513FIELD PAINTING STEEL

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5-184SECTIO N 513 – FIELD PAINTIN G STEEL

513.0 1 DESCRIPTION . This work shall consist of the preparation and coating of the designated surfaces with the materials and methods specified in the Contract. All steel to be painted under this specification shall be bare steel. 513.0 2 MATERIALS. Materials shall meet the requirements of the following subsections: Structural Steel Coating Systems ................................ ................................ ............... 708.0 3 Grease Rustproofing Compound ................................ ................................ ................ 708.0 4 513.0 3 QUALIFICATIONS . The following qualification requirements shall be met and certified status shall be maintained throughout the duration of the painting work under the Contract.

certifications.

NACE Coating Inspector Level 2 – Certified.

NACE Coating Inspector Level 1 - Certified . 513.0 4 SEQUENCE OF WORK . The Contractor shall prepare the surfaces specified in the Plans in accordance with the follo wing sequence:

the requirements of the Contract prior to the initiation of work under this specification. All payment for the removal and disposal of existing coatings will be made under the appropriate Section 511 pay items.

requirements specified in Subsection 513.15 .

specified in Subsection 513.17 .

the requirements of this specification.

513 5-185 513.0 5 HOLD POINTS. Specific inspection items throughout these specifications are designated as hold points . These hold points are for the Engineer to perform QA inspections of the completed specified work. Unless an alternative timeframe is required by this specification o r other arrangements are made at the project site, the Contractor shall notify the Engineer a minimum of 4 hours before a hold point will be reached. If the 4 hour notification is provided and the work is ready for inspection at that time, and the necessar y QC inspections are performed, the Engineer will conduct the necessary QA observations. QA inspections will be performed only after a proper QC inspection by the Contractor. If the work is not ready at the appointed time, unless other arrangements are made, an additional 4 hour notification is required. Permission to proceed beyond a hold point without a QA inspection will be granted solely at the discretion of the Engineer, a nd only on a case -by-case basis. If re-work is necessary as determined by a QA inspection, it shall be accomplished and a new hold point for the re -work shall be observed as defined above. 513.0 6 SUBMITTALS . The Contractor shall submit to the Engineer, i n accordance with Subsection 105.0 6, the following information for completing the work. Complete submittals shall be provided a minimum of 21 calendar days prior to the anticipated start of the work.

their qualifications and the names and qualifications, experience, and training of the personnel managing and implementing the quality control program and conducting the quality control tests. At a mi nimum this sh all include the quality control manager and the quality control inspector . Copies of certifications shall be provided to show that all requirements of Subsection 513.03 have been met.

and shall identify the following:

control findings.

513 5-186 (c) Inspection Access Plan . The inspection access plan is for use by the Contractor ’s QC personnel for ongoing inspections and by the Engineer during quality assurance (QA) observations. The plan shall include the design of any necessary scaffolding or staging required for QC/QA inspections. All staging and scaffolding shall be designed by a qualified professional engineer .

specified methods of surface preparation and types of equipment to be used for water washing; hand and power tool cleaning; removal of rust, mill scale, grease, or foreign matter; abrasive blast cleaning; and remediation of chloride. If d etergents, additives, or inhibitors are incorporated into the water used for any coating work operations, the plan shall include the names of the materials and safety data sheets (SDS). The plan shall identify the solvents proposed for solvent cleaning, t ogether with the SDS. The plan shall also include the methods of coating application, including any required stripe coats, and all equipment to be used. Stripe coats shall only be applied by brushing, the use of rollers or daubers will not be permitted. If the Contractor proposes to heat or dehumidify the containment, the methods and equipment proposed for use shall be included in the plan for the Engineer’s consideration.

and the SDS. For expendable abrasives, the Contractor shall provide certification from the abrasive supplier that the abrasive meets the requirements of SSPC -AB 1. For steel grit abrasives, the certification shall indicate that the abrasive meets the requirements of SSPC -AB 3.

manufacturer’s application and thinning instructions, SDS, and product data sheets for each and every coating, thinner, s ealer, and grease rustproofing compound. Specific attention shall be drawn to storage temperatures and the temperatures of the material, surface, and ambient air at the time of application. The following information shall be provided by the coating manufac turer’s technical representative in written form:

temperatures during each of the curing/drying periods.

513 5-187 (2) Drying schedules (similar to that found on the product data sheet) representing dry to handle, dry to recoat , and full cure, for each coat, at both the minimum and maximum DFT range as specified in Subsection 513.19(g) . These schedules shall also include the minimum time that each coat must be protected from cold and inclement weather (e.g. exposure to rain, snow, temperatures below 40°F, etc.) These drying schedules shall account for varying temperatures and low ventil ation (where applicable). If the product used is a moisture cured product or a water -based product, these schedules shall be for 50% relative humidity, or the lowest relative humidity that is expected to be encountered. It is acceptable for the manufactu rer to provide variable ranges, or multiple curing/drying schedules. The curing/drying times given in the schedule will be considered applicable provided that the actual field conditions are within the tolerances specified below. If the actual field cond itions exceed the tolerances listed below, the schedule shall be modified by the manufacturer’s technical representative prior to painting. It shall be noted that the unlimited tolerances listed below are only unlimited in regards to affecting curing/dryin g times and do not supersede limits stated elsewhere in this specification or the product data sheets.

(only applies to moisture cured and water -based products)

schedule shall acknowledge these conditions and the curing/drying schedule shall reflect these conditions. Copies of these documents shall be available on the project site at all times. When the Contractor proposes to use penetrating sealer, sealant caulk, rust inhibitor, or chemical soluble salt remover, they shall submit a letter from the coating system manufacturer indicating that the material will not adversely affect the performance of the coating system.

surface preparation and paint debris (e.g. abrasive medi a, droplets, spills, overspray, etc.).

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5-188If dry abrasive blast cleaning without vacuum is used, the containment shall meet the requirements

of SSPC Class 1A. If dry abrasive vacuum blast cleaning is used, the containment shall meet the requirements of S SPC Class 4A. Any tarpaulins or protective coverings proposed for use shall be fire retardant.

and associated hold points (e.g. installation of rigging and containment, surface preparation, and coating application). The Contractor shall provide updated progress schedules as requested by the Engineer. When the Engineer accepts the submittals, the Contractor will receive written notification. The Contractor shall not begin any work covered under this specification until the Engineer has accepted the submittals and a pre -paint meeting has been held, as de fined in Subsection 513.11 . The Contractor shall not construe Engineer acceptance of the submittals to imply approval of any particular method or sequence for conducting the work, or for addressing health and safety concerns. Acceptance of the submittals does not relieve the Contractor from the responsibility to conduct the work according to the requirements of federal, state, or local regulations, this specification, or to adequately protect the health and safety of all workers involved in the project and any members of the public who may be affected by the project. The Contractor remains solely responsible for the adequacy and completeness of the programs and work practices, and adherence to them.

513.07QUALITY CONTROL (QC) INSPECTIONS . The C ontractor shall perform first line, in progress

QC inspections. The Contractor shall implement the submitted and accepted QC program to ensure that the work accomplished complies with these specifications.

QC program. The quality control manager shall be on the project for the first 48 hours of paint application and after that time be available to be back on the project with 24 hours’ notice. The quality c ontrol inspector shall not participate in any production activities related to surface preparation or painting and shall be onsite full time during any operations that affect the quality of the coating system, including but not limited to surface preparati on and chloride remediation, coating mixing and application, and evaluations between coats, and upon project completion. Completed daily reports for all quality control testing and observations shall be provided to the

Engineer before work resumes the following day.

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The personnel performing any QC tests shall be trained in coatings inspection and the use of the

testing instruments. Documentation of training shall be provided. Painters shall perform wet film

thickness measurements, with the quality control inspector conducting random spot checks of the

wet film. The Contractor shall not replace the QC personnel assigned to the project without

advance notice to the Engineer, and acceptance of the replacements by the Engineer.

paint spills, overspray, etc.

power tool cleaning, abrasive blast cleaning, etc.).

wet and dry film thickness).

shadow-through, skips, misses, etc.).

applicable product batch numbers.

to perform QC inspections:

humidity, together with all necessary weather bureau tables or psychrometric charts.

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between 1 and 3 inches.

inspection activities.

The instruments shall be calibrated within 12 months of the date of project usage or according to

the equipment manufacturer’s recommendations and the Contractor’s QC program if they require

a shorter duration.

If item 631.1800 is not included in the Contract, the Contractor’s QC inspection equipment shall

be made available to the Engineer for QA observations as requested.

513.08QUALITY ASSURANCE (QA) OBSERVATIONS. The Engineer will conduct QA observations

of any or all phases of the work. The presence or activity of Engineer observations in no way relieves the

Contractor of the responsibility to provide all necessary daily QC inspections and to comply with all

requirements of this specification.

The Engineer has the right to reject any work that was performed without adequate provision for QA

observations.

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513.09INSPECTION ACCESS AND LIGHTING. The Contractor shall facilitate the Engineer’s

observations as required, including allowing ample time to view the work. The Contractor shall furnish,

erect, and move scaffolding or other mechanical equipment to permit close observation of all surfaces to

be cleaned and painted. This equipment shall be provided during all phases of the work.

Examples of acceptable access structures include:

including rails and kick boards.

system according to VOSHA regulations are approved.

When the surface to be inspected is more than 6 feet above the ground or water surface, and fall protection

is not provided (e.g. railings), the Contractor shall provide the Engineer with a lifeline according to

VOSHA regulations. The lifeline and attachment shall not direct the fall into oncoming traffic. The

Contractor shall provide a method of attaching the lifeline to the structure independent of the inspection

facility or any support of the platform. When the inspection facility (e.g. platform) is more than 2-1/2 feet

above the ground, the Contractor shall provide a VOSHA compliant means of access onto the platform.

The Contractor shall provide artificial lighting in areas where natural light is inadequate, as determined

by the Engineer, to allow proper cleaning, inspection, and painting. Illumination for inspection shall be at

least 30 foot-candles. Illumination for cleaning and painting, including the working platforms, access, and

entryways shall be at least 20 foot-candles.

513.10SURFACE PREPARATION AND PAINTING EQUIPMENT. All cleaning and painting

equipment shall include gauges capable of accurately measuring fluid and air pressures and shall have

valves capable of regulating the flow of air, water, or paint as recommended by the equipment

manufacturer. The equipment shall be maintained in proper working order.

Diesel or gasoline powered equipment shall be positioned or vented in a manner to prevent deposition of

combustion contaminants on any part of the structure.

Hand tools, power tools, pressure washing, water jetting, abrasive blast cleaning equipment, brushes,

rollers, and spray equipment shall be of suitable size and capacity to perform the work required. All power

tools shall be equipped with vacuums and high efficiency particulate air (HEPA) filtration.

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Appropriate filters, traps, and dryers shall be provided for the compressed air used for abrasive blast

cleaning and conventional spray application. Paint pots shall be equipped with air operated continuous

agitation devices unless prohibited by the coating manufacturer.

The air discharge from power tools and air motors shall be directed away from steel surfaces. If this is not

possible a filtering device shall be appropriately placed.

513.11PRE-PAINT MEETING. A meeting shall be held after the acceptance of all submittals related to

the structural steel painting. Work under this specification shall not proceed until after this meeting has

been held.

The purpose of the meeting shall be to review all aspects of the surface preparation and painting of the

steel.

Individuals attending the meeting representing the Contractor shall be the project superintendent, quality

control manager, and the quality control inspector. a qualified manufacturer’s technical representative for

the coating system shall also attend.

The Engineer will notify the Contractor a minimum of 7 calendar days in advance of the meeting.

If a pre-work meeting for paint removal operations is required by another item in the Contract, that meeting

may be combined with the pre-paint meeting of this specification. If combined into one meeting, the

meeting shall occur prior to any paint removal or painting activities.

513.12TEST SECTIONS (HOLD POINT). Prior to surface preparation, the Contractor shall prepare test

sections on each structure to be painted in locations which the Engineer considers to be representative of

the existing surface condition and steel type for the structure as a whole. More than one test section may

be needed to represent the various design configurations of the structure.

The purpose of the test sections is to demonstrate the use of the tools and degree of cleaning required

(cleanliness and profile) for each method of surface preparation that will be used on the project. Each test

section shall be approximately 10 square feet. The test sections shall be prepared using the same

equipment, materials, and procedures as the production operations.

The Contractor shall prepare the test sections to the specified level of cleaning according to the appropriate

SSPC visual standards, modified as necessary to comply with the requirements of these specifications.

The written requirements of these specifications prevail in the event of a conflict with the SSPC visual

standards. Only after the test sections have been approved shall the Contractor proceed with surface

preparation operations.

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The test section shall be preserved and sealed with a clear coat. At the conclusion of painting activities

the test section shall be re-blasted and the specified coating system applied.

For the production cleaning operations, these specifications and written definitions, the test sections, and

the SSPC visual standards shall be used, in that order, for determining compliance with Contract

requirements.

Additional compensation will not be paid to the Contractor for preparation of the test sections.

513.13AMBIENT CONDITIONS. Surfaces to be painted after cleaning shall remain free of moisture

and other contaminants. The Contractor shall control operations to ensure that dust, dirt, or moisture does

not come in contact with surfaces cleaned or painted that day. The following ambient conditions shall be

met:

preparation operations.

point, and the maximum relative humidity shall be 85% or less during the application and cure/dry

time in accordance with the information provided in Subsection 513.06(f)(2). If the manufacturer’s

published literature is more restrictive, it shall be followed for specific temperature, dew point,

and humidity conditions during the application and cure/dry time of each coat.

The cure/dry time shall be measured as the time following application when the ambient conditions

are within the ranges above.

and equipment for heating or dehumidification shall be included in the surface preparation and

painting plan submitted for the Engineer’s review. Any heating or dehumidification proposals

reviewed by the Engineer shall be implemented at no additional cost to the Agency.

th and October 31 st , inclusive,

unless otherwise authorized in writing by the Engineer.

If the weather conditions are forecast to be outside the limits above during surface preparation, application,

or the applicable curing/drying period, then work shall not proceed.

The Contractor shall monitor and document temperature, dew point, and relative humidity at the beginning

of each work day and every 4 hours during surface preparation and coating application, in the specific

areas where the work is being performed. The frequency of monitoring shall increase if weather conditions

are changing.

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If the weather conditions are forecast to be borderline relative to the limits established by the manufacturer,

monitoring shall continue at a minimum of 4 hour intervals throughout the applicable curing/drying

period.

The Engineer has the right to reject any work that was performed under unfavorable weather conditions.

Rejected work shall be removed, re-cleaned, and re-painted at the Contractor’s expense.

513.14COMPRESSED AIR CLEANLINESS. Prior to using compressed air for abrasive blast cleaning,

blowing down the surfaces, and painting with conventional spray, the Contractor shall verify that the

compressed air is free of moisture and oil contamination in accordance with the requirements of ASTM

D4285. The tests shall be conducted at least one time each shift for each compressor system in operation.

If air contamination is evident, the Contractor shall change filters, clean traps, add moisture separators or

filters, or make other adjustments as necessary to achieve clean, dry air. The Contractor shall also examine

the work performed since the last acceptable test for evidence of defects or contamination caused by the

compressed air. Affected work shall be repaired at the Contractor’s expense.

513.15SURFACE PREPARATION (HOLD POINT). All designated surfaces shall be prepared for

coating by dry abrasive blast cleaning, including areas that may be concealed by the containment

connection points. All equipment allowed under SSPC-SP 10, including vacuum blast cleaning equipment,

shall be permitted.

The Contractor shall note that the surface of the steel beneath the existing coating system may contain

corrosion or mill scale. If said corrosion or mill scale is not removed under another item in the Contract,

then its removal shall be considered included in this work and no extra compensation will be allowed.

Following surface preparation, soluble salts shall be remediated as specified in Subsection 513.17.

requirements of SSPC-SP 10.

abrasives (other than silica sand) or recyclable steel grit abrasives. Expendable abrasives

shall be used one time and disposed of.

On a daily basis, the Contractor shall verify that recycled abrasives are free of oil

contamination by conducting oil content tests in accordance with SSPC-AB 2.

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All surfaces prepared with abrasives not meeting the SSPC-AB 1, SSPC-AB 2, or SSPC-AB

3 requirements, as applicable, shall be solvent cleaned or low pressure water cleaned as

directed by the Engineer, and re-blast cleaned at the Contractor’s expense.

When metallic abrasives are used, extra care shall be taken to recover all of the abrasive

from joints, horizontal surfaces, and hard to access areas to prevent rust bleed caused by

fugitive abrasives.

magnification, shall be free of all visible oil, grease, dirt, dust, mill scale, rust, paint, oxides,

corrosion products, and other foreign matter, except for staining.

Random staining shall be limited to no more than 5% of each 9 square inches of surface

area and may consist of light shadows, slight streaks, or minor discoloration caused by

stains of rust, stains of mill scale, or stains of previously applied paint. With the exception

of crevices as defined below, surface discoloration will be considered to be a residue that

must be removed, rather than a stain, if it possesses enough mass or thickness that it can be

removed as a powder or in chips when scraped with a pocketknife.

A surface profile shall be created on the steel as defined in Subsection 513.15(d).

At the discretion of the Engineer, after a best effort cleaning, slight traces of existing

coating may be permitted to remain within crevices such as those created between rivets,

bolts, and plates, and the underlying steel. When traces of coating are permitted to remain,

the coating shall be tightly bonded when examined by probing with a dull putty knife. The

traces of coating shall be confined to the bottom portion of the crevices only, and shall not

extend onto the surrounding steel or plate or onto the outer surface of the rivets or bolts.

Pitted steel is excluded from exemption considerations and shall be cleaned in accordance

with SSPC-SP 10.

If hackles or slivers are visible on the steel surface after cleaning, the Contractor shall

remove them by grinding followed by re-blast cleaning. At the discretion of the Engineer,

the use of power tools to clean the localized areas after grinding, and to establish a surface

profile acceptable to the coating manufacturer, can be used in lieu of blast cleaning.

limited access areas, such as the backsides of rivets inside built-up box members. The equipment

being used for the majority of the cleaning may need to be supplemented with other commercially

available equipment, such as angle nozzles, to properly clean the limited access areas. The

acceptability of the best effort cleaning in these areas is at the sole discretion of the Engineer.

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torch cutting, shearing, or milling, shall be rounded to a radius between 1/16 inch and 1/8 inch.

The Engineer will tactilely or visually assess the edges and corners and document that they were

appropriately rounded.

will produce a uniform surface profile of 1.5 mils to 3.5 mils. If the profile requirements of the

coating manufacturer are more restrictive, the Contractor shall advise the Engineer and comply

with the more restrictive requirements. For recycled abrasives, an appropriate operating mix shall

be maintained in order to control the profile within these limits.

The surface profile produced by the Contractor’s surface preparation procedures shall be

determined by replica tape and spring micrometer at the beginning of the work, and each day that

the surface preparation is performed. Areas having unacceptable measurements shall be further

tested to determine the limits of the deficient area. The replica tape shall be attached to the daily

report.

When unacceptable profiles are produced, work shall be suspended. The Contractor shall submit

a plan for the necessary adjustments to ensure that the correct surface profile is achieved on all

surfaces. The Contractor shall not resume work until the new profile is verified by the QA

observations and the Engineer confirms that the profile is acceptable.

requires installation of bolts that are to be painted. This work shall occur after bolt tensioning has

been completed.

All exposed oils, lubricants, and wax on the bolts, nuts, washers, and surrounding surfaces to be

painted shall be completely removed by solvent cleaning. This also includes any foreign material

that has come out of the DTIs during the tensioning process. Light hand wire brushing or scrubbing

with bristle brushes is allowed. Use of power tools is not allowed.

For galvanized hardware, the Contractor shall remove the colored lubricant from the nuts. The

galvanizer may be able to provide information to the Contractor on the most effective solvent

cleaner to remove the colored lubricant (common examples include methyl-ethyl-ketone (MEK),

foaming glass cleaners containing ammonia, and foaming alkaline-type household cleaners). It is

not necessary to remove 100% of the dye, and it is acceptable for some staining to remain after

cleaning. A white cloth wipe test with no color transfer can be used to confirm that all lubricant

and non-absorbed dye has been removed, leaving only the residual stain on the surface. The final

cleanliness shall be acceptable to the Engineer.

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513.16STRUCTURAL STEEL MATING SURFACES. All laminar, stratified, or pack rust that has

formed on or between the existing steel surfaces shall be removed as follows:

disassembled, or when new faying surfaces are created on existing steel due to additional steel

being added, the Contractor shall clean and prepare the mating surface as a faying surface. Faying

surfaces for all steel connections shall be abrasive blast cleaned and prime coated only as specified

herein prior to being re-assembled.

The Contractor may request that the Engineer waive the requirements for NACE certification and

SSPC-QP 1 certification from Subsection 513.03 for blast cleaning and priming of faying surfaces

on existing steel only. Requests will be reviewed on a case-by-case basis and will only be

considered if a fully qualified Contractor will not be on site when the faying surfaces are to be

blast cleaned and primed. If the Engineer grants the request, all other requirements for

certifications, inspections, quality control, supplying inspection equipment, hold points, etc. will

remain in effect and the NACE and SSPC-QP 1 certifications will be required for all work other

than blast cleaning and priming of the faying surfaces.

plates or shapes of structural steel shall be removed to the extent feasible without mechanically

detaching the mating surface.

Pack rust between mating surfaces shall be removed to a level equal to or below the level of mating

surfaces between which the rust is packed. Any pack rust remaining after cleaning the mating

surfaces shall be tight and intact when examined using a dull putty knife.

The tools used to remove these corrosion products shall be identified in the submittals and accepted

by the Engineer.

If the surface preparation or removal of rust results in nicks or gouges, the work shall be suspended,

and the damaged areas repaired at the Contractor’s expense to the satisfaction of the Engineer. The

Contractor shall also demonstrate that they have made the necessary adjustments to prevent a

reoccurrence of the damage prior to resuming work.

Epoxy penetrating sealer and sealant caulk shall be applied to pack rusted mating surfaces which

have been addressed as specified above. The sealer and caulk shall be applied per the

manufacturer’s recommendations.

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513.17SOLUBLE SALT REMEDIATION (HOLD POINT). Following dry abrasive blast cleaning, the

Contractor shall implement surface preparation procedures and processes that will remove chloride from

the surfaces. Surfaces that may be contaminated with chloride include, but are not limited to, expansion

joints and all areas that are subject to roadway spray or run-off, such as fascia beams and stringers.

Methods of chloride removal shall be determined by the Contractor. If steam or water cleaning methods

of chloride removal are used over surfaces where the coating has been completely removed, and the water

does not contact any lead containing coatings, the water does not have to be collected. The Contractor

shall provide the proposed procedures for chloride remediation in the surface preparation and painting

plan.

Upon completion of the chloride remediation steps, the Contractor shall use chloride titrator strips to test

representative surfaces that were previously rusted (e.g. pitted steel) for the presence of remaining

chlorides. Remaining chloride levels shall be no greater than 7 micrograms per square centimeter as read

directly from the surface without any multiplier applied to the results. The testing shall be performed, and

the results must be acceptable, prior to painting each day.

A minimum of 5 tests per 1,000 square feet, or fraction thereof completed in a given day, shall be

conducted. If any results of greater than 7 micrograms per square centimeter are detected, the surfaces

shall be re-cleaned and re-tested at the same frequency. If acceptable results are achieved on three

consecutive days in which testing is conducted, the test frequency may be reduced to 1 test per 1,000

square feet prepared each day, provided the chloride remediation process remains unchanged.

If unacceptable results are encountered, or the methods of chloride remediation are changed, the

Contractor shall resume testing at a frequency of 5 tests per 1,000 square feet. The Engineer shall approve

of the actual location of the chloride tests prior to them being performed.

513.18SURFACE CONDITION PRIOR TO PAINTING (HOLD POINT). Prepared surfaces shall meet

the specified degrees of cleaning immediately prior to painting, and shall be painted before rusting appears

on the surface. If rust appears or bare steel remains unpainted for more than 8 hours, the affected area shall

be prepared again at the expense of the Contractor.

All surface preparation cleaning residue on bridge steel surfaces, scaffolding and platforms, containment

materials, and tops of abutments and pier caps shall be removed prior to painting.

The quality of the surface condition and cleaning of surface dust and debris shall be accepted by the

Engineer prior to painting. The Engineer has the right to reject any work that was performed without

adequate provision for QA observations to accept the degree of cleaning. Rejected coating work shall be

removed and replaced at the Contractor’s expense.

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513.19GENERAL PAINT REQUIREMENTS. Paint storage, mixing, and application shall be

accomplished according to these specifications and as specified in the paint manufacturer’s written

instructions and product data sheets for the paint system used. In the event of a conflict between these

specifications and the coating manufacturer’s instructions and data sheets, the Contractor shall advise the

Engineer and comply with the most restrictive requirements.

Unless noted otherwise, if a new concrete deck or repair to an existing deck is required, painting, except

primer painting of surfaces exposed by deck repairs, shall be done after the deck is placed and the forms

have been removed.

instructions, including handling, minimum and maximum temperatures, and warming as required

prior to mixing. All coatings shall be supplied in sealed containers bearing the manufacturer’s

name, product designation, batch number, and mixing and thinning instructions. Leaking

containers shall not be used. The paint shall be stored in a secure, fireproof location.

Mixing shall be performed according to the manufacturer’s instructions. Thinning shall be

performed using thinner provided by the manufacturer, and only to the extent allowed by the

manufacturer’s written instructions. In no case shall thinning be permitted that would cause the

coating to exceed the local volatile organic compound emission restrictions. For multiple

component paints, only complete kits shall be mixed and used. Partial mixing is not allowed.

The ingredients in the containers of paint shall be thoroughly mixed by mechanical power mixers

according to the manufacturer’s instructions, in the original containers before use or mixing with

other containers of paint. The paint shall be mixed in a manner that will break up all lumps,

completely disperse pigment, and result in a uniform composition. Paint shall be carefully

examined after mixing for uniformity and to verify that no unmixed pigment remains on the bottom

of the container.

Excessive skinning or partial hardening due to improper or prolonged storage will be cause for

rejection of the paint, even though it may have been previously inspected and accepted.

Manufacturer recommended induction/sweat-in times and temperature of mixed coatings shall be

observed.

Multiple component coatings shall be discarded after the expiration of the pot life. Single

component paint shall not remain in spray pots, paint buckets, etc. overnight and shall be stored in

a covered container and remixed before use.

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The Engineer reserves the right to sample and test field paint (both individual components and the

mixed material). If the paint does not meet the product requirements due to excessive thinning or

because of other field problems, the coating shall be removed from that section of the structure

and replaced as directed by the Engineer at no additional cost to the Agency.

from the restrictions stated in Subsection 513.13, the more restrictive requirements shall be

followed. The written recommendations required to be submitted in Subsection 513.06(f) shall be

observed. If the actual field conditions differ from what was anticipated at the time of the submittal,

then revised documentation shall be submitted and observed. Upon acceptance by the Engineer,

these times shall be used to govern the duration that protection shall be maintained during

curing/drying.

The manufacturer’s technical representative shall be on the project for the first 48 hours of paint

application and after that time be available to be back on the project with 24 hours’ notice.

shall be applied as a continuous film of uniform thickness free of defects, including, but not limited

to, runs, sags, overspray, dry spray, pinholes, voids, skips, misses, and shadow-through. Defects

such as runs and sags shall be brushed out immediately during application.

Unless prohibited by the coating manufacturer’s written instructions, paint may be applied by

spray methods, rollers, or brushes. If applied with conventional or airless spray methods, paint

shall be applied in a uniform layer with overlapping at the edges of the spray pattern.

The painters shall monitor the wet film thickness of each coat during application. The wet film

thickness shall be calculated based on the specified dry film thickness using the solids by volume

of the material and the amount of thinner added.

When brushes or rollers are used to apply the coating, additional applications may be required to

achieve the specified thickness per layer.

Prime coats shall be applied to all bare metal surfaces. Faying surfaces for disassembled mating

surfaces for steel connections shall receive a prime coat that will remain in the assembled

connection. If disassembled faying surfaces are slip critical, an organic zinc rich primer with an

appropriate slip/creep coefficient shall be applied to the surfaces.

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Damage to vehicles and property caused by the Contractor’s painting or surface preparation

activities shall be remedied at the Contractor’s expense. The Contractor shall ensure that all areas

not scheduled for paint will be protected against overspray. All areas accidentally painted will be

cleaned at the Contractor’s expense.

coating according to the re-coat time/temperature/humidity/dry film thickness criteria provided in

the manufacturer’s instructions submitted as required in Subsection 513.06(f), and when an

additional coat can be applied without the development of film irregularities such as lifting,

wrinkling, or loss of adhesion of the under coat.

If surfaces are contaminated, washing shall be accomplished prior to intermediate and final coats.

Wash water does not have to be collected unless the water contacts existing lead-containing

coatings.

stripe coat to all edges, rivets, bolts, crevices, welds, and similar surface irregularities for each

coating applied (prime, intermediate, and top coats).

The stripe coat shall be applied by brush only (the use of rollers or daubers will not be permitted)

such that the coating is thoroughly worked into or on the irregular surfaces, and shall extend onto

the surrounding steel a minimum of 1 inch in all directions. The purpose of the stripe coat is to

build additional thickness and to assure complete coverage of these areas. The stripe coat is in

addition to the requirement for penetrating sealer.

The stripe coat shall not be applied as part of the application of the full coat. The stripe coat shall

be applied and dried separately according to the manufacturer’s recommended curing/drying times

for re-coating. The color of the stripe coat shall contrast with the colors used for the full coats

immediately preceding and succeeding the stripe coat, except that the top stripe coat may be the

same color as the full top coat.

follows:

prime coat has dried, the prime stripe coat shall be applied.

be applied and allowed to dry, followed by the full intermediate coat.

allowed to dry, followed by the full top coat.

513

specified below, as measured in accordance with SSPC-PA 2.

mils dry film thickness.

and 6.0 mils dry film thickness.

film thickness. The color of the top coat shall be as specified in the Contract and shall

conform to the applicable SAE AMS-STD-595 chip number specified in Subsection

708.03(b)

If the thickness range specified by the manufacturer differs from the range specified above for a

given coat, the required dry film thickness range shall be between the largest specified minimum

thickness and the smallest specified maximum thickness. For example, the thickness range

specified above for the prime coat is 3.5 mils to 5.0 mils. If the manufacturer’s specified prime

coat thickness is 4.0 mils to 6.0 mils, the required thickness range would then be between 4.0 mils

and 5.0 mils.

certain conditions. Amine blush often appears as a yellowish milky or blotchy residue on the

coating surface and is a deterrent to the adhesion of subsequently applied coating layers. If amine

blush is detected, the Contractor shall provide the Engineer with written procedures from the

coating manufacturer for complete removal prior to the application of additional coating layers.

513.20WATER CLEANING AND SOLVENT CLEANING (HOLD POINT). When foreign matter has

accumulated on a previously applied coat, washing shall be performed prior to the application of any

subsequent coating products.

Washing shall involve the use of chlorine free potable water at a minimum of 1,000 psi and less than 5,000

psi pressure, in accordance with low pressure water cleaning of SSPC-SP 12. Paint spray equipment shall

not be used to perform the water cleaning. The cleaning shall be performed in such a manner as to remove

dust, dirt, chalk, insect and animal nests, bird droppings, and other foreign matter. The water does not

need to be collected unless it contacts existing lead containing coatings.

If detergents or additives are added to the water, the detergents or additives shall be included in the

submittals and not used until accepted by the Engineer. When detergents or additives are used, the surface

shall be rinsed with chlorine free potable water before the detergent water dries.

513

513.21REPAIR OF DAMAGE AND AREAS CONCEALED BY CONTAINMENT. The Contractor

shall repair all damage to the newly installed coating system and areas concealed by the containment or

protective covering attachment points, at no cost to the Agency.

If the damage extends to the substrate and the original preparation involved abrasive blast cleaning, the

damaged areas shall be prepared to meet the requirements of SSPC-SP 15. If the original preparation was

other than blast cleaning or the damage does not extend to the substrate, the loose, fractured paint shall be

cleaned to meet the requirements of SSPC-SP 3.

The surrounding coating at each repair location shall be feathered for a minimum distance of 1-1/2 inches

to achieve a smooth transition between the prepared areas and the existing coating.

If the bare steel is exposed, all coats shall be applied to the prepared area. If only the intermediate and

finish coats are damaged, the intermediate and finish coats shall be applied. If only the finish coat is

damaged, the finish coat shall be applied.

All hold points and specifications are applicable to the repair of damaged areas and areas concealed by

containment.

513.22GREASE COATING. If required by the plans, a coat of grease rustproofing compound shall be

uniformly applied by brush or spray at an approximate rate of 20 square feet per gallon to the steel as

specified.

The grease coating shall be applied after all concrete form work has been removed, and after the final coat

of paint, including repairs, has fully cured. A fully cured condition has occurred when a thumbnail driven

into the coating surface does not leave an impression and when a thumb firmly pushed against the surface

and twisted does not disturb the coating.

Surfaces adjacent to areas being grease coated shall be protected against over-spray. Non-metallic and

stainless steel surfaces shall not be coated.

513.23SPECIAL INSTRUCTIONS

the bridge in a color contrasting to the color of the top coat. The letters shall be capitals, not less

than 2 inches and not more than 3 inches in height.

The stencil shall contain the phrase “PAINTED BY (Insert the name of the Contractor)” and shall

show the month and year in which the painting was completed, followed by the appropriate code

for the coating material applied, all stenciled on successive lines.

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Coding shall be as follows:

structure has been prepared in accordance with this specification.

This information shall be stenciled on the cover plate of a truss end post near the top of the railing,

or on the inside face of an outside beam or girder near one end of the bridge, or at some equally

visible surface near the end of the bridge, as designated by the Engineer.

The cost of all work outlined above for stenciling will be included in the cost of painting existing steel

and no extra compensation will be allowed.

513.24METHOD OF MEASUREMENT. The quantity of Field Painting Steel, Three Coat System at the

location specified to be measured for payment will be on a lump sum basis in the complete and accepted

work.

513.25BASIS OF PAYMENT. The accepted quantity of Field Painting Steel, Three Coat System will be

paid for at the Contract lump sum price. Payment will be full compensation for performing all work

specified and for furnishing all labor, tools, equipment, and incidentals to complete the work.

Partial payments will be made as follows:

have been met and accepted by the Agency and the Contractor is fully mobilized to begin work.

complete.

and all equipment and waste have been removed from the project site to the satisfaction of the

Engineer.

Payment will be made under:

Pay Item Pay Unit

30 Field Painting Steel, Three Coat System ..................................................Lump Sum

514

5-205SECTIO N 514 – WATE R REPELLENT , SILANE

514.0 1 DESCRIPTION . This work shall consist of furnishing and applying a penetrating -type protective sealer on concrete surfaces. 514.0 2 MATERIALS . Materials shall meet the requirements of the following subsections: Water Repell ent, Silane ................................ ................................ ............................. 726.10 514.0 3 PACKAGING , DELIVERY , AND STORAGE . The material shall be delivered to the project in the original, unopened manufacturer’s containers and stored in accordance with the manufacturer’s recommendations. 514.0 4 PREPARATIO N OF SURFACES . All surfaces on which the protective sealer is to be applied shall be clean and thoroughly dry to the satisfaction of the Engineer and in accordance with the manufacturer’s recommendations. Dirt, grease, curing compounds, asphalt, or other foreign materials shall be removed from the concrete surface before application of the sealer. 514.0 5 APPLICATION . The material shall be applied to the satisfaction of the Engineer and in accordance with the manufacturer’s recommendations. The minimum application rate for Type I silane water repellent shall be 125 square feet per gallon or per the manufacturer’s recommendations, whichever is greater. The minimum a pplication rate for Type II silane water repellent shall be 300 square feet per gallon or per the manufacturer’s recommendation, whichever is greater. In the absence of specific recommendations from the manufacturer, the protective sealer shall not be applied to new concrete surfaces that are less than 14 days old. The concrete surfaces shall be free from precipitation for 48 hours prior to application of the sealer. Application of the sealer shall be completed within 40 days of original concrete placement. 514.0 6 PROTECTION . After application of the sealer, the concrete surfaces shall be protected to the satisfaction of the Engineer and in accordance with the manufacturer’s recommendations.

514.07METHO D OF MEASUREMENT . The quantity of Water Repellent, Silane to be measured for

payment will be the number of gallons of solution applied in the complete and accepted work, measured to the nearest gallon.