SPECIFICATION 835 PROTECTIVE TREATMENT OF STEELWORK Copyright MAIN ROADS Western Australia Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 REVISION REGISTER Clause Number Whole document Reformatted SCO 04/05/2017 835.02 Reference made to AS3894.5 SDSE 02/04/2013 835.25 835.26 New clause added Para 3 amended 835.27 Para 1 amended 835.32.02 1(d) amended, 1(f) added Annexure 835A Treatments 2&4 amended 835.35 Para 5 of Clause 835.35 amended SDSE 22/11/2011 835.02 References - amendments to Standards titles AS 1627.1, 4, 5, 9, & AS/NZS 2312, & APAS 2917F & S SDSE 23/09/2008 Whole document Complete revision of Issue 4.1 to new format MCP 01/08/2006 Description of Revision Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Authorised By Issue Date Page 2 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 CONTENTS Clause 835.01 Page No Scope......................................................................................................................... 4 835.02 References................................................................................................................. 4 835.03 Definitions .................................................................................................................. 5 835.04 – 835.05 NOT USED..................................................................................................... 5 PRODUCTS AND MATERIALS ..................................................................................................... 5 835.06 Coating Systems ........................................................................................................ 5 835.07 General Requirements and Information to be Provided By Contractor ....................... 7 835.08 – 835.24 NOT USED..................................................................................................... 8 OPERATIONS ................................................................................................................................ 8 835.25 Pre Treatment ............................................................................................................ 8 835.26 Surface Preparation ................................................................................................... 9 835.27 Galvanising ................................................................................................................ 9 835.28 Shop Priming ............................................................................................................. 9 835.29 Intermediate Coating ................................................................................................ 10 835.30 Finishing Coats ........................................................................................................ 10 835.31 Finish Colour ............................................................................................................ 11 835.32 Application ............................................................................................................... 11 835.33 Acceptance Testing.................................................................................................. 12 835.34 Protection ................................................................................................................. 13 835.35 Site Repairs ............................................................................................................. 13 835.36 –835.80 NOT USED.................................................................................................... 14 AS BUILT AND HANDOVER REQUIREMENTS .......................................................................... 14 835.81 – 835.90 NOT USED................................................................................................... 14 CONTRACT SPECIFIC REQUIREMENTS ................................................................................... 14 835.91 – 835.99 NOT USED................................................................................................... 14 ANNEXURE 835A ........................................................................................................................ 15 Schedule of Surface Treatments ............................................................................................... 15 Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 3 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 SPECIFICATION 835 PROTECTIVE TREATMENT OF STEELWORK GENERAL 835.01 SCOPE 1. The work under this specification consists of the surface preparation, galvanising and application of coating systems for the protective treatment of steelwork. 2. Annexure 835A contains a list of approved surface treatments for use in the Works. 835.02 Approved Treatments REFERENCES 1. Australian Standards, MAIN ROADS Western Australia Standards and MAIN ROADS Western Australia Test Methods are referred to in abbreviated form (e.g. AS 1234, MRS 67-08-43 or WA 123). For convenience, the full titles are given below: Australian Standards AS 1214 Hot Dip Galvanised Coatings on Threaded Fasteners AS 1580 Methods of Test for Paints and Related Materials AS 1627 Metal Finishing – Preparation and Pre-treatment of Surfaces AS 1627.1 Metal Finishing – Preparation and pretreatment of surfaces – Removal of oil, grease and related contamination. AS 1627.4 Metal Finishing – Preparation and pretreatment of surfaces – Abrasive blast cleaning of steel. AS 1627.5 Metal Finishing – Preparation and pretreatment of surfaces – Pickling. AS 1627.9 Metal Finishing – Preparation and pretreatment of surfaces – Pictorial surface preparation standards for painting steel surfaces. AS/NZS 2310 Glossary of Paint and Painting Terms AS/NZS 2312 Guide to the Protection of structural steel against exterior atmospheric corrosion by use of protective coatings AS 2700 Colour Standards for General Purposes AS 3750.9 Organic Zinc-Rich Primer AS 3750.15 Inorganic Zinc Silicate Paint AS 3894.5 Site testing of protective coatings, Method 5: Determination of surface profile AS 4100 Steel Structures Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 4 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 AS/NZS 4680 Hot-Dip Galvanised (Zinc) Coatings on Fabricated Ferrous Articles Australian Paint Approval Scheme APAS 2901 Latex coating for protection of steel APAS 2908 Inorganic zinc coating for protection of steel APAS 2916 Organic zinc rich coating for protection of steel APAS 2917 Catalysed polyester and vinylester coating for protection of steel APAS 2917F Catalysed polyester coating for protection of steel-freshwater immersion APAS 2917S Catalysed polyester coating for protection of steel-salt water immersion APAS 2919 Catalysed acrylic coating for protection of steel APAS 2971 Epoxy 2-pack durable primer for protection of steel in atmosphere Other Standards BS 3900 British Standard 3900 – Methods of Test for Paints 835.03 DEFINITIONS 1. Definitions of painting terms contained in AS 2310 shall apply where used in the Specification or when used in relation to the Works. Terms 2. Unless otherwise specified, all work required to achieve the specified protective treatment of steelwork in the completed structure shall be carried out in accordance with the recommended procedures and guidelines set out in AS 2312. Procedures 835.04 – 835.05 NOT USED PRODUCTS AND MATERIALS 835.06 COATING SYSTEMS 835.06.01 GALVANISING 1. Galvanised coatings shall be carried out in accordance with AS 4680 subject to the adoption of surface preparation or other procedures where necessary to avoid: a. brittle, uneven and/or loosely adhering coatings on flame cut edges; b. pin-holes in galvanised coatings along welds; and c. white rust, ferrous rust and other surface contamination or stains which diminish the appearance or function of the galvanised coating. 2. At least 7 days prior to the application of the galvanised coating, the Contractor shall submit to the Superintendent details of procedures which eliminate the above coating deficiencies. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] HOLD POINT Page 5 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 835.06.02 PAINT COATING SYSTEMS FOR STEEL 1. After priming, permanently exposed surfaces of un-galvanised steelwork shall be painted with an intermediate coat of epoxy micaceous iron oxide paint (E-MIO) followed by finishing coats of catalysed acrylic paint in accordance with APAS 2919. 2. The Contractor shall also carry out protective treatment on site using epoxy rich zinc primer conforming to AS 3750.9 for areas of steel members which have been site welded. Refer also Clause 835.35. 3. Each coating type shall be of a different colour or shade to ensure adequate coverage. 4. Surface treatment shall be in accordance with the requirements of AS 2312 except as varied by this Specification. 835.06.03 SPECIAL AREAS 1. Areas In Contact With Concrete Areas of steelwork in contact with concrete in the completed structure shall receive the same surface preparation and shop applied coatings as that employed on adjacent exposed areas for a minimum distance of 50mm from the exposed surface. Areas further than 50mm from an exposed surface shall be left unpainted. (Note: Inorganic zinc silicate is not recommended for casting in concrete). 2. Friction-Type Bolted Joints The faying surfaces of friction-type bolted connections designed to AS 4100 shall be treated as follows: a. Galvanised Members The faying surfaces on galvanised members shall be abraded by means of a flexible rubber backed grinding disc prior to on-site delivery and allowed to weather. Alternatively, the faying surfaces shall be abraded by a light "brush off" abrasive blast clean. b. Painted Members Irrespective of the coating system used elsewhere on the members, the coating system used on the faying surfaces be the following: shall Abrasive blast cleaned to AS 1627.4 Class 3 Surface profile 25 to 35 microns Application of 1 coat of inorganic zinc primer conforming to AS 3750.15 Type 4 and APAS 2908 with minimum dry film thickness of 75 microns. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 6 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 3. Hollow Members The treatment of hollow members shall be as follows: a. Galvanised Members Internal surfaces of galvanised members shall be galvanised according to AS 4680. b. Painted Members The inner surfaces of fully sealed hollow sections shall receive no protective treatment except that all surfaces shall be dry and free of all loose materials. 4. Site Welded Connections Where surfaces are to be welded all surface protection shall be removed for a minimum distance of 100 mm from the edge to be welded in order to prevent harmful effects to welders or to the quality of welds. Reinstatement is in accordance with Clause 835.35. 835.07 GENERAL REQUIREMENTS AND INFORMATION TO BE PROVIDED BY CONTRACTOR 835.07.01 SHOP AND FIELD TREATMENT 1. Shop treatment shall comprise the galvanising or the abrasive blast cleaning of all surfaces plus the application of all paint coatings specified, except that:a. Areas adjacent to field welds shall be masked to leave an uncoated margin of 75 mm for the first coat and an additional 50 mm margin for each subsequent coat. b. The final finishing coat of a multi-coat system on exterior exposed surfaces may be applied on site following the completion of all construction activities that may cause damage to the coatings. 2. Field treatment shall comprise the application of remaining finishing coats and the repair of the protective treatment at all field weld areas and at areas damaged in the course of construction. 3. Prior to the application of any treatment, the Contractor shall submit to the Superintendent the proposed details of work to be carried out by shop treatment and that to be carried out by field treatment. HOLD POINT 4. The details shall include a program of the work covering the following: a. The proposed timing for carrying out repairs to the protective treatment at areas in contact with concrete. b. The proposed timing for carrying out protective treatment to the surfaces which are inaccessible in the completed structure and outside of field welds. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 7 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 835.07.02 PAINT 1. All paints shall be supplied by a single manufacturer. Paints shall be Australian Paint Approval Scheme (APAS) approved products conforming to the nominated APAS Specifications and approved by the Principal for the specified application. 2. At least fourteen days prior to commencing the protective treatment of steelwork, the Contractor shall submit the following details for the Superintendent's approval:- HOLD POINT a. Name of paint manufacturer. b. Product names of paints. c. Technical data sheets and hazard information for all paints. d. Documentary evidence from the manufacturer certifying compliance of paints with relevant APAS Specifications. 835.07.03 TESTING 1. Testing of the paint to assess conformity to Specifications shall be included in the Contractor's Inspection and Test Plan. Inspection and Test Plan 835.07.04 RECORDS 1. The Contractor shall record details of the paints used on the Works. The records shall include, but not be limited to, the following:a. Paint manufacturer's name. b. Product names of all paints. c. Batch numbers of each product. d. Designation of each member or area where each batch of paint is used. 835.08 – 835.24 NOT USED OPERATIONS 835.25 PRE TREATMENT 1. Oil, grease, wax, dirt and other foreign matter shall be removed by cleaning and degreasing of metal surfaces in accordance with AS1627 Part 1 or approved equivalent international standard. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 8 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 835.26 SURFACE PREPARATION 1. The surface treatment for all steel surfaces except those shown on the Drawings to be left unpainted or to be galvanised shall be abrasive blast cleaned followed by shop priming with inorganic zinc silicate paint. Surfaces which are to be left unpainted shall be thoroughly wire brushed and solvent cleaned where necessary to remove loose rust and mill scale and surface contamination. 2. Un-galvanised steel surfaces which are to be painted shall be abrasive blast cleaned to AS 1627.4 Class 2.5 immediately before application of the inorganic zinc silicate paint system. The abrasive may be either metallic or non-metallic but shall be of an approved type to produce a mean surface roughness in the range 30 to 40 microns with no individual reading exceeding 80 microns. The use of coarse steel angular grit or copper slag or any other material which gives a high surface profile or could contaminate the surface is not permitted. 3. The surface roughness shall be determined using a needle type depth micrometer in accordance to AS/NZS 3894.5, Method C. Once a satisfactory pattern of performance has been established, as verified by this method, an optical comparator may be used to check surface profile in accordance to AS/NZS 3894.5, Method B. 4. Steel surfaces which are to be galvanised shall be cleaned and degreased followed by pickling in accordance with AS 1627.5 immediately before galvanising. 835.27 GALVANISING 1. All hot dip galvanising shall conform with the requirements of AS 4680 and shall be clean and smooth and continuous and free from acid spots and cracks and laminations and runs and drips. The coating shall have a minimum system designation of HDG600 in accordance to AS/NZS 2312 for thickness of steel member 6 mm and greater. The coating thickness shall be in accordance with AS 4680 for all structural members less than 6 mm thick. 2. Galvanising of fasteners shall conform with the requirements of AS 1214. 835.28 SHOP PRIMING 835.28.01 NON-GALVANISED STEEL SURFACES 1. All external surfaces of un-galvanised steelwork which are to be painted shall be coated with an approved inorganic zinc silicate primer. 2. The primer shall be applied as soon as possible after blast cleaning before deterioration has taken place and in any case within four hours. 3. Any surface showing deterioration before being primed shall be re-cleaned at the Contractor's expense. 4. The primer shall be an inorganic zinc silicate conforming to Type 3 of AS 3750.15 and shall have a minimum dry film thickness of 75 microns. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 9 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 5. The specified dry film thickness of primer refers to the minimum thickness of primer measured "above peaks" determined in accordance with Clause 835.33. The primer shall be cured in accordance with the manufacturer's published recommendations before application of any subsequent treatment. 6. The primer shall be applied so as to produce a smooth even coating and shall be double lap sprayed into all corners and crevices and on welds and seams. 835.28.02 GALVANISED STEEL SURFACES 1. Galvanised surfaces which are to be painted shall be cleaned and receive one coat of an approved etch primer. 2. The primer shall be a product approved by the Australian Paint Approval Scheme and shall be to Specification APAS 2971. The primer shall be applied and cured in accordance with the manufacturer's published recommendations. 835.28.03 SURFACE PREPARATION BEFORE APPLYING FINISHING COATS 1. Not more than eight (8) hours prior to application of a finishing coat the surface shall be washed with fresh clean water to remove any salt, sand, dust, grit, grease and cement or other contaminants and allowed to dry thoroughly. If necessary suitable solvents shall be used to remove contaminants that are not water soluble and the areas concerned rewashed with water. 835.29 INTERMEDIATE COATING 1. The intermediate coating to all exposed surfaces of steelwork shall be epoxy micaceous iron oxide paint (E-MIO). The paint used shall be a product approved by the Australian Paint Approval Scheme and shall be to Specification APAS 2971. 2. The minimum dry film thickness of the intermediate coating shall be 150 microns. 3. Where the manufacturer's recommended coating thickness for the paint is less than 150 microns the required thickness shall be built up by the application of additional coats. 835.30 FINISHING COATS 1. The finishing coats to all exposed surfaces of steelwork shall be a catalysed acrylic vehicle to Australian Paint Approval Scheme Specification APAS 2919. 2. The catalysed acrylic top coats shall be built up by the application of at least two coats of paint with no single application having a minimum dry film thickness of less than 60 microns. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 10 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 3. The final finishing coat shall be applied on site after the erection of the steelwork, placing of in situ concrete, removal of falsework and all site repairs have been completed. 835.31 FINISH COLOUR 1. The finish colour for all steelwork shall be "Bottle Green" (G11) as defined by AS 2700. 2. All paint pigments shall be suitable for outdoor exposure. 835.32 APPLICATION 835.32.01 TIE COATS 1. When recommended by the manufacturer tie and/or mist coats shall be used to ensure compatibility of coatings. 835.32.02 WEATHER CONDITIONS 1. Painting shall not be carried out under the following climatic conditions: a. When the ambient temperature is below 10oC. b. When the metal surface temperature is above 55oC. c. When the relative humidity is above 85%. d. When the steel temperature is less than 3oC above the dew point. e. When weather conditions are unsuitable such as in high winds or rain. f. When the surface in direct strong sunlight 835.32.03 METHOD OF APPLICATION 1. Tie and finishing coats may be applied by spray brush or roller except that the following conditions shall apply: a. On site application of paint by spray can be carried out only after the Contractor has taken every precaution to ensure that there is no danger of overspray damaging property or passing traffic. b. Special precautions shall be taken to prevent paint staining concrete surfaces. c. Paint thickness specified shall be maintained on all edges by stripe painting. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 11 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 835.33 ACCEPTANCE TESTING 835.33.01 INTRODUCTION 1. Paintwork shall be subject to visual examination and measurement of the dry film thickness after the application of each type of coating. Galvanised surfaces shall be subject to visual examination and measurement of the galvanising thickness as detailed in this clause. 835.33.02 VISUAL EXAMINATION 1. All surfaces shall be subject to a visual examination after blast cleaning and after priming and after application of top coats. Each coat of paint shall be free of cracks and wrinkles and blisters and lumps or any other defects. Whenever these defects occur the whole paintwork system of the affected area shall be removed by abrasive blast cleaning as set out in Clause 835.26 and replaced at the Contractor's expense. 835.33.03 MEASURING INSTRUMENT 1. The Contractor shall measure the dry film thickness using a non-destructive type film thickness gauge. The gauge shall be either: a. A magnetic instrument used in accordance with AS 1580 - "Methods of Test for Paints and Related Materials" Method 108.1 except that gauges of the 'Tinsley' type shall not be used. or b. An instrument operating on the eddy current principle and used in accordance with British Standard 3900 - "Methods of Test for Paints" Part C5. 835.33.04 PROCEDURE 1. In order to determine the dry film thickness of each coating the following procedure shall be adopted: a. Dry film thickness gauges shall be calibrated using shims of known thickness set on the blast reference sample. The calibration procedure shall consist of taking not less than 30 readings on the shim on the reference blast sample and from these determining the mean reading. This mean reading shall be subtracted from the known shim thickness to produce a correction factor which shall be added algebraically to all subsequent readings of dry film paint thickness in order to obtain the true "above peaks" value. Alternatively the gauge itself may be adjusted to yield the appropriate reading equivalent to the known shim thickness. In this case not less than 30 readings shall be taken until the gauge mean reading is equivalent to the known shim thickness. This calibration shall be maintained throughout the duration of the contract except where blasting techniques or procedures are varied in which case the calibration procedure shall be repeated. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 12 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 b. Readings shall subsequently be taken of the total dry film thickness after the application of each type of coating. c. At each stage the Contractor shall use the average reading for that surface. d. The dry film thickness for any coating is the difference between the values obtained for this coating and the average total dry film thickness at the completion of the preceding coating. e. Film thickness measurements will be taken at random to suit the shape of the area being tested and the number of such measurements shall be given as below: i. For large flat surfaces like the webs and flanges of beams the number shall be one per square metre. ii. For hand railing panels the number shall be six per linear metre. iii. For guard railings the number shall be four per linear metre. iv. For guardrail posts the number shall be four per post. 2. For assessing the compliance of a coating with the thickness requirement of this Specification all measured values of the dry film thickness on each surface shall equal or exceed the specified minimum dry film thickness for that coating. Surfaces not meeting this requirement shall receive further coats of primer or finishing coat as appropriate to build up the paint thickness required. 835.34 PROTECTION 1. The paint system shall be fully cured before any components are handled. It shall be properly protected during all transport and erection procedures to maintain it in a clean and undamaged condition. In particular proper precautions are to be taken during lifting operations to ensure a minimum of damage is caused by slinging or guying or supporting or similar operations. 835.35 SITE REPAIRS 1. Repairs to areas of damaged paintwork shall be carried out at the time of application of the final finishing coat except that where corrosion of the steel may occur adequate cleaning and protective priming shall be carried out immediately. 2. Areas of paintwork which have been damaged and areas of site welded connections shall be cleaned by power wire brush to AS 1627 Part 2 Class 3 followed by abrasive paper to provide a surface profile. In addition the edge of the surrounding undamaged paint shall be feathered with abrasive paper. 3. In areas of site welded connections all weld splatter and slag shall be removed by mechanical means and all sharp edges and rough welds shall be rounded off before cleaning. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 13 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 4. The damaged areas and areas of site welded connections shall then be painted as laid down in Clauses 835.28 to 835.30 except that the primer shall be an approved two pack epoxy-zinc-rich coating conforming to Type 2 of AS 3750.9. The paint used shall be a product approved by the Australian Paint Approval Scheme and shall be to Specification APAS 2916. The new paint shall overlap the existing paint by at least 50 mm all round the affected area. 5. Areas of galvanising which have been affected by welding or otherwise damaged shall be thoroughly painted with Zinga Liquid Galvanising or similar approved cold galvanised paint followed by the required amount of finishing paint. 835.36 –835.80 NOT USED AS BUILT AND HANDOVER REQUIREMENTS 835.81 – 835.90 NOT USED CONTRACT SPECIFIC REQUIREMENTS 835.91 – 835.99 NOT USED Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 14 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 ANNEXURE 835A SCHEDULE OF SURFACE TREATMENTS Treatment No. Description of Treatment Surfaces to be treated 1. Galvanise All steel unless otherwise specified 2. Galvanise Epoxy Primer Two Pack Acrylic Top Coat (HDG600P6 of AS/NZS 2312) Kerbside face of guardrails. 3. Abrasive Blast Inorganic Zinc Silicate Prime Coat Epoxy Paint Intermediate Coat Catalysed Acrylic Top Coat Exposed surfaces of structural members 4. Hot metal Spray (for pot bearings only) Exposed surfaces of structural members in severe atmospheres where galvanising is impractical. 5. Single - Coat Inorganic Zinc Silicate Exposed surfaces of structural members where galvanising is impractical. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 15 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 GUIDANCE NOTES FOR REFERENCE ONLY – DELETE GUIDANCE NOTES FROM FINAL DOCUMENT 1. All edits to downloaded Specifications shall be made using Track Changes, to clearly show added/deleted text. 2. If all information relating to a clause is deleted, the clause number should be retained and the words “NOT USED” should be inserted. 3. The proposed documents with tracked changes shall be submitted to the Project Manager for review, prior to printing the final batch of documents. When this final printing is carried out, the tracked changes option is to be turned off. 4. Before printing accept all changes in the document, turn off Track Changes and refresh the Table of Contents. 5. The Custodian of this specification is the Structures Design and Standards Engineer. 1. SYSTEM DESIGN BY CONTRACTOR 1.1 Although there has been a move towards Contractor design of protective systems, there is a concern that this could lead to excessive management problems in the future. Consequently, the Specification has been kept in a prescriptive form as required by AS 2312. 2. SCHEDULED SURFACE TREATMENTS (Annexure 835A) 2.1 Annexure A lists preferences but needs to be modified for each Contract. 2.2 Hot metal spray would be a preferred CONTRACT SPECIFIC REQUIREMENT to be added where required at this stage. 3. CORROSION PROTECTION OF STEEL PILES (Clause 835.91) 3.1 Insert Clause 835.91 where required. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 16 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 CONTRACT SPECIFIC REQUIREMENTS The following clauses are to be placed under the CONTRACT SPECIFIC REQUIREMENTS, as required. After inserting the clause, change the clause number and heading to style “H2 SP” so it appears in the Table of Contents. 835.91 CORROSION PROTECTION OF STEEL PILES 1. Piles shall receive corrosion protection as specified herein and to the extent indicated on the drawings. 2. The corrosion protection system shall be abrasive blast cleaning followed by an approved two-pack epoxy paint system which conforms with APAS 2971. 3. The surface to be painted shall be abrasive blast cleaned as detailed in Clause 835.26 of this Specification. 4. Before painting, the cleaned surface shall be dry and free from dust. Painting shall not take place when climatic conditions are unsuitable as detailed in Clause 835.32.02. The paint shall be applied in one coat to give a total dry film thickness of not less than 400 microns. Coating shall be applied as soon as possible after blast cleaning before deterioration has taken place and in any case within four hours. Any surface showing deterioration before being coated shall be rejected. 5. Acceptance testing of paintwork shall be in accordance with Clause 835.33. A minimum period of seven days shall elapse to permit paint to harden before handling or driving piles. 6. Where piles are to be spliced the corrosion protection treatment shall be omitted or removed for 100 mm each side of the weld. 7. Should pile protection be damaged during pile driving any such operation shall cease to permit reinstatement as specified. Pile driving shall not proceed until the reinstatement compound has cured. 8. Areas of paintwork which have been damaged and areas of site welded connections shall be cleaned and/or repaired as specified in Clause 835.35. Any piles which are to be embedded in pilecaps shall have the corrosion protection removed from the end of the pile to within 50 mm of the surface of the concrete. Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] Page 17 of 18 Specification 835 Protective Treatment of Steelwork – 04/10144 Issued 04/05/2017 AMENDMENT CHECKLIST Specification No. 835 Title: PROTECTIVE TREATMENT OF STEELWORK Revision No: Project Manager: Signature: Date: Checked by: Signature: Date: Contract No: Contract Description: ITEM DESCRIPTION SIGN OFF Note: All changes/amendments must be shown in Tracked Changes mode until approved. 1. Project Manager has reviewed Specification and identified Additions and Amendments. 2. CONTRACT SPECIFIC REQUIREMENTS addressed? Contract specific materials, products, clauses added? (Refer Specification Guidance Notes for guidance). 3. Any unlisted materials/products proposed and approved by the Project Manager? If “Yes” provide details at 16. 4. Standard clauses amended? MUST SEEK approval from Manager Commercial. 5. Clause deletes shows as “NOT USED”. 6. Appropriate INSPECTION AND TESTING parameters included in Spec 201 (Text Methods, Minimum Testing Frequencies verified). 7. ANNEXURES completed (refer Specification Guidance Notes). 8. HANDOVER and AS BUILT requirements addressed. 9. Main Roads QS has approved changes to SMM. 10. Project Manager certifies completed Specification reflects intent of the design. 11. Completed Specification – independent verification arranged by Project Manager. 12. Project Manager’s review completed. 13. SPECIFICATION GUIDANCE NOTES deleted. 14. TABLE OF CONTENTS updated. 15. FOOTER updated with Document No., Contract No. and Contract Name. 16. Supporting information prepared and submitted to Project Manager. Further action necessary: Signed: Document No: DXX#XXXX Contract No: XXX/XX [Contract Name] (Project Manager) Date: Page 18 of 18
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