4.5.1 (RQ) 8.4.5.2 (RQ) Supervision, testing and monitoring 9.1 General 9.5.1 (PO) 9.5.2 (RC) 9.5.3 (RC) 9.5.4 (RQ) 9.5.5 (RC) 9.5.6 (PE) 9.5.7 (RC) 9.5.8 (RQ) 9.6 Suitability test 9.6.1 (RC) 9.6.2 (RC) 9.6.3 (RQ) 9.6.4 (ST) 9.7 Acceptance test 9.7 (RQ) 9.8 Evaluation of the apparent tendon free length 9.8.1 (ST) 9.8.2 (ST) 9.8.3 (PE) 9.8.4 (PO) (RC) 9.1.1 (ST) 9.8.5 9.1.2 (ST) 9.9 Supervision of construction and testing 8.3.5.1 (PE) 9.1.3 (ST) 8.3.5.2 (PO) 9.1.4 (ST) 9.9.1 (RQ) 8.3.5.3 (RC) 9.1.5 (RQ) 9.9.2 (RQ) 8.3.5.4 (PE) 9.1.6 (RQ) 9.10 Monitoring 8.4 Stressing 9.2 Measurement requirements 8.4.1 General 9.10.1 (PO) 9.10.2 (PO) 9.10.3 (RQ) 9.10.4 (RC) 9.10.5 (RC) 9.4 Test methods 9.10.6 (RC) 9.4 10 Records 9.2 8.4.1.1 (RQ) 8.4.1.2 (RQ) (ST) 9.3 Datum load 9.3 (RQ) 8.4.2 Equipment 8.4.2.1 (RQ) 8.4.2.2 (RC) 8.4.2.3 (RC) 50 (ST) 9.5 Investigation test 10.1 (RQ) BS EN 1537:2013 EN 1537:2013 (E) 10.2 (RQ) 10.3 (RQ) 10.4 (RQ) 10.5 (RQ) 10.6 (RQ) 10.7 (RC) 11 Special requirements 11.1 (RQ) 11.2 (RQ) 11.3 (RQ) 11.4 (RQ) 11.5 (RQ) 51 BS EN 1537:2013 EN 1537:2013 (E) Bibliography [1] EN 445, Grout for prestressing tendons — Test methods [2] EN 1990, Eurocode — Basis of structural design [3] EN 1991-1-1, Eurocode 1: Actions on structures — Part 1-1: General actions — Densities, self-weight, imposed loads for buildings [4] EN 1993-1-1, Eurocode 3: Design of steel structures — Part 1-1: General rules and rules for buildings [5] EN 1993-5, Eurocode — Design of steel structures — Part 5: Piling [6] EN 50162, Protection against corrosion by stray current from direct current systems 52 This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions Our 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