Attachment B.pdf

710.1 710.2.1.1

SECTION 710

PAINT FOR STRUCTURAL STEEL

710.1

710.1 Description

710.1 This section contains specifications for the materials, construction, meas-urement, and payment for furnishing paint and paint materials and applying these paints as indicated on the Plans and in accordance with the provisions and requirements of the Special Provisions, applicable Supplemental Specifi-cations, these specifications, and as directed by the RCE.

710.2

710.2 Materials

710.2.1

710.2.1 General

710.2.1 Furnish paint that is thoroughly ground, and neither settles excessively, nor cakes in the container. Ensure that the paint mixes readily with a paddle to a smooth, uniform consistency. Small amounts of anti-skinning agents and anti-settling agents may be added during manufacture. If kept in storage, en-sure that the paint retains the original paint characteristics for a period not less than the stated shelf life. Maintain containers of paint unopened until required for use. Use containers first that have been recently opened and premixed or blended together. Do not use paint that has livered, gelled, or otherwise deteriorated during storage or is beyond the stated shelf life. En-sure that wet paint is protected against damage from dust, sand, blast debris, or other detrimental foreign matter. Comply with the manufacturer’s recom-mendations for health and safety (Safety Data Sheets) when handling, stor-ing, and applying paint.

710.2.1 During the painting operation, use precautionary measures to protect any surfaces that are not to be painted or that have already been painted. Repair and spot-paint any areas of paint film damaged by the Contractor's operations at no additional cost to the Department. Remove to the satisfaction of the RCE all spillage, drippings, spattering, or inadvertent applications caused by the Contractor's operations.

710.2.1 Ensure that paint is applied by individuals with a minimum of 2 years of ex-perience in the application of the paint system being applied. Use paint sub-contractors that have a minimum of 2 years experience in the application of the specified paint system on structural steel bridges.

710.2.1.1

710.2.1.1 Inspection, Sampling, and Acceptance

710.2.1.1 The Department reserves the right to sample all ingredients at the point of origin and to sample finished paint either at the point of origin or at the desti-nation and to withhold acceptance of the paint until analysis of such samples are made.

710.2.1.1 Inspection and/or sampling will be done at the point of manufacture when-ever practicable. When inspection and/or sampling are performed at the point of manufacture, ensure that all necessary assistance is furnished by the

710.2.1.1 710.2.6 manufacturer so that the inspector can inspect and/or sample all the ingredi-ents and the finished paint. Submit samples to the OMR for testing. The manufacturer may proceed with making the paint prior to receiving test results on the ingredient samples; however, should any of the ingredient materials fail to meet the specified test requirements, paint made with the failing material will be rejected. For finished paint that is sampled at the point of destination, furnish a manufacturer certification to the RCE and OMR that the ingredient materials meet all applicable SCDOT specifications.

710.2.1.1 Furnish paint in compliance with the current EPA, SCDHEC, and local City or County requirements for Volatile Organic Compounds (VOC). Use material from the Department’s most recent edition of SCDOT Qualified Product List 19.

710.2.1.2

710.2.1.2 Packing and Marking

710.2.1.2 Ensure that each shipment of paint is accompanied by written certification from the manufacturer stating that the material furnished complies with the Department’s paint specifications. Have paint shipped in new, strong con-tainers that are properly sealed. Have each container plainly marked with the type and color of paint, number of gallons, lot or batch number, the date of manufacture, and the name and address of the manufacturer.

710.2.2

710.2.2 Inorganic Zinc Silicate Primer Paint

710.2.2 Provide an Inorganic Zinc Silicate primer paint that is a two-component, self-curing paint that cures without the use of a separate curing solution. Use the Inorganic Zinc Silicate paints appearing on the most recent edition of the SCDOT Qualified Product List 19. Ensure that the prime coat is produced by the same manufacturer as the intermediate and the finish coats.

710.2.3

710.2.3 Aluminum Epoxy Mastic Paint

710.2.3 Furnish Aluminum Epoxy Mastic paint that is a two-component, modified epoxy bitumen primer, intermediate coat, or finish coat paint. Provide leafed aluminum color. Use Aluminum Epoxy Mastic paints appearing on the most recent edition of the SCDOT Qualified Product List 19.

710.2.4

710.2.4 High Build Aliphatic Polyurethane Paint

710.2.4 Provide a High Build Aliphatic Polyurethane paint that is a two-component finish coat paint. Use High Build Aliphatic Polyurethane paints appearing on the most recent edition of the SCDOT Qualified Product List 19.

710.2.5

710.2.5 Acrylic Paint

710.2.5 Furnish Acrylic paint that is a single component, water reducible, and 100% acrylic intermediate or finish coat paint. Use the Acrylic paints appearing on the most recent edition of the SCDOT Qualified Product List 19.

710.2.6

710.2.6 Paint Zones

710.2.6 Paint Zone A consists of Beaufort, Berkeley, Charleston, Colleton, Dor-chester, Georgetown, Horry, and Jasper Counties.

710.2.6 710.2.7.2

710.2.6 Paint Zone B consists of all counties not included Paint Zone A above.

710.2.7

710.2.7 Paint Systems

710.2.7.1

710.2.7.1 Paint System NS1

710.2.7.1 When Paint System NS1 is called for in Paint Zone A on new structural steel, including all grades of weathering steel, apply the following paints in accordance with these specifications, the Plans, and the Special Provisions:

• One primer coat of Inorganic Zinc Silicate paint (3.5 mils minimum dry film thickness),

• One intermediate coat of Aluminum Epoxy Mastic paint (5 mils mini-mum dry film thickness), and

• One finish coat of High Build Aliphatic Polyurethane paint (3.5 mils minimum dry film thickness).

Furnish a light gray color (Federal Shade No. 26622) finish coat unless speci-fied otherwise in the Special Provisions or in writing by the BCE.

710.2.7.1 Ensure that the primer coat, the intermediate coat, and finish coat of paint are produced by the same manufacturer.

710.2.7.2

710.2.7.2 Paint System NS2

710.2.7.2 When Paint System NS2 is called for in Paint Zone B on new structural steel, including all grades of weathering steel, apply the following paints in accordance with these specifications, the Plans, and the Special Provisions:

• One primer coat of Inorganic Zinc Silicate paint (3.5 mils minimum dry film thickness),

• One intermediate coat of water reducible 100% Acrylic paint (2 mils minimum dry film thickness), and

• One finish coat of water reducible 100% Acrylic Paint (2 mils mini-mum dry film thickness).

Furnish a light gray color (Federal Shade No. 26622) finish coat unless speci-fied otherwise in the Special Provisions or in writing by the BCE. Ensure that the intermediate coat of Acrylic paint is of a different color than the finish coat of Acrylic paint.

710.2.7.2 If the Plans do not specify only partial painting of any grade of weathering steel, field paint the galvanized bolts, nuts, washers, and DTIs with Paint Sys-tem NS2 as specified above.

710.2.7.2 When the Plans specify partial painting of any grade of weathering struc-tural steel, paint with paint system NS2 as specified above, except furnish the a brown color (Federal Shade No. 30045) finish coat to match the long-term color of the weathering steel, unless specified otherwise in the Special Provi-sions or in writing by the BCE.

710.2.7.2 When the Plans specify partial painting of weathering steel in Paint Zone B, and non-galvanized weathering steel bolts, nuts, washers, and DTIs are used,

710.2.7.2 710.2.7.4 do not field paint hardware unless noted otherwise in the Plans.

710.2.7.2 When the Plans specify field painting of non-galvanized weathering steel bolts, nuts, washers, and DTI's, coat hardware with the following paints in ac-cordance with these specifications, the Plans, and the Special Provisions:

• One primer coat of Aluminum Epoxy Mastic paint (5 mils minimum dry film thickness),

• One intermediate coat of Aluminum Epoxy Mastic paint (5 mils mini-mum dry film thickness), and

• One finish coat of water reducible 100% Acrylic paint (2 mils mini-mum dry film thickness).

Furnish a brown color (Federal Shade No. 30045) finish coat to match the long-term color of the weathering steel.

710.2.7.2 Ensure that the primer coat, the intermediate coat, and finish coat of paint are produced by the same manufacturer.

710.2.7.3

710.2.7.3 Paint System NS3

710.2.7.3 When Paint System NS3 is called for on exposed new steel H-bearing pil-ing, sway bracing, and casing left in place, apply the following paints in accor-dance with these specifications, the Plans, and the Special Provisions:

• One primer coat of Aluminum Epoxy Mastic primer (5 mils minimum dry film thickness) and

• One finish coat of Aluminum Epoxy Mastic paint (5 mils minimum dry film thickness).

Ensure that the primer coat and finish coat of paint are produced by the same manufacturer.

710.2.7.4

710.2.7.4 Paint System ES1

710.2.7.4 When Paint System ES1 is called for on exposed areas of the existing structural steel, bearing assemblies (including exposed portions of anchor bolts), steel railing and any other previously painted steel surfaces of the ex-isting structure, apply the following paints in accordance with these specifica-tions, the Plans, or the Special Provisions:

• One primer coat of Aluminum Epoxy Mastic paint (5 mils minimum dry film thickness),

• One intermediate coat of Aluminum Epoxy Mastic paint (5 mils mini-mum dry film thickness), and

• One finish coat of High Build Aliphatic Polyurethane paint (3.5 mils minimum dry film thickness).

710.2.7.4 Furnish a light gray color (Federal Shade No. 26622) finish coat unless specified otherwise by the Department in the Special Provisions or in writing by the BCE. Tint the intermediate coat of Aluminum Epoxy Mastic paint to be clearly distinguishable from the primer coat of Aluminum Epoxy Mastic paint.

710.2.7.4 710.4.1.1.2

710.2.7.4 Ensure that the primer coat, the intermediate coat, and finish coat of paint are produced by the same manufacturer.

710.2.7.5

710.2.7.5 Determination of Paint System

710.2.7.5 Unless specified otherwise on the Plans or in the Special Provisions, use the table below to determine the Paint System for use on projects for the type of material located in the specified Paint Zones.

710.2.7.5

Material Paint Zone Paint System

New Structural Steel

(For Any Grade of New Weathering Structural Steel, see Note 1 below)

A

B

A and B

NS1

NS2

NS1

Existing Structural Steel A or B ES1

Exposed Portions of New Steel H Bearing, Piling & Sway Braces, Casing left in place

A or B NS3

Note 1: For NS2 paint system, painting is required for all grades of any weathering structural steel surfaces unless the Plans specify partial painting. 710.3

710.3 Equipment

710.3 Ensure that the equipment necessary for the proper construction of the work is on site, in acceptable working condition, and approved by the RCE as to both type and condition before the start of work under this section. Provide sufficient equipment to enable prosecution of the work in accordance with the project schedule and completion of the work in the specified time.

710.4

710.4 Construction

710.4.1

710.4.1 Primer Application

710.4.1.1

710.4.1.1 Inorganic Zinc Silicate Primer

710.4.1.1.1

710.4.1.1.1 Surface Preparation

710.4.1.1.1 Clean structural steel (including all grades of weathering steel in Paint Zone A and in Paint Zone B unless noted otherwise in the Plans) to the require-ments of SSPC SP-10, Near White Blast Cleaning. Ensure the quality of the blast cleaning is such that the prime coat of Inorganic Zinc Silicate paint specified adheres tightly to the steel in all cases. Ensure that the blast clean-ing operation produces a surface (anchor) profile between 1.5 mils and 3 mils.

710.4.1.1.1 Clean surfaces to be in contact with concrete, areas adjacent to bolted con-nections and splices, including bolt holes, as stated above.

710.4.1.1.2

710.4.1.1.2 Application of Paint

710.4.1.1.2 Shop apply Inorganic Zinc Silicate primer unless otherwise specified on the Plans and/or in the Special Provisions. Mix inorganic zinc silicate primer and apply within 12 hours after cleaning and before rusting occurs. Apply paint in accordance with the manufacturer’s written recommendations and by people

710.4.1.1.2 710.4.1.1.5 skilled in this type of work.

710.4.1.1.2 Apply the Inorganic Zinc Silicate primer only when the paint, the surround-ing air, and the steel surface temperatures are above 25ºF or the minimum temperature recommended by the paint manufacturer, whichever is higher.

Do not apply paint on damp surfaces. Do not apply paint when in the opinion of the OMR representative conditions are otherwise unsatisfactory for the work. Do not apply paint when the steel surface temperature is less than 5ºF above the dew point.

710.4.1.1.3

710.4.1.1.3 Thickness Requirements

710.4.1.1.3 Obtain a smooth uniform coating with a minimum dry film thickness of 3.5 mils without film cracking, sagging, or loss of adhesion.

710.4.1.1.3 Before the steel is moved out of the shop paint bay to shop storage, and within 6 hours of original painting, correct areas of each component found to have dry film thickness less than 3.5 mils. Correct by adding touch-up coats of the inorganic zinc primer, which has been thinned according to the manu-facturer’s recommendations for touch-up. Correct areas with flaws such as mud cracking or sags before moving steel to shop storage. Re-clean as de-scribed in Subsection 710.4.1.1.1 and repaint components with severe defi-ciencies (i.e., areas with readings less than 2.5 mils dry film thickness, exces-sive mud-cracking or sagging) that in the opinion of the OMR representative cannot be easily corrected by the touch-up method.

710.4.1.1.3 Allow the Inorganic Zinc Silicate primer to cure a minimum of 60 calendar days (no maximum) before the aluminum epoxy mastic touch-up (see Subsection 710.4.1.1.5) or the intermediate coat (i.e. Aluminum Epoxy Mas-tic paint or Acrylic paint) or the finish coat is applied.

710.4.1.1.4

710.4.1.1.4 Method of Application

710.4.1.1.4 Apply the Inorganic Zinc Silicate primer by spray application. Ensure that the equipment used is suitable for the intended purpose. Control the painting by appropriate pressure regulators and gauges. Use air caps, nozzles, and needles recommended by the manufacturer of the paint being sprayed. Ad-just the pressure on the paint in the pot and the air at the gun when necessary for changes in elevation of the gun above the pot.

710.4.1.1.4 Keep the equipment in satisfactory condition to permit proper application.

Keep spray equipment sufficiently clean so that dirt, dried paint, and other foreign materials are not deposited in the paint film. Completely remove any solvents left in the equipment before applying paint to the steel surface being painted. Use solvents approved by the paint manufacturer.

710.4.1.1.5

710.4.1.1.5 Shop Applied Touch-up of Damaged or Deficient Areas

710.4.1.1.5 When the steel is removed from shop storage for shipment to the project, correct damaged surface areas and areas deficient in dry film thickness (less than 3.5 mils) by applying 1 coat (5 mils minimum dry film thickness) of an approved Aluminum Epoxy Mastic paint produced by the same manufacturer

710.4.1.2 710.4.1.2.2 as the Inorganic Zinc Silicate primer.

710.4.1.2

710.4.1.2 Aluminum Epoxy Mastic Primer

710.4.1.2.1

710.4.1.2.1 Surface Preparation

710.4.1.2.1 Clean new or existing structural steel to the requirements of SSPC SP-6, Commercial Blast Cleaning unless otherwise directed by the BCE or specified on the Plans or in the Special Provisions. Ensure that the quality of the blast cleaning is such that the prime coat of Aluminum Epoxy Mastic paint adheres tightly to the steel in all cases. Ensure that the surface (anchor) profile is in the range specified by the paint manufacturer of the Aluminum Epoxy Mastic paint.

710.4.1.2.1 Ensure that the steel surface meets the requirements of SSPC SP-6 just before the application of the Aluminum Epoxy Mastic primer coat and all steel surfaces are dust free. Apply the Aluminum Epoxy Mastic primer coat within 8 hours of blast cleaning, unless specified otherwise by the BCE.

710.4.1.2.1 When Aluminum Epoxy Mastic paint is specified for existing structural steel, clean surfaces to be in contact with new concrete and areas adjacent to bolted connections and splices, including bolt holes, as stated in paragraph 1 of this subsection. Furthermore, ensure that this blast cleaning operation re-moves all existing paint and any layered rust. Perform abrasive blasting with recyclable steel grit abrasive. Wire brush primed surfaces damaged by blast-ing. If visibly rusted, re-blast to cleaned condition specified.

710.4.1.2.1 Immediately prior to the application of any specified intermediate coat or finish coat of paint, clean steel surfaces of all contaminants present on the coated surface in accordance with the paint manufacturer’s written instruc-tions unless approved otherwise by the BCE.

710.4.1.2.2

710.4.1.2.2 Application of Paint

710.4.1.2.2 Apply Aluminum Epoxy Mastic primer within 8 hours after cleaning and be-fore any rusting occurs. Mix paint and apply in accordance with the paint manufacturer’s written recommendations using people skilled in this type of work.

710.4.1.2.2 Apply Aluminum Epoxy Mastic primer only when the paint, surrounding air, and steel surface temperatures are above 40ºF. Do not apply paint on damp surfaces. Do not apply paint when, in the opinion of the OMR representative, conditions are otherwise unsatisfactory for the work. Do not apply paint when the surface temperature is less than 5ºF above the dew point.

710.4.1.2.2 Make required touch-up of thin areas of the applied Aluminum Epoxy Mas-tic primer coat within 72 hours after application of paint. Allow cure time, as recommended by the manufacturer, between the application of the Aluminum Epoxy Mastic primer and any specified intermediate and/or finish coat.

710.4.1.2.3 710.4.2.1.1

710.4.1.2.3

710.4.1.2.3 Thickness Requirements

710.4.1.2.3 Mix the primer paint and apply according to the manufacturer’s application instructions. Obtain a smooth uniform coating with a minimum dry film thick-ness of 5 mils without film cracking, sagging, or loss of adhesion.

710.4.1.2.4

710.4.1.2.4 Methods of Application

710.4.1.2.4.1

710.4.1.2.4.1 General

710.4.1.2.4.1 Apply the Aluminum Epoxy Mastic paint by spray, brush, and /or roller ap-plication as specified herein. Do not apply the Aluminum Epoxy Mastic paint by spray if the structure is over existing traffic or in an urban area. Apply Aluminum Epoxy Mastic paint to structures over existing traffic or in urban areas by brushes and/or rollers unless an alternate method is approved by the BCE. However, spray application may be used any time the structure is within a closed containment system.

710.4.1.2.4.2

710.4.1.2.4.2 Brush and/or Roller Application

710.4.1.2.4.2 Apply a minimum of two coats, with each obtaining a required minimum dry film thickness of 5 mils, when utilizing brush and /or roller application. Use brushes and rollers of such quality that foreign materials are not deposited in the paint film. Only use solvents approved by the paint manufacturer.

710.4.1.2.4.3

710.4.1.2.4.3 Spray Application

710.4.1.2.4.3 Use spray equipment suitable for the intended purpose. Control painting by appropriate pressure regulators and gauges. Use air caps, nozzles, and nee-dles recommended by the manufacturer of the paint being sprayed. Adjust the pressure on the paint in the pot and the air at the gun when necessary for changes in elevation of the gun above the pot.

710.4.1.2.4.3 Maintain the spray equipment in satisfactory condition to permit proper ap-plication. Keep the spray equipment sufficiently clean so that dirt, dried paint, and other foreign materials are not deposited in the paint film. Completely remove cleaning solvents left in the equipment before applying paint to the steel surface. Only use solvents approved by the paint manufacturer.

710.4.2

710.4.2 Field Painting

710.4.2.1

710.4.2.1 New Superstructure Steel

710.4.2.1

710.4.2.1.1 General

710.4.2.1.1 Immediately prior to the application of any specified intermediate coat or finish coat of paint, clean steel surfaces of all rust, dirt, inorganic zinc primer dry spray, grout and/or concrete spillage, or any other contaminants present on the surface in accordance with the paint manufacturer’s written instructions unless otherwise approved by the BCE. Do not allow that the maximum time between application of the intermediate coat of paint and the finish coat of paint to exceed 30 calendar days. Apply field coats of paint only when the surrounding air, the steel surface, and the paint temperatures are above 40ºF.

Do not apply paint on damp surfaces. Do not apply paint when the air is misty

710.4.2.1.2 710.4.2.1.4.3 or, in the opinion of the BCE, is otherwise unsatisfactory for work. Do not ap-ply paint when the surface temperature is less than 5ºF above the dew point.

710.4.2.1.2

710.4.2.1.2 Surface Preparation

710.4.2.1.2 Clean surface areas and all high strength bolts, washers, and nuts (except galvanized bolts, washers, and nuts) as described in Subsection 710.4.2.1.1 using wire brushes or other suitable tools of all objectionable material as listed above to the satisfaction of the BCE. Clean galvanized bolts, washers, and nuts of all oil, lubricant, dirt, or objectionable material using a solvent that is recommended by the paint manufacturer and approved by the OMR. In addi-tion to the specified cleaning and just prior to the application of the intermedi-ate coat of paint, pressure wash (1500 psi minimum water pressure) all sur-face areas of the structural steel and all high strength bolts, washers, and nuts (plain or galvanized), and then, immediately blow dry with oil free and moisture free compressed air.

710.4.2.1.3

710.4.2.1.3 Field Touch-up Coat

710.4.2.1.3 Apply a field touch-up coat of paint to all surface areas of structural steel with damaged primer paint and/or deficient (thin dry film thickness) primer paint. Immediately after field cleaning as specified above and before any rusting occurs (within 8 hours), apply a touch-up coat (5 mils minimum dry film thickness) of approved Aluminum Epoxy Mastic paint produced by the same manufacturer as the Inorganic Zinc Silicate primer to the above noted steel surfaces.

710.4.2.1.3 Allow the Inorganic Zinc Silicate primer paint to cure a minimum of 60 cal-endar days (no maximum) before application of the touch-up coat of paint.

Allow the touch-up coat of Aluminum Epoxy Mastic paint to cure as recom-mended by the paint manufacturer before application of the intermediate coat of paint.

710.4.2.1.4

710.4.2.1.4 Field Coats

710.4.2.1.4.1

710.4.2.1.4.1 Paint System NS1

710.4.2.1.4.1 Apply field coats of paint to all new structural steel including all grades of weathering steel in Paint Zone A as specified in Subsection 710.2.7.1.

710.4.2.1.4.2

710.4.2.1.4.2 Paint System NS2

710.4.2.1.4.2 Apply field coats of paint to all structural steel including all grades of weath-ering steel in Paint Zone B as specified in Subsection 710.2.7.2 unless noted otherwise in the Plans.

710.4.2.1.4.3

710.4.2.1.4.3 Contractor Proposed Plan

710.4.2.1.4.3 The Contractor may elect to apply the specified field coats of paint before casting the concrete bridge deck provided the following conditions are satis-fied:

A. The proposed plan (including site location and applicator) for apply-ing the required field coats of paint is submitted to the BCE for re-view and approval a minimum of 30 calendar days prior to beginning

710.4.2.1.5 710.4.2.1.5.3 the painting work.

B. The contact surfaces (including surfaces in contact with the nuts and bolt heads) of all bolted or welded steelwork is masked and does not receive the specified field coats of paint until after all steelwork is to-tally erected and all bolted or weld connections are complete.

C. Any required cleaning and touch-up of the primer coat of paint is per-formed as noted in Subsections 710.4.2.1.1 and 710.4.2.1.2 before applying any specified field coat of paint, and the Inorganic Zinc Sili-cate primer paint’s cure time is a minimum of 60 calendar days be-fore application of any specified field coat of paint.

D. Any damage to the painted steelwork is corrected before the final in-spection of the project.

E. The painted steelwork is pressure washed (1200 psi maximum) within 6 hours after casting the deck to remove any drippings or runs of concrete from the painted steelwork. Any objectionable material on the steelwork not removed by pressure washing is removed to the satisfaction of the RCE by other suitable means recommended by the paint manufacturer.

F. Special handling procedures are furnished for proposed handling, transporting, and placing the structural steel to minimize damage to the painted steelwork. The paint manufacturer’s data is furnished with the minimum time before handling steelwork after paint has been applied on the steel surface.

G. The specified finish coat of field paint cures a minimum of 2 weeks prior to casting the deck concrete.

710.4.2.1.5

710.4.2.1.5 Application of Paint

710.4.2.1.5.1

710.4.2.1.5.1 General

710.4.2.1.5.1 Allow the Inorganic Zinc Silicate primer paint applied as specified in Subsection 710.4.1 to cure a minimum of 60 calendar days (no maximum) before application of either intermediate coat of paint.

710.4.2.1.5.2

710.4.2.1.5.2 High Build Aliphatic Polyurethane Paint

710.4.2.1.5.2 Apply a single finish coat of High Build Aliphatic Polyurethane paint on steelwork that has been coated with the intermediate coat of Aluminum Epoxy Mastic paint. Make required touch-up of thin areas of the applied coating within 48 hours after application of the paint. Allow a cure time as recom-mended by the paint manufacturer between the application of the Aluminum Epoxy Mastic paint and the finish coat of High Build Aliphatic Polyurethane paint.

710.4.2.1.5.3

710.4.2.1.5.3 Acrylic Paint

710.4.2.1.5.3 Apply a single finish coat of the Acrylic paint to steelwork which has been coated with the intermediate coat of Acrylic paint as specified in Subsection

710.2.7.2. Allow a cure time between the intermediate coat and the finish coat of Acrylic paint as recommended by the paint manufacturer unless ap-

710.4.2.1.6 710.4.2.1.7.5 proved otherwise by the BCE.

710.4.2.1.6

710.4.2.1.6 Thickness Requirements

710.4.2.1.6 Apply paint coat with a minimum dry film thickness as specified in Subsection 710.2.7.2. Apply a smooth uniform coating without film cracking, sagging, or loss of adhesion.

710.4.2.1.7

710.4.2.1.7 Methods of Application

710.4.2.1.7.1

710.4.2.1.7.1 Brush and/or Roller Application

710.4.2.1.7.1 Use brushes and rollers that are of such quality that foreign materials are not deposited in the paint film. Apply a minimum of two coats of Aluminum Epoxy Mastic paint with each obtaining a required dry film thickness of 5 mils when utilizing the brush and/or roller method of application. For all other ap-plied coatings, apply with brush and/or roller application as specified by the paint manufacturer.

710.4.2.1.7.2

710.4.2.1.7.2 Spray Application

710.4.2.1.7.2 Use equipment suitable for the intended purpose. Control painting by ap-propriate pressure regulators and gauges. Use air caps, nozzles, and nee-dles recommended by the manufacturer of the paint being sprayed. Adjust the pressure on the paint in the pot and the air at the gun when necessary for changes in elevation of the gun above the pot.

710.4.2.1.7.2 Maintain the spray equipment in satisfactory condition to permit proper ap-plication. Keep the spray equipment sufficiently clean so that dirt, dried paint, and other foreign materials are not deposited in the paint film. Completely remove solvents left in the equipment before applying paint to the steel sur-face. Use only solvents approved by the manufacturer.

710.4.2.1.7.3

710.4.2.1.7.3 Aluminum Epoxy Mastic Paint

710.4.2.1.7.3 The Aluminum Epoxy Mastic paint may be applied by spray, brush and/or roller application, except if structure is over existing traffic or in an urban area, in which case, apply paint by brushes and/or rollers unless an alternate method is approved by the BCE. Spray application may be used any time the structure is within a closed containment system.

710.4.2.1.7.4

710.4.2.1.7.4 High Build Aliphatic Polyurethane Paint

710.4.2.1.7.4 Apply High Build Aliphatic Polyurethane paint by spray application unless approved otherwise by the BCE. If the structure is over existing traffic or in an urban area, use a closed containment system unless otherwise permitted by the BCE.

710.4.2.1.7.5

710.4.2.1.7.5 Acrylic Paint

710.4.2.1.7.5 Apply the intermediate coat of Acrylic paint by spray application. If the structure is over existing traffic or in an urban area, use a closed containment system unless otherwise permitted by the BCE.

710.4.2.1.7.5 Apply the finish coat of Acrylic paint by either spray, brush and/or roller ap-

710.4.2.2 710.4.2.2.5 plication, except if structure is over existing traffic or in an urban area, in which case, apply paint by brushes and/or rollers unless an alternate method is approved by the BCE. Spray application may be used any time the struc-ture is within a closed containment system.

710.4.2.2

710.4.2.2 New Steel H-Bearing Piling and Sway Braces

710.4.2.2.1

710.4.2.2.1 General

710.4.2.2.1 Steel piling that is entirely below ground need not be painted. Paint ex-posed portions of steel piling from the bottom of bent cap down to an eleva-tion 1 foot below the 100-year scour line as shown on the Plans. When the 100-year scour line is not shown on the Plans, paint the piling to a depth of 5 feet below the ground line or streambed elevation whichever depth is greater.

Paint exposed steel angle sway bracing welded to steel piles. Paint piles driven through water either before driving or before the portion of the pile on which paint is required reaches the water level.

710.4.2.2.2

710.4.2.2.2 Surface Preparation

710.4.2.2.2 Clean the portions of the piles and sway braces that require paint with wire brushes or other suitable tools to remove all rust, dirt, oil, grease, concrete spillage, and other objectionable materials to the satisfaction of the RCE.

710.4.2.2.3

710.4.2.2.3 Field Coats

710.4.2.2.3 Paint the portions of the piles and sway braces that require paint in accor-dance with Paint System NS3 as specified in Subsection 710.2.7.3.

710.4.2.2.4

710.4.2.2.4 Application of Paint

710.4.2.2.4 Apply Aluminum Epoxy Mastic primer within 12 hours after cleaning and before any rusting occurs. Apply paint in accordance with the paint manufac-turer’s written recommendations using people skilled in this type of work.

710.4.2.2.4 Touch-up of thin areas of the applied Aluminum Epoxy Mastic primer coat within 72 hours after application of paint. Allow a cure time between the ap-plication of the Aluminum Epoxy Mastic primer and the Aluminum Epoxy Mas-tic finish as recommended by the paint manufacturer. Do not allow the maxi-mum time between the application of the Aluminum Epoxy Mastic primer and the Aluminum Epoxy Mastic finish coat to exceed 30 calendar days.

710.4.2.2.5

710.4.2.2.5 Thickness Requirements

710.4.2.2.5 Mix and apply the intermediate coat and finish coat of paint according to the paint manufacturer’s application instructions. Ensure that the applied coat obtains a minimum dry film thickness as specified in Subsection 710.2.7.3.

Apply a smooth uniform coating without film cracking, sagging, or loss of ad-hesion.

710.4.2.2.6 710.4.2.3.5

710.4.2.2.6

710.4.2.2.6 Methods of Application

710.4.2.2.6 Apply the Aluminum Epoxy Mastic paint by either spray, brush and/or roller application in accordance with Subsection 710.4.2.1.7.3.

710.4.2.3

710.4.2.3 Existing Structural Steel

710.4.2.3.1

710.4.2.3.1 Surface Preparation

710.4.2.3.1 Prior to the application of the intermediate coat and finish coat of paint, clean surface areas of dirt, oil, grease, rust, grout, concrete spillage, and other contaminants present on the coated surface in accordance with the paint manufacturer’s written instructions unless approved otherwise by the

BCE.

710.4.2.3.2

710.4.2.3.2 Field Touch-up Coat

710.4.2.3.2 Re-coat surface areas that have been damaged by the cleaning operation and surface areas deficient in primer dry film thickness in accordance with Subsection 710.4.1.2.3.

710.4.2.3.3

710.4.2.3.3 Field Coats

710.4.2.3.3 Paint all structural steel as specified in Subsection 710.2.7.

710.4.2.3.4

710.4.2.3.4 Application of Paint

710.4.2.3.4.1

710.4.2.3.4.1 Aluminum Epoxy Mastic Paint

710.4.2.3.4.1 Cure Aluminum Epoxy Mastic primer paint as recommended by the paint manufacturer before the application of the intermediate coat of Aluminum Ep-oxy Mastic paint. Do not allow the maximum time between the application of the Aluminum Epoxy Mastic primer and the Aluminum Epoxy Mastic finish coat to exceed 30 calendar days.

710.4.2.3.4.2

710.4.2.3.4.2 High Build Aliphatic Polyurethane Paint

710.4.2.3.4.2 Touch-up thin areas of the applied coating within 48 hours after application of the paint. Ensure that the cure time between the application of the Alumi-num Epoxy Mastic Paint and the finish coat of High Build Aliphatic Polyure-thane is as recommended by the paint manufacturer. Do not allow the maxi-mum time between the application of the Aluminum Epoxy Mastic Paint and the finish coat of High Build Aliphatic Polyurethane to exceed 30 calendar days.

710.4.2.3.5

710.4.2.3.5 Thickness Requirements

710.4.2.3.5 Mix and apply the intermediate coat and finish coat of paint according to the manufacturer’s application instructions. Ensure that the applied coat has a minimum dry film thickness as specified in Subsection 710.2.7. Ensure that a smooth uniform coating is applied without any film cracking, sagging, or loss of adhesion.

710.4.2.3.6 710.6

710.4.2.3.6

710.4.2.3.6 Methods of Application

710.4.2.3.6.1

710.4.2.3.6.1 Aluminum Epoxy Mastic Paint

710.4.2.3.6.1 Apply the Aluminum Epoxy Mastic paint either by spray, brush, and/or roller application as specified in Subsection 710.4.2.1.7.3.

710.4.2.3.6.2

710.4.2.3.6.2 High Build Aliphatic Polyurethane Paint

710.4.2.3.6.2 Apply the High Build Aliphatic Polyurethane Paint by spray application as specified in Subsection 710.4.2.1.5.2.

710.4.3

710.4.3 Measurement of Dry Film Paint Thickness

710.4.3 Perform measurement of dry film paint thickness in accordance with the SSPC PA-2, Paint Application Specification No. 2 unless specified otherwise by the BCE.

710.5

710.5 Measurement

710.5 Painting of new structural steel is not measured for direct payment, and is considered included in the various items of construction on which paint is ap-plied.

710.5 The quantity for the pay item Cleaning and Painting Existing Structural

Steel is measured for payment as a lump sum (LS) unit; therefore, no specific measurement is made.

710.6

710.6 Payment

710.6 The work and materials required, described, and specified in the cleaning and painting of new structural steel in accordance with these specifications, the Plans, the Special Provisions, or as directed is not paid for directly, and is considered as part of the work pertaining to the various items of construction on which paint is applied, and the cost is included in the contract bid price for each such item.

710.6 Include all costs of materials, labor, equipment, tools, supplies, transporta-tion, and incidentals necessary to clean and paint the sway braces and steel piling in accordance with these specifications in the contract unit bid price for the item Steel H-Bearing Piling, as specified in Subsection 711.6.

710.6 Payment for Cleaning and Painting Existing Structural Steel is determined using the contract lump sum bid price for the pay item. Payment is full com-pensation for cleaning and painting existing structural steel in accordance with these specifications, the Plans and/or the Special Provisions or as directed and includes surface preparation; furnishing and applying paint systems of the color, type, and thickness specified; scaffolding, platforms, and falsework;

brushes, rollers, sprayers, and other painting equipment; cleaning up and dis-posing of paint materials; protection of people and property; safety equipment;

and all other materials, labor, equipment, tools, supplies, transportation, and incidentals necessary to fulfill the requirements of the pay item in accordance with the Plans, the Specifications, and other terms of the Contract.

4 Payment for each item includes all direct and indirect costs and expenses

710.6 710.6

710.6 required to complete the work.

710.6 Pay items under this section include the following:

710.6

Item No. Pay Item Unit

7101000 Cleaning and Painting Existing Structural Steel LS

710100X Cleaning and Painting Existing Structural Steel

- Bridge #X

LS