8−148 receive coatings. Remove and dispose of debris from cleaning operations, empty paint containers, and other refuse at no additional cost to the State. Damage caused by the Contractor’s operation shall be corrected at no additional cost to the Department.
825.01.4 Pollution Controls. Prevent environmental pollution of air, soil and water caused by
surface preparation media, paint spills or overspray, paint chips, dust or other harmful materials. Comply with the regulations of Rhode Island Department of Environmental Management (RIDEM) and provide notification as required. No extension of contract time or claims for costs will be allowed in order to comply with requirements of regulatory agencies.
825.01.5 Contractor Applicator Qualification. When the contract requires painting more than
1,500 square feet of steel surface, the contractor(s) performing coating application must demonstrate qualification by obtaining either The Society for Protective Coatings (SSPC) QP 1 “Standard Procedure for Evaluating Painting Contractors (Field Application to Complex Industrial Structures)” for field painting and SSPC QP-3 "Certification Standard for Shop Application of Complex Protective Coating Systems" as appropriate, or the American Institute of Steel Construction (AISC) Sophisticated Paint Endorsement (SPE). Contractors involved in the removal of paint containing lead or other toxic metals shall be certified SSPC QP2, “Standard Procedure Evaluating the Qualifications of Painting Contractors to Remove Hazardous Paint.” Qualification must be maintained throughout the painting portion of the project. If it expires or is revoked for any reason, the Engineer shall be notified and may require that a qualified contractor complete the coating portion of the project.
825.02 MATERIALS. Provide materials that conform to the applicable provisions of SECTION
M.06; PAINT, of these Specifications and to manufacturer’s recommendations as applicable. In the event of a conflict between the manufacturer’s recommendations and the requirements of this Section, comply with this Section unless the requirements of the manufacturer are more restrictive. In these cases, advise the Engineer of the discrepancies, in writing, and comply with the Engineer’s written resolution. The decision of the Engineer in such cases shall be final.
825.02.1 Paint Supplier. Provide all paint material products including primer, intermediate coat,
topcoat and thinners from the same paint supplier to ensure compatibility of components. Use the same paint manufacturer throughout all work. Provide paints that are lead and chromium free. The coating system shall be an approved NEPCOAT Qualifi ed Product from List A or B, or other system, in accordance with SECTION M.06; PAINT .
825.02.2 Topcoat Color. Provide a semi-gloss topcoat in the color specified on the plans, in the
Special Provisions, or elsewhere in the contract documents. Provide color chips and the Munsel and/or Federal Standard color designation for verification of the color of the topcoat. The color of the primer shall not affect the color of the topcoat.
825.02.3 VOC Compliance: All paint products must conform to all Federal, State and local
requirements at the point of application as determined using EPA Method 24.
825.03 CONSTRUCTION METHODS. 825.03.1 Surface Preparation.
a.General Requirements. Surface preparation shall be in accordance with the most recent edition of the Society of Protective Coatings Specifications and additional requirements 8−149contained in the Contract Documents.
b.Engineer’s Access. Provide safe access and time for the Engineer or his authorized representative(s) for inspection of all phases of work, including but not limited to surface preparation, the application of each coat of paint, including stripe coats, and for the inspection of the completed system. Provide access for sampling and testing paint material components. Samples may be subject to chemical and physical testing. Materials found to be of unsatisfactory quality will be rejected.
c.Surface Anomalies. Corner Condition – Remove all sharp corners of steel created by flame cutting or shearing using a grinder. For organic zinc-rich primers, stripe-coat all corners resulting from sawing, burning, or shearing operations. Preparation of Thermal Cut Edges – Thermal cut edges shall be softened before blast cleaning, as necessary to achieve proper blast profile. Base Metal Surface Irregularities – Remove all visually evident surface defects in accordance with ASTM A6 or AASHTO M 160 prior to blast cleaning steel. When material defects exposed by blast cleaning are removed, the blast profile must be restored by either blast cleaning or by using mechanical tools in accordance with SSPC-SP 11 “Power Tool Cleaning to Bare Metal.” Weld Irregularities or Spatter – Remove or repair all sharp weld prominences, weld deficiencies (overlap, rollover, excessive concavity, convexity, or roughness) and all heavy, sharp, or loose weld spatter. Occasional individual particles of rounded tight weld spatter may remain, but widespread, sharp, or clustered particles of tight weld spatter must be removed. The removal of weld irregularities and spatter shall be removed to a flush surface.
d.Pre-Cleaning. Remove all oil, grease, and other adherent deleterious substances from areas to be painted, in accordance with SSPC-SP 1 “Solvent Cleaning”, prior to abrasive blast cleaning.
e.Abrasive Blast Cleaning. Abrasive blast-clean the entire surface in accordance with the cleanliness and profile required by the manufacture’s Product Data Sheet. The profile shall be assessed per ASTM D 4417. All new structural steel shall be cleaned in accordance with SSPC SP-10, “Near White Blast Cleaning”. The abrasive blast media shall meet SSPC-AB1 “Mineral & Slag Abrasives”, SSPC-AB 2 “Cleanliness of Recycled Ferrous Metallic Abrasives”, or SSPC-AB3 “Ferrous Metallic Abrasives.” If the material for the project is heavily rusted or pitted, or as directed by the Engineer, measure the non-visible contam inant and remove in accordance with SSPC-Guide 15 “Field Methods for Retrieval and Analysis of Soluble Salts on Steel and Other Nonporous Substrates” to ensure detectable chloride levels are less than 10 micrograms per square centimeter. Compressed air supply lines shall be equipped with oil traps and moisture separators. Conduct a white blotter test in accordance with ASTM D 4285 to verify the cleanliness of the compressed air. Conduct the test at least once per shift for each compressor system. Sufficient freedom from oil and moisture is confirmed if no soiling or discoloration is visible on the paper.
f.Lighting: Provide adequate lighting for all surface preparation, paint application, and inspection work. Maintain a minimum of 10 foot-candles for surface preparation and painting, and a 8−150 minimum of 30 foot-candles of general area lighting for inspection. Increase the lighting if workers or other personnel have difficulty seeing. Use explosion-proof lighting.
825.03.2 Paint Application.
a.General Requirements. Apply coatings in accordance with the contract requirements, SSPC-PA 1, “Shop, Field, and Maintenance Painting of Steel” and the manufacturer’s recommendations. Apply the coating to provide a continuous, uniform film of the specified thickness that is well bonded to the substrate or previously applied coating; is free of laps, streaks, sags, separation, unevenness, discoloration, and other visually evident defects; and applied within the manufacturer’s specified pot life. Areas that fail any required test shall be repaired as outlined in “Removal/Repair of Unsatisfactory Material.”
b.Coating Material Storage. Paint shall be stored in accordance with SSPC-QP3, SSPC- PA 1, and the manufacturer’s recommendations. Record the daily storage temperature range for coating materials and verify conformance with the coating manufacturer’s recommendations. Inventory the components to ensure they are used within the shelf life prescribed by the manufacturer. Record the coating batch num bers from each mixed component, the amount and type of thinner used, and the date of application. Paint in storage shall not be exposed to temperatures lower than those recommended by the paint manufacturer. Paint exposed to temperatures lower than specified is subject to rejection or retesting. When paint is rejected, painting operations shall cease until the rejected paint is removed from the project site.
c.Conditions for Application. Apply the paint material to clean dry surfaces. Comply with the atmospheric conditions specified below, or the written recommendations of the manufacturer, whichever is most stringent. Do not apply materials when: • The temperature of the air or substrate is below 40° F or greater than 100 °F, or is forecasted to drop below 40°F before the coating dries in accordance with the dry times specified in the manufacturer’s recommendations. • The surface temperature is less than 5 °F above the dew point. • The relative humidity is above 85%. • There is or will be rain, mist, fog or snow during application and/or cure. • The manufacturer’s requirements for reaction time after mixing are not satisfied.
d.Methods of Application. Use brushes, rollers, spray equipment, or any combination of equipment recommended by the manufacturer and authoriz ed by the Engineer that provides a finish that is acceptable to the Department.
e.Stripe Coats. Apply a stripe coat to corners, weld seams, around nuts and bolts or as otherwise directed in the contract documents. Do not apply the full coat of primer any sooner than 15 minutes after the application of the stripe coat, or any later than the manufacturer’s recommended recoat times. Inspection personnel shall be notified and be given ample time to verify and approve the stripe coat application. Do not apply the full coat of primer until the Engineer has approved the striping. The coating material used for the stripe coat is typically the intermediate coat, but for painting metalizing or galvanize, the urethane finish coat is striped. 8−151f. Intermediate and Topcoat. The color of the topcoat shall be as specified in the contract documents. The intermediate coat color shall contrast with both the primer and topcoat. Stripe coats may be tinted as necessary to assure proper coverage. Coating materials used to apply piece marks shall be compatible with the existent and any subsequent coats.
g.Recoat Interval. Comply with the coating manufacturer’s minimum and maximum recoat interval for each coating layer. Ensure that each coating layer is sufficiently cured before applying the next scheduled coating layer.
h.Field Applied Coatings-Touchup of Primer and Intermediate Coat(s). Prior to applying field touch-up coatings, verify that all su rfaces, including install ed bolts, nuts and zinc-rich primer around connection plates are thoroughly cleaned of grease, oil, chalk, bird droppings, lubricants and other surface interference material. Use pressure washing or solvent cleaning, as appropriate, to remove the interference material. Use hand and power tool cleaning for spot repair of localized damage to the coating system. Pressure wash, using 1500 psi water pressure, all surfaces primed with zinc-rich primer to remove zinc salts. Do not proceed with touchup and painting until the Engineer has accepted the surface cleaning. Repair any damaged areas of coating and reapply all affected coating layers. Perform field touchup in areas around bolts, nuts, connection plates, and other areas that had not previously been painted.
i.Field Applied Coatings-Topcoat Application. Apply topcoat in the field after the Engineer has accepted the touch up (primer and intermediate) and after the structure has been erected on the project site. Verify that the amount of time between the application of the intermediate and the topcoat is within the coating manufacturer’s maximum recoat time, as stated in manufacturer’s recommendations. Veri fy that the surface is clean and dry prior to the application of the topcoat. If grease, oil, or other contaminants become deposited on the intermediate coat, remove it in accordance with SSPC-SP1 prior to the application of the topcoat.
j.Removal/Repair of Unsatisfactory Material. The coating system is unsatisfactory if any of the following defects occur: abrasion damage, peeling, blistering, wrinkling, excessive runs or sags. It is also unsatisfactory if there is evidence of application under unfavorable conditions; the workmanship is poor; unauthorized coating material was used; or for other reasons determined by the Engineer. Repair procedures for unsatisfactory material shall be submitted to the Department for approval prior to performing related work. Remove and replace unsatisfactory coating layers at no additional cost to the Department as specified below. • Bare steel exposed less than 4”x4” area . When the defective paint or damage extends to the bare steel or bare steel is exposed in areas less than 4” x 4” in size, clean the surface by power tool cleaning to SSPC-SP11. Feather the surrounding paint to expose a minimum of ½” of each coat and to provide a smooth transition into the surrounding intact, adherent material. Select a primer recommended by the manufacturer of the intermediate and topcoat. For new steel, apply a spot coat of zinc-rich primer to the prepared surface. Follow with a spot coat of the intermediate and topcoat. • Bare steel exposed greater than 4”x4” area. When the defective paint or damage extends to the bare steel in areas greater than 4” x 4” in size, blast clean the area in accordance with SSPC SP10, feather the surrounding paint and repair as described above. • Primer or intermediate coat exposed. When the damaged or defective paint extends to the primer or intermediate coat, and for primed areas around and on connection plates, clean the surface by hand or power tool cleaning. Clean in accordance with SSPC SP2 or SSPC SP3 to remove oxidation, zinc-salts, or contamination from the surface. Do not burnish or polish the 8−152 surface. Supplement hand and power tool cleaning with pressure washing (1500 psi minimum) accompanied by scrubbing with stiff bristled brus hes or other means as necessary. Feather the surrounding material to expose a minimum of ½” of each coat and to provide a smooth transition into the surrounding intact, adherent coating material. • All repairs . For all repairs, roughen the paint in overcoat areas with 80 grit sandpaper to assure good adhesion of the overcoat material to the underlying paint. Also, solvent clean in accordance with SSPC SP1 and re-paint the affected areas with the intermediate and topcoat.
k.Scaffolding. Use rubber rollers or other protective devices to prevent damage to the finished coatings. In particular, sufficient support pads shall be utilized for bracing on fascias. Temporary supports or attachments for scaffolding or forms shall not damage the coating system. Areas damaged by scaffolding shall be repaired in accordance with “Removal/Repair of Unsatisfactory Material" in Subsection 825.03.2(j) above.
l.Technical Supervision. Coating manufacturer's representation is required for shop and field applications. The coating representative shall be present to provide the Contractor with an evaluation of the surface preparation and to provide such aid and instruction in the application of the coating system as required to obtain a satisf actory result that meets the approval of the Engineer and the manufacturer’s representative. At a minimum, the services of this representative are required at the startup of all shop and/or field operations. In addition, services may be required on an "as needed" basis until painting is satisfactorily completed. The Contractor/fabricator is responsible for securing the services of the technical representative, the services of which shall be at no additional cost to the State.
825.03.3 New Steel Structures. In addition to the above, work under this paragraph shall include
only those structures being built new or structures whose superstructure is being replaced in its entirety. New steel utilized in partial replacement or rehabilitation shall be addressed in Subsection
825.03 4; Existing Steel Structures , and in the Contract Documents.
a.General. The coating system shall be an approved Northeast Protective Coating Committee (NEPCOAT) three-coat system and shall conform to the requirements of SECTION
M.06; PAINT, of these Specifications and the following: Exterior Steel Surfaces . The system shall consist of a prime coat, intermediate stripe coat, intermediate coat, and topcoat. Interior Steel Surfaces . The coating system for the interior surfaces such as: open box girders, arch ribs and ties and tubular wind bracing shall consist of a two-coat NEPCOAT exterior system. This system contains a zinc-rich primer and intermediate coat. Select the same primer and intermediate coat for application to both interior and exterior surfaces of the same steel member. Interior surfaces require no topcoat. The intermediate coat applied to interior surfaces shall be white.
b.Priming Faying Surfaces. Coatings applied to contact surfaces of bolted connections between primary members shall satisfy the requirements of the Research Council on Structural Connections (RCSC). The coating system for faying surfaces shall have a slip coefficient of Class B unless otherwise noted in the contract documents. Prior to shop bolting, verify that the coating on faying surfaces is applied at the recommended dry film thickness and the temperature adjusted cure time for shop and field slip critical bolted faying surfaces are within the range previously 8−153validated through testing by the applicator’s QC person or as given by NEPCOAT. Verify cure in accordance with ASTM D 4752 or the manufacturer's requirements. Apply the zinc-rich primer to all surfaces. Do not apply intermediate and topcoats to faying surfaces, connection areas, and within 2” of a connection area that is to be welded. Mask or otherwise protect these surfaces to prevent the application of intermediate and topcoats. Unless noted otherwise in the contract documents, zinc-rich primer is not allowed on flange surfaces that will be embedded in concrete, although overspray is allowed on these flange surfaces. Apply the topcoat to the same surfaces coated with the intermediate coat, except those surfaces that will be embedded in concrete.
c.Bolts (Fasteners). Bolts installed and final tightened before priming shall be prepared as necessary so as that after the steel is abrasive blast cleaned, exposed bolt surfaces shall satisfy the requirements in Table 1. Black bolts, nuts, and washers, including flat faces of nuts and bolt heads facing adjacent material, may require spot blast cleaning or other surface preparation before general blast cleaning in order to assure that the proper surface profile to obtain adhesion of the primer, has been achieved. TABLE 1 SURFACE PREPARATION REQUIREMENTS FOR FASTENERS & BOLTS Item Fasteners Installed Prior to Cleaning & Primer Application Fasteners Installed After Primer Application Coating System Surface Preparation Coating System Surface Preparation Black Iron Bolts OZ or IOZ, I, T SSPC-SP10 IOZ, OZ, I, T SSPC-SP 1 & 10 Galvanized (Mechanical or Hot Dip) OZ or IOZ, I, T SSPC-SP 1 I, T SSPC-SP 1 & 2/3 OZ= Organic Zinc-Rich Primer IOZ= Inorganic Zinc-Rich Primer I= Intermediate Coat T= Topcoat If the zinc coating on shop-installed galvanized bolts is damaged during shop abrasive blast cleaning or tightening, it may be left “as is” only if the entire coating system (including the zinc-rich primer) will be applied over the fasteners. Remove the lubricant from bolts. The Contractor shall obtain from the Fabricator the identity of solvents and methods needed to remove the lubricant. The Contractor and/or its Fabricator shall also consult with the coating supplier to assess the compatibility of the coating with any lubricant residue. The Contractor and/or its Fabricator shall s upply to the shop and field painters, the Engineer 8−154 and other interested parties the information concerning the lubricant removal and the cleanliness necessary for satisfactory adhesion of the subsequent coat as described in Table 1. Any dye coloring remaining on galvanized nuts after weathering or after removing the lubricant is not believed to be detrimental to coating performance or appearance. Use a white cloth wipe test with no color transfer to confirm that all lubricant and non-absorbed dye has been removed; only residual “stain” is permitted to remain on the surface.
d.Shipping, Storage, and Erection of Steel. Use extreme care in handling, storing, shipping and erecting the steel to avoid damage to the coating system. Do not move coated steel in the shop until sufficient cure time has elapsed to ensure that no damage will be done to the fresh coating. The steel shall not be shipped from the shop to the field until the last coating has fully cured. Install padding on hooks and slings used to hoist the steel and use softeners approved by the Engineer to insulate the steel from binding chains. Place small structural pieces in such a manner that no rubbing will occur during shipment. Store the steel at the job site on pallets or by other means to prevent members from resting directly on the ground or from falling onto each other.
825.03.4 Existing Steel Structures. Work under this section includes only those structures that are
not included under Subsection 825.03.3. Specific requirements may also be found in the Contract Documents.
a.Protection of Painted Surfaces. Protect freshly coated surfaces and those surfaces not scheduled for painting from over blast and stray abrasive during blast cleaning operations. Previously coated surfaces damaged by subsequent blast cleaning operations shall be cleaned in accordance with SSPC SP10 and recoated in accordance with this specification.
b.Surface Preparation. Obtain the Engineer's approval of the preparation of all surfaces to be painted before applying any paint. Surface preparation and coating requirements are dependent upon the scope of work and the type and condition of the existing coating sy stem. Table 2 provides the required surface preparation methods for four scenarios. Detailed descriptions of the surface preparation methods follow the table. Specific coating material requirements for each surface preparation method are provided in SECTION M.06, PAINT, of these Specifications. TABLE 2 SURFACE PREPARATION METHODS FOR SPOT, ZONE, AND OVERCOATING Scope of Work Surface Preparation Existing Coating System Spot Prime and Overcoat Method 1 Alkyd Coatings Spot Prime and Overcoat Method 2 Zinc-rich or Metalizing/Galvanizing with Topcoat Zone Painting Method 3 Alkyd Coatings Zone Painting Method 3 or Method 4 Zinc-rich or Metalizing/Galvanizing with Topcoat 8−1551. The surface preparation methods shall be in accordance with the paint manufacturer’s recommendations unless the requirements in this table exceed the manufac turer’s recommendations. In case of conflict, the most stringent surface pr eparation methods shall govern as determined by the Engineer. Method 1 : Spot Prime and Overcoat an Existing Alkyd Coating System. Localized areas of corrosion or coating breakdown shall be spot cleaned using vacuum shrouded power tools in accordance with SSPC-SP3, “Power Tool Cleaning”. Feather the edges of the power tool cleaned areas. The intact alkyd coating shall be prepared for overcoating by cleaning in accordance with Low-Pressure Water Cleaning (LP WC) of SSPC-SP12. The minimum acceptable water pressure is 1500 psi. Use low pressure water cleaning to remove chalk, pigeon droppings, dirt and other deleterious materials from the surface. Method 2: Spot Prime and Overcoat an Existing Coati ng System that consists of a zinc-rich primer or metalizing and a topcoat. Localized areas of corrosion or coating breakdown shall be spot cleaned using vacuum shrouded power tools in accordance with SSPC-SP11, “Power Tool Cleaning to Bare Metal” or using vacuum blas t cleaning equipment in acco rdance with SSPC-SP10, “Near White Blast Cleaning”. Feather the edges of the repaired area. The in tact topcoats (epoxies or urethanes) shall be prepared for overcoating by hand sanding to roughen the surface. Method 3 : Abrasive Blast Clean to remove all coating material from a well-defined zone (portion of the structure). Blast clean steel in accordance with SSPC SP10, “Near White Blast Cleaning”. The surface area of the steel to be blast cleaned shall be no greater than the surface area of steel that can be primed during the same day. The maximum time lapse between surface preparation and application of the prime coat sha ll not be greater than 8 hour s, unless atmospheric controls are used to prevent “rust back”. Should any "rust back" occur prior to priming, re-clean surfaces to provide the specified degree of cleanliness. The abrasive blast profile shall be in accordance with the manufacturer’s requirements as stated on the product data sheets. Method 4 : Water Wash and Ultrahigh Pressure Wa ter Clean in a well-defined zone (portion of the structure). Thoroughly pressure wash all surfaces in the zone that will be coated, including areas of limited access such as crevices between back to back angles. Low pressure washing to remove the loose debris, followed by ultrahigh pressure water cleaning to remove all existing coating and corrosion from the steel surfaces scheduled to be coated. Comply with the requirements of SSPC-SP 12, “Surface Preparation and Cleaning of Steel and Other Hard Materials by High- and Ultrahigh-Pressure Water Jetting Prior to Recoating”. Cleaned steel surfaces that are to be painted shall conform to the Visual Surface Preparation Definitions of the surface condition WJ-3 in SSPC SP12. The use of rust inhibitors is prohibited. Steel surfaces not primed within 72 hours shall be re-cleaned by water jetting. Collect all water and paint chips dislodged by the water cleaning process. Use potable filtered water for the washing to achieve a surface that is free of paint, corrosion and other visible contaminates. Measure the non-visible contaminant and remove in accordance with SSPC-Guide 15 to ensure detectable chloride levels are less than 10 micrograms per square centimeter.
c.Limited Access Areas. The design of the structure may create areas of limited access which cannot be cleaned to the spec ified degree of surface preparation across every square inch of the surface. In these cases, provide surface preparation as follows: Thoroughly clean all areas that can be viewed without the use of mirrors to the specified degree of cleanliness. Localized areas of limited access due to the configuration of the structure may prevent the specified degree of cleanliness from being achieved. In these instances, at a minimum, remove all loose coatings. Inspect the surfaces by touch, using a putty knife, and by 8−156 using inspection mirrors, optical or digital scopes. Cleaning and painting of these areas may require the use of specialized equipment. If the lim ited access area is a crevice or gap from which pack rust cannot be removed such as between mating plates, between back-to-back angles, or between structural members, apply sealants/caulks in order to seal the top and side surfaces to prevent moisture intrusion. Do not caulk the bottom crevice. Use sealants/caulks compatible with the coating system and provide written verificati on from the coatings manufacturer as to the compatibility of the sealant/caulk with the coating.
c.Limited Access Areas. The design of the structure may create areas of limited access which cannot be cleaned to the spec ified degree of surface preparation across every square inch of the surface. In these cases, provide surface preparation as follows: Thoroughly clean all areas that can be viewed without the use of mirrors to the specified degree of cleanliness. Localized areas of limited access due to the configuration of the structure may prevent the specified degree of cleanliness from being achieved. In these instances, at a minimum, remove all loose coatings. Inspect the surfaces by touch, using a putty knife, and by using inspection mirrors, optical or digital scopes. Cleaning and painting of these areas may require the use of specialized equipment. If the lim ited access area is a crevice or gap from which pack rust cannot be removed such as between mating plates, between back-to-back angles, or between structural members, apply sealants/caulks in order to seal the top and side surfaces to prevent moisture intrusion. Do not caulk the bottom crevice. Use sealants/caulks compatible with the coating system and provide written verificati on from the coatings manufacturer as to the compatibility of the sealant/caulk with the coating.
825.03.5 Painting Metalized or Galvanized Surfaces. The coating system shall be an approved
NEPCOAT system and shall conform to the requirements of SECTION M.06; PAINT, of these Specifications and the following. The zinc-rich primer is not required for metalized or galvanized surfaces. Galvanizing must be prepared in accordance with SSPC SP-16 prior to painting. White corrosion deposits such as wet storage stains must be removed before coating. Overcoat with any of the NEPCOAT approved intermediate coats fo llowed by the application the compatible NEPCOAT approved topcoat. The natural profile of metalized surface will not require any surface preparation. Any process that reduces the metalize or galvanize thickness below the specification limit requires removing and re-applying the metalize or galvanize, as applicable, to meet the specification. Apply the intermediate coat to the surface as soon as possible after the Engineer has accepted the metalizing or galvanizing surface preparation and no later than 8 hours after the metalizing application or galvanizing surface preparation, as applicable. If more than 8 hours elapses, provide written recommendations from the intermediate coat manufacturer that indicate what steps must be taken to compensate for any oxidation and make the surface suitable for the intermediate coat application. Do not implement the steps without written approval from the Engineer. Apply a stripe coat of urethane to a ll edges bolted connections, and other areas followed by a full finish coat of urethane.
825.03.6 Stenciling of Topcoat. After the topcoat has fully cured, provide stencil information on
the inside surface of the fascia member at each abutment location unless directed otherwise by the Engineer. Use suitable black paint, or other color as approved by the Engineer to contrast with 8−157topcoat for visibility, to stencil uniform block lettering on the surface, two to three inches in height, with the following information: • The bridge identification number as shown on the Plans, • The month and year of completion of the coating system (MM/YYYY), • The SSPC identification of the cleaning method, and • Identification of the coating system (for example: IOZ/OZ, E, U) with the name of manufacturer. The following designations shall be used: - IOZ=Inorganic Zinc Rich Primer - OZ-Organic Zinc Rich Primer - M=Metalized - G=Galvanized - E=Epoxy - U=Urethane
825.03.7 Quality Control. The Contractor is responsible for performing quality control. Document
and conduct an on-going quality control plan for the process and inspection of the materials, surface preparation, coating applications storage, and shipping of components as necessary to assure that all work is performed in strict compliance with these specifications, the Contract Documents, and the manufacturer’s recommendations. This plan, at a minimum, shall address the following: : • Qualifications and responsibilities of the QC Manager • Qualifications, responsibilities, and training for workers. This shall include the frequency of checks on the quality of work. • Documentation of the proposed equipment and calibration records. • How the QC documentation and supporting records are maintained. • How the surface preparation of the steel prior to the application of the paint system, especially the profile, is verified and monitored (i.e. frequency). For galvanized steel, this would include the method of profiling. • How the environmental conditions (i.e. ambient temperature, dew point, relative humidity, etc.) for various stages of the paint process are monitored and maintained throughout the duration of the project. • How the coating materials and abrasives are verified and monitored for receipt, storage, and control. • How the coating materials are verified and monitored for batch numbers, mixing, pot life, mix reaction time, dry time, curing, recoat time, and cleanliness of each coat prior to the application of the subsequent coat . • How the coating materials, including galvanize and metalize, are inspected and accepted for appearance, film thickness, adhesion, etc. For galvanized surfaces, this includes the galvanize thickness after the surface preparation. • How the coating films are inspected for defects. • How the faying surfaces are treated and protected. How the coatings of steel components are protected from damage during storage, shipping, and erection.
825.03.8 Equipment and Standards. If requested by the Engineer, furnish the following
Equipment and Standards. All equipment must be maintained by the Contractor and in working order at all times. Failure to do so will result in stoppage of the work until deficiencies are corrected at no additional cost to the State. These items will be returned to the Contractor when the Engineer 8−158 is finished with the inspection: • PTC Surface Temperature Thermometer. • Psychron 566 Psychrometer (Battery Operated) with two sets of new batteries. • Psychometric Charts for Dew Point and Relative Humidity. • SSPC VIS Standard appropriate for the specified degree of cleaning: SSPC VIS 1, "Visual Standard for Abrasive Blast Cleaned Steel" SSPC VIS 3, Visual Standard for Power- and Hand-Tool Cleaned Steel" SSPC VIS 4/NACE VIS 7, "Guide and Reference Photographs for Steel Surfaces Prepared by Waterjetting." • Wet film thickness gage. • Positector 6000 Coating Thickness Gauge, with probes suitable for the surface to be measured. • NIST (NBS) Calibration Standards. • SSPC Surface Preparation Standards appropriate for the surface preparation requirements of the Contract Documents. • Tooke guage.
825.03.9 Pre-Painting Meeting. The Contractor shall arrange for a meeting at the site where the
surface preparation and painting is to be performed. Arrange the meeting at least 1 month in advance of starting the work to discuss the project requirements with the Department and the manufacturer’s technical representative to allow for an examination of the surface preparation and paint application equipment. The meeting shall address methods of operation; weather-related concerns; health and safety; proper storage of material and equipment; location of recycling and dust collection and storage equipment; treatment of inaccessible areas; and vi sual standards to be satisfied. The quality control plan shall be provided to the Engineer for review at least two weeks prior to this meeting. Work shall not proceed until this meeting has been completed to the satisfaction of the Engineer.
825.04 METHOD OF MEASUREMENT. 825.04.1 Painting Structural Steel. "Painting Structural Steel,” i.e., new steel, will be measured
by the number of square feet of steel actually painted in accordance with the Plans and/or as directed by the Engineer. Cleaning, surface pr eparation and paint systems will be considered as incidental to the painting work and, therefore, will not be measured separately.
825.04.2 Painting Existing Structural Steel. "Painting Existing Structural Steel" will be measured
by the number of square feet of steel actually painted in accordance with the Plans and/or as directed by the Engineer.
a.Surface Preparation. "Surface Preparation" will be measured by the number of square feet of steel surface actually prepared in accordance with the Plans and/or as directed by the Engineer. Separate levels of surface preparation necessary to accomplish the final specified surface preparation shall not be measured separately for payment but shall be considered included in the single square foot measurement.
825.04.3 Lump Sum Alternative. In certain cases, any or all of the above items of work may be
paid on a lump sum basis. In such cases, no measurement will be required.
825.04.4 Personnel and Environmental Protection. "Personnel and Environmental Protection"
8−159will be measured in accordance with the appropriate paragraphs in SECTION 826 of these Specifications.
825.05 Basis of Payment.
825.05.1 Painting Structural Steel. The accepted quantity of "Painting Structural Steel" will be
paid for at either the contract unit price per square foot or the contract lump sum price, as the case may be, as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, materials, and equipment including cleaning, surface preparation, selection of paint system, painting and all incidentals required to finish the work, complete and accepted by the Engineer.
825.05.2 Painting Existing Structural Steel. The accepted quantity of "Painting Existing
Structural Steel" will be paid for at either the contract unit price per square foot or the contract lump sum price, as the case may be, as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, materials, equipment, selection of paint system, and all incidentals required to finish the work, complete and accepted by the Engineer.
a.Surface Preparation. The accepted quantity of "Surface Preparation" will be paid for at either the contract unit price per square foot or the contract lump sum price, as the case may be, for the final level of surface preparation as listed in the Proposal. Separate levels of surface preparation necessary to accomplish the final specified surface preparation will not be paid for separately but will be considered included in the single square foot or lump sum for payment. The price so-stated constitutes full and complete compensation for all labor, materials, equipment, and all incidentals required to finish the work, complete and accepted by the Engineer. SECTION 826 PERSONNEL AND ENVIRONMENTAL PROTECTION
826.01 DESCRIPTION . This work consists of providing protection for both persons and the
environment during the blast cleaning of existing structural steel prior to the repainting of said steel, all in accordance with these Specifications. Specifically, this provision covers the requirements for removal and containment of paint and/or corrosion products from any steel bridge or specified appurtenances during blast cleaning operations. Also covered by this Specification are the requirements to assure that both Contractor and Department employees are adequately equipped and protected from the harmful effects of lead, blast media dust and fumes from the blasting operations. This provision is associated with, and applies to, SECTION 825; PAINTING STRUCTURAL STEEL , of these Specifications.
826.01.1 Toxic Caveat. The Contractor is hereby notified that existing paint systems on the State's
bridges may contain toxic substances such as lead or chromium, and that these substances may be considered hazardous wastes when removed.
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 482–493 of 826.