545Protective Coating of Miscellaneous Structural Steel

545.1 Description

This Work consists of coating new steel elements including Bri dge railing, pedestrian railing, drop inlet grates and frames, cattle guard grates, fie ld coating of new steel piling, CWB access panels, gates, headgates, and flapgates, I-beam posts, s afety grates, sole plates, and bearing devices, and miscell aneous steel elements.

545.1.1 Terminology and Standards

The Contractor shall use terminology in accordance with the fo llowing standards: 1. Society for Protective Coat ings (SSPC) Painting Manual Volum e 2; 2. Surface Preparation Standards, Guides, and Specifications, S ection 2 of the SSPC Painting Manual Volume 2 (SSPC-SP); 3. American Architectural Manuf acturer’s Association (AAMA); 4. American Association of State Highway and Transportation Off icial (AASHTO); 5. American Society for Testing and Materials (ASTM); 6. American Institute of St eel Construction (AISC); and 7. National Association of Corrosion Engineers (NACE).

545.2 Materials

The Contractor shall apply the coating system specified within the Contract. If the Contract does not specify a specific coating system, the Contra ctor may select the coating system from Table 545.2:1, “Coating System Selection Matrix.” Table 545.2:1 Coating System Selection Matrix Coating System Color Comments galvanize 3-Coat poly 2-Coat epoxy shop 2-Coat epoxy field 2-Coat acrylic Powder Coat 3-Coat poly 2-Coat acrylic if not galvanized, color (unless otherwise noted in drawings ) 541 544 545 545 545 545 546 546 Specification Section 541.2.5.1 544.2.1 545.2.1 545.2.2 545.2.3 545.2.4 546.2.1 546.2 .2 Element structural steel X X R * metal Bridge railing X R * metal Pedestria n railing X R * drop inlet grates & frames X X X X R * cattle guard grates X X X R safety yellow Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 528 Table 545.2:1 Coating System Selection Matrix Coating System Color Comments CWB Access Panels X X X X X R * Gates X X X X X R interstate green Headgate s & Flapgates** X X X X R ** I-Beam Posts X X X X X R interstate green steel piling X R * sole plates & bearing devices X R * safety grates X X X X X R * Misc. steel X X X X X R * Coating Component Galvanizi ng C inorganic zinc primer C C C organic zinc primer C C C C epoxy intermedi ate C C *** polyurethane topcoat C C epoxy topcoat C C acrylic topcoat C C powder coating C “X” denotes a coating system that i s acceptable for each element. Specific coating systems noted in the Contract Documents supersede the information provi ded in this table. “R” denotes the coating system that is allowable for recoating un less otherwise specified in the Contract Documents. Referen ce 546 “Recoating Structures” f or additional information. All recoating is allow able as field applied. "C" denotes the coating system c omponent, reference specification section for details. * If the Contract does not specify a color, the Contractor shal l use the color Federal Standard 595A Color No. 22563 or approved equal. ** If purchased as an assembly, any corrosion inhibiting coatin g that is provided by the manufacturer is acceptable. *** Intermediate or tie-coat to be provided if recommended by the manufacturer.

545.2.1 Coating System No. 1: Shop Applied 2-Coat with Epoxy T opcoat

The Contractor shall select a complete coating system comprise d of products meeting all Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 529 performance requirements as listed in Table 545.2.1:1, “Accepta ble Product Requirements” below. Testing shall be in accordance with AASHTO R-31. All p roducts in each system shall be from the same manufacturer. All products shall be represent ed on the latest version of the manufacturer’s product data shee t as being suitable for use on Bridges and capable of being applied at the specified dry film thickness requirements in Tab le 545.3.1.2.8:1, “Required Film Thicknesses.” Inorganic Zinc-Rich Primer – Shall achieve minimum SSPC Paint 20 Level 2 requirements for amount of zinc dust in the dry film of equal t o or greater than 77% by weight. Epoxy Topcoat Coat – Shall be a two (2)-component epoxy polyam ide or polyamidoamine coating, includi ng Phenalkamine coatings with mi nimum solids by volume of 65%. Table 545.2.1:1 Acceptable Product Requirements TEST REF. NO. PRODUCT(S) ACCEPTANCE CRITERIA COMMENTS Slip Coefficient ASTM A 325, Appendix A. IOZ Class B, Min. 0.5 Salt Fog Resistance ASTM B 117 P/T (IOZ) (A) No Delamination Allowed (B) Rust – Max creep 4mm, Avg. creep 2mm @5000 Hrs. (C) Blister – Conversion #8 @ 4000 Hrs. Cyclic Weathering Resistance ASTM D 5894 P/T (IOZ) (A) No Delamination Allowed (B) Rust – Max creep 4mm, Avg. creep 2mm @5040 Hrs. (C) Blister – Conversion #9 @ 4032 Hrs. Adhesion Pull-Off Strength ASTM D 4541 IOZ Alone P/T (IOZ) 2.4 MPa (350 psi) 2.4 MPa (350 psi) Freeze-Thaw Stability Pull-Off Strength ASTM D 4541 P/T (IOZ) 2.4 MPa (350 psi) 4.1 MPa (600 psi) 2.4 MPa (350 psi) 4.1 MPa (600 psi) Field History NA P/T (IOZ) Five (5) Bridges with Minimum two (2) year successful field history P = Primer; T = Topcoat, IOZ = Inorganic Zinc Rich Primer Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 530 Primer information for the use of organic zinc for touch-up an d repair is included in Section 546, “Recoating Structures.”

545.2.2 Coating System No. 2: Field Applied 2 Coat with Epoxy Topcoat

The Contractor shall select products meeting all performance r equirements as listed in Table 546.2.2:1, “Acceptable Pro duct Requirements” below. Test ing shall be in accordance with AASHTO R-31. All products used in a system shall be from the same manufacturer. All products shall be represented on the latest version of the manu facturer’s product data sheet as being suitable for use on Br idges and capable of being appli ed at the specified dry film thickness requirements in Table 545.3.1.2.8:1, “Required Film T hicknesses.” Epoxy Organic Zinc-Rich Primer ( used to prime exposed bare ste el areas only, spot prime) shall achieve minimum SSPC Paint 20 Level 2 requirements for amount of zinc dust in the dry film of equal to or greater than 77% by weight. Epoxy Top Coat over existing fi nishes (applied over zinc prime r and other sound existing coatings deemed suitable for over coating by the coating manufa cturer’s representative) shall be a two (2)-component, surface tolerant epoxy coating with min imum solids by volume of 65%. Table 545.2.2:1 Acceptable Product Requirements TEST REF. NO. PRODUCT(S) ACCEPTANCE CRITERIA COMMENTS Salt Fog Resistance ASTM B 117 P/T (OZ) (A) No Delamination Allowed (B) Rust – Max creep 8mm, Avg. creep 4mm @5000 Hrs. (C) Blister – Conversion #7 @ 4000 Hrs. Cyclic Weathering Resistance ASTM D 5894 P/T (OZ) (A) No Delamination Allowed (B) Rust – Max creep 8mm, Avg. creep 4mm @5040 Hrs. (C) Blister – Conversion #8 @ 4032 Hrs. Adhesion Pull-Off Strength ASTM D 4541 OZ Alone P/T (OZ) 4.1 MPa (600 psi) 4.1 MPa (600 psi) Freeze-Thaw Stability Pull-Off Strength ASTM D 4541 P/T (OZ) 2.4 MPa (350 psi) 4.1 MPa (600 psi) Requires same average as adhesion pull-off strength results, with no tests Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 531 Table 545.2.2:1 Acceptable Product Requirements TEST REF. NO. PRODUCT(S) ACCEPTANCE CRITERIA COMMENTS 2.4 MPa (350 psi) 4.1 MPa (600 psi) measuring less than 60% of those results Field History NA P/T (OZ) Five (5) Bridges with Minimum two

545.2.3 Coating System No. 3: Shop or Field Applied 2 - Coat w ith Acrylic Topcoat

The Contractor shall select products meeting all performance r equirements as listed in Table 545.2.1:1, “Acceptable Product Requirements” above for In organic Zinc Rich Primer or Table 545.2.2:1, “Acceptable Product Requirements” for Organic Zinc Rich Primer and

545.2 3:1, “Acceptable Product Requirements” for Acrylic Top Co at below as applicable. It is

Acceptable to use either inorgani c or organic zinc rich primer for 545.2.3 Coating System 3. All products used in a system shall be from the same manufactur er. All products shall be represented on the latest version of the manufacturer’s product data sheet as being suitable for use on Bridges and capable of being applied at the specifie d dry film thickness requirements in Table 545.3.1.2.8:1, “Required Film Thicknesses .” Epoxy Organic Zinc-Rich Primer ( used to prime exposed bare ste el areas) shall achieve minimum SSPC Paint 20 Level 2 r equirements for amount of zinc d ust in the dry film of equal to or greater than 77% by weight (Table 545.2.2:1, “Acceptable Product Requirements”), or; Inorganic Zinc-Rich Primer (us ed to prime exposed bare steel a reas) shall achieve minimum SSPC Paint 20 Level 2 r equirements for amount of zinc d ust in the dry film of equal to or greater than 77% by weight (Table 545.2.1:1, “Acceptable Product Requirements”), and; Acrylic Topcoat (applied as overcoat over sound existing coati ngs deemed suitable for over coating by the coating manu facturer’s representative or fo r repair to the finish of certain items per Section 545, “Protective Coating of Miscellaneous Str uctural Steel;” miscellaneous steel shall be a high performance DTM acrylic coating with mini mum solids by volume of 38%. Suitable for application over zinc rich primers (Table 545.2.1: 1, “Acceptable Product Requirements”). Table 545.2.3:1 Acceptable Product Requirements TEST REF. NO. PRODUCT(S) ACCEPTANCE CRITERIA COMMENTS Adhesion Pull-Off Strength ASTM D 4541 HPA > 500 lbs. One (1) coat applied over blasted steel Flexibility ASTM D 522 HPA Pass: No cracking / flaking 1/8 “ conical mandrel One coat applied over blasted steel Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 532 Table 545.2.3:1 Acceptable Product Requirements TEST REF. NO. PRODUCT(S) ACCEPTANCE CRITERIA COMMENTS Hardness (Pencil) ASTM D 3363 HPA Final Cure: “F” One (1) coat applied over blasted steel Impact ASTM D 2794 HPA > 140 in. lbs. One coat applied over blasted steel HPA = High Performance Acrylic 545.2.4 Coating System No. 4 – Powder Coating The Contractor shall obtain primer and topcoat from one (1) ma nufacturer. The Contractor shall select a coating system that meets the require ments of AAMA 2604.

545.2.5 Galvanizing or Zinc Coating

Reference Section 541.2.5.1, “ Galvanizing or Zinc Coating.”

545.2.6 Submittals

When the Contract requires painting more than 1,500 square fee t of steel surface, the Contractor shall submit a coating Plan 30 Days prior to start o f coating operations. The Project Manager shall have the opti on to waive the coating Plan requirement. In addition to the submittals r equire per Section 106, “Contro l of Materials,” the Contractor shall provide the following submittals to the Projec t Manager at least 30 Days before coating operations: 1. Product data and SDS for each product in the system; 2. Surface preparation requirements; 3. Application instructions: a. Mixing and thinning directions; b. Recommended spray nozzles and pressures; c. Minimum / maximum drying times, including re-coat times for shop or field coatings; d. Temperature requirements; 4. Letter from the manufacturer detailing the coating system co mponents and the compatibility of those components to adjacent Materials includi ng but not limited to: a. Every product in the system (primer, intermediate, topcoat, etc.); b. Any pre-applied or preexisting products (such as existing co atings); c. Any post applied products (su ch as anti-graffiti coating); d. Any modifications to the surf ace preparation or application instructions related to the total system performance; 5. If the color varies from the specified color, the Contractor shall submit color samples on boards at least eight (8) inches by ten (10) inches for revi ew and approval; and 6. Documentation related to Contractor Qualifications per Secti on 546.2.7, “Contractor Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 533 Qualifications.”

545.2.6 1 Certification

Prior to coating application , the Contractor shall submit: 1. Notarized manufacturer’s Cert ificates of Compliance stating that the Materials are the same as those described in the manufacturer’s product data sheets; and 2. Certified test reports from an independent Laboratory perfor med in accordance with AASHTO R-31, showing Acceptable performance results as listed o n the chart in

545.2.6 2 Product Data Sheets

The Contractor shall provide manufacturer’s product data sheet s with each Submittal that shows the following: 1. Mixing and thinning directions; 2. Recommended spray nozzles and pressures; 3. Minimum/maximum drying time, including re-coat times, for sh op or field applied coats; and 4. Manufacturer recommended applic ation procedures, including s urface preparation and temperature requirements.

545.2.7 Contractor Qualifications

When the Contract requires painting more than 1,500 sq ft of s teel surface, the Contractor shall demonstrate qualification by one of the follow ing two (2) methods: Method 1 The Contractor shall obtain SSPC QP 1 certification for field p ainting or either SSPC-QP 3 certification or the AISC Sophisticated Paint Endorsement (SP E) for shop painting. The Contractor shall perform and document QA/QC inspections daily. QA/QC inspection documents shall be electronically submitted to the Project Mana ger on a weekly basis. Method 2 The Contractor shall provide a c oating Plan and provide for NAC E certified inspection (Level 2 minimum). The inspec tion services shall include but n ot be limited to: 1. Surface preparation and cleanliness inspection verifying pro file and appropriate surface preparation. 2. Confirm products match approved submittals and certification letters. Document the batch numbers of all coatings. 3. Inspection of primer coat to i nclude dry film thickness read ings. Review Contractor’s QA/QC reports for environm ental conditions and document. 4. Observe application of stripe coat on the intermediate coat and document environmental readings during the start up of application. Rev iew Contractor’s QA/QC reports. 5. Inspect intermediate coat to include dry film thickness read ings. Review Contractor’s QA/QC reports. 6. Observe start up of finish coat application and document env ironmental conditions. 7. Final inspection to include vi sual inspection for runs, sags , and foreign Material in Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 534 coating. Also perform final dry film thickness inspection. 8. Inspect members after trans portation, prior to subsequent co ating and / or Final Acceptance. 9. Electronically submit interim reports after each inspection to the Project Manager within three (3) Working Days. 10. Electronically submit comprehensive final report including photos to the Project Manager within 14 Days of completion of inspection. Final repo rt shall include QA/QC daily inspections per formed by the Contractor. Any deficiencies shall be corrected and reinspected by the NAC E inspector prior to proceeding. Samples of a coating Plan and QA /QC inspection documents are a vailable on the NMDOT website. Provisions for demonstration of qualifications are Incidental to the performance of the coating, no additional payment shall be made. NMDOT shall be g ranted open access to the coating operation to perform i nspections and to review document ation of Contractor inspections. The Project Manager shall have the option to waive the Contrac tor Qualification requirement for Miscellaneous Structural Steel scope.

545.3 Construction Requirements

545.3.1 Liquid Coating Systems No. 1, No. 2, and No. 3

The Contractor shall apply coatings in conformance with SSPC – PA 1 “Shop, Field and Maintenance Painting of Steel” and with SSPC – PA Guide 13 “Gui de Specification for Application of Coating Systems wi th Zinc-Rich Primers to Steel Bridges” (aka AASHTO/NSBA Steel Bridge Collaboration S 8.1) and the manufacturer’s applic ation instructions.

545.3.1 1 Surface Preparation

The Contractor shall remove contaminants in accordance with SS PC-SP I, or other methods approved by the Project Manager. Surface preparation for all steel elements include in Section 545, “Protective Coating of Miscellaneous Structural Steel” shall be in accordance with SSP C-SP10 / NACE 2 Near White Blast Cleaning: When viewed wit hout magnification shall be fre e of all visible oil, grease, dust, dirt, mill scale, rust, coating, oxides, corrosion products and other foreign matter of at least 95% of each unit area. Staining shall be limited to no more th an five percent (5%) of each unit area, and may consist of light s hadows, slight streaks, or mino r discolorations caused by stains of rust, stains of mill scale, or stains of previously a pplied coatings. Unit area shall be approximately three (3) inch x three (3) inch (nine (9) sq. in. ). Prepared surfaces shall be eval uated using the SSPC-VIS 3 Guid e and Reference Photographs. The Contractor shall provide a current copy of th e SSPC-VIS 3 Guide and Standard to the Project Manager. It shall become the property of the Department. The Contractor shall maintain the steel dust free and prime wi thin eight (8) hours after Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 535 blast cleaning. The Contractor shall re-clean rusted or contam inated surfaces at no additional cost to the Department. The Contractor shall mask areas that r equire field welding before coating. The Contractor shall clean again before applying each subseque nt coat.

545.3.1 2 Coating

545.3.1 2.1 Mixing the Coating

The Contractor shall mix the coating with a power mixer to a s mooth and lump-free consistency, in accordance with the coating manufacturer’s Spec ifications. The Contractor shall mix the coat ing as much as possible in th e original containers and continue mixing until the metallic powder or pigment is in susp ension. The Contractor shall keep mixed primers continuously agitated before and during appl ication.

545.3.1 2.2 Thinning the Coating

The Contractor shall not thin the coatings without the approva l of the Project Manager. If it is necessary to thin the coatings, the Contractor shall thin the Material in accordance with the manufacturer’s recommendations.

545.3.1 2.3 Temperature and Weather Limitations

The Contractor shall only apply the coatings when the ambient air temperature and surface temperature of the steel are both above 50 °F and at le ast five (5) °F above the dew point. The Contractor shall not apply the coatings when there is cond ensation or frost on the metal surfaces. The Contractor shall not apply the coatings when the relative humidity is higher than 85 percent.

545.3.1 2.4 Coating Applications

The Contractor shall not apply coating until the Department ap proves the surface preparation. The Department m ay waive this inspection. A stripe coat of primer and intermediate Material shall be app lied to all edges, corners, seams, crevices, interior angles , junctions of joining members, rivets, bolt heads, nuts and threads, welds and similar irregularities. The stripe coats sh all be of sufficient thickness to completely hide the surface being covered and shall be followed , as soon as practicable, by a full application of the appropriat e coating to its specified th ickness. The Contractor shall repair coated areas where the primer or t opcoat runs, sags or cracks. The Contractor shall not apply any coating until the previous coat has fully cured or per the manufacturer’s application requirements. Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 536 The Contractor shall allow the manufacturer’s minimum recommen ded cure time to lapse between coats. If more than 30 Days elapse between the primer application and the topcoat application, the Contractor shall contact the coating system ma nufacturer for surface preparation recommendations before applying subsequent coats. The Department may Accept minor cosmetic defects in ground lev el miscellaneous Structural Steel components not i n public view, if the defects will not affect durability.

545.3.1 2.5 Required Coating of Components

The Contractor shall apply the primer and topcoat to steel surf aces, except those that will contact elastomeric bearing pads or are subject to sliding and rotational movements. The Contractor shall coat new steel piling from the bottoms of the pier caps to two (2) ft below the finished grade or streambed elevations.

545.3.1 2.6 Coating of Sole Plates for Concrete Bridges

The Contractor shall deliver sole plates to the Project with o ne (1) coat of primer applied to all surfaces except masked-off strips, where the sole plates will be welded to the shoe plates, and surfaces that will c ontact elastomeric bearing pads . Before installation, the Contractor shall clean surfaces that will contact pads in accordance with SSPC-SP 6. The Contractor shall clean off all rust on sole plates prior to installing and welding. After installing the pads and welding the sole plates to the s hoe plates, the Contractor shall touch up the primer and apply topcoat to exposed surfaces .

545.3.1 2.7 Spray Equipment

The Contractor shall apply the coatings with spray nozzles at the manufacturer recommended pressures.

545.3.1 2.8 Film Thickness Requirements

The Contractor shall apply coatings in accordance with Table 5 45.3.1.2.8:1, “Required Film Thicknesses.”

545.3.1 2.8:1

Required Film Thicknesses Coating Dry film thickness range (mils) Primer (IOZ) or Primer (OZ) 2 – 4 3 – 5 Topcoat (epoxy) or Topcoat (acrylic) 4 – 6 2 – 4

545.3.1 2.9 Field Repair of Liquid Coatings

Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 537 Field repair of liquid coatings shall be performed in accordan ce with Section 546, “Recoating Structures” and the m anufacturer’s recommendations. Field repair shall be accomplished with the same coating system used for the original application with the exception that organic zinc ric h primer may always be used. The Contractor shall field repair coated areas that are rusted or damaged. The Contractor shall prepare the surface in accordance with Section 546.3.1, “Surface Preparation of Existing Bridges and Structures” or with methods approved by the Project Manager. The Contractor shall prime large areas using spray Equipment, brush, or roller. The Contractor shall prime small areas with a brush. The Contracto r shall spray or brush the topcoat. Two (2) or more coats may be necessary to build up th e required film thickness. The Contractor shall apply topcoat only to areas where the topcoat is damaged. Requirements of Section 546.3, “Construction Re quirements” apply to field repai rs.

545.3.2 Powder Coating System No. 3

545.3.2 1 Surface Preparation

The Contractor shall remove contaminants in accordance with SS PC-SP 1, or other methods approved by the Project Manager. The Contractor shall blast clean in accordance with SSPC-SP10 Near-White Metal Blast Cleaning. Additionally, for powder-coated surfaces, an iron or zinc phosphate wash shall be included to provide lon g-term corrosion protection.

545.3.2 2 Primer Application

The Contractor shall use a primer that is a zinc rich epoxy po wder coating designed for use over ferrous metal substrat es. The Contractor shall apply the zinc rich epoxy powder coat primer to a minimum of two (2) mils dry film thickness, above t he peaks of any blast profile.

545.3.2 3 Topcoat Application

The Contractor shall use a topcoat that is a super durable pol yester powder coating designed to provide for maximum UV exposure protection. The Co ntractor shall apply the polyester topcoat to a minimum of three (3) mils dry film thick ness before the primer has cured or as recommended by the manufacturer. Table 545.3.2.3:1 Required Film Thicknesses Coating Dry film thickness range (mils) Zinc-rich epoxy primer Min. 2 mils Polyester topcoat Min. 3 mils The Contractor shall use a magnetic film thickness gage or an electronic film thickness detector to determine dry film thickness per SSPC – PA 2, “Proc edure for Determining Conformance to Dry Coating Thickness Requirements.”

545.3.2 4 Fixturing

The Contractor shall suspend the components by suitable metal hooks or fixtures to provide a sufficient electric al grounding path. The Contractor shall affix the components with a Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 538 minimum of direct contact ar ea with the fixture device.

545.3.2 5 Curing

The Contractor shall place the powder-coated components in a s uitable oven and cure per the manufacturer’s recommended cure cycle. The Contractor shall remove the components from the oven and allow cooling. The Contractor sha ll visually inspect the components to ensure a smooth continuous uniform finish, free f rom runs, sags, pinholes or other defects.

545.3.2 6 Touch-up Painting / Field Repair of Powder Coatings

Field repair of powder coatings shall be performed in accordan ce with Section 546, “Recoating Structures” and the manufacturer’s recommendations. The Contractor shall use Coating System No. 2 from Section 546.2, using the inorganic zi nc-rich primer only where bare metal is exposed. Surface preparation shall be done in accordance with the manuf acturer’s recommendations. In the absence of manufacturer recommendation s, the surface shall be prepared in accordance with SSPC-3 on the minimum surface area possible to accomplish the repair. The Contractor shall field repai r coated areas that are rusted or damaged.

545.3.3 Handling Steel

The Contractor shall handle or load newly coated Structural St eel only when the coating has fully cured. The Contractor shall store coated components on pallets or in other approved ways so that the steel does not rest on soil. The Contractor shall protect st eel coatings from binding chain s with approved softeners. The Contractor shall hoist with padded hooks and slings. The C ontractor shall space parts during shipment to ensure that no rubbing occurs.

545.3.4 Provisions for Inspection

The Contractor will be responsible for performing and document ing Quality Control (QC) inspections of all s hop / field surface preparation and coating activities. When the Contract requires painting more than 1,500 sq. ft. of steel surface, the Contractor shall reference Section 544.2.7, “Contractor Qualifications.” When the Contrac t required painting less than 1,500 sq. ft. of steel surface, the Contractor shall document a ll QC inspection activities, measurements and observations on the Daily Inspection report. These reports shall be submitted to the Project Manager a t a minimum on a weekly basis and shall account for all Work performed. After completing erection, the Project Manager will inspect th e surfaces to be embedded in concrete. The Contractor shall repair damaged or rusted sur faces before placing decks. After placing the deck and at an agreed upon time, the Project Manager will inspect the entire steel Structure for coating system damage. The Project Manager will mark damaged areas for repair and will re-inspect after repairs are complete. Section 545: Protective Coating Of Miscellaneous Structural Ste el Page 539

545.3.5 Protection of the Work and Public

During the coating operations, the Contractor shall protect th e work and the public from blast cleaning operations, paint s platter, splashes and smirche s with protective covering or other methods approved by the Project Manager. When the protective devices or procedures are ineffective, the Project Manager may suspend the Work until corrections take place.

545.4 METHOD OF MEASUREMENT—Reserved

545.5 BASIS OF PAYMENT The Department will pay for the coating system(s) as Incidenta l to the new Steel.

Section 546: Recoating Structures Page 540