Chapter 5.95
PAINTING
Sections:
5.95.040 Air quality standards.
5.95.050 Epoxy filler and surfacer compound.
5.95.070 Preparation of surfaces.
5.95.010 Description.
Painting shall include the furnishing of all paint, labor, equipment, appliances, and material and the performing of all operations in connection with the preparation of surfaces, application of all paint or other materials and the manufacture of paints, paint material and miscellaneous materials incidental thereto. Surfaces to be painted shall receive treatment and the number of coats prescribed herein, or as detailed on the plans or in the special provisions. Paint colors shall be those specified and approved by the District. [Ord. 2014-2 (Att. § 19-01).]
5.95.020 Standards.
(1) Painting Standards. All painting shall be done in accordance with Section 59 of the State Standard Specifications, State of California, Department of Transportation, latest edition.
(2) Products. All materials, supplies and articles furnished shall, wherever practicable, be the standard product of a recognized, reputable manufacturer. The standard products of manufacturers other than those specified will be accepted when it is proved to the satisfaction of the District that all paint materials comply fully with the specifications.
(3) Metal Surfaces. Metal surfaces shall be prepared and painting shall be done in accordance with Steel Structures Painting Council (SSPC) Specifications. [Ord. 2014-2 (Att. § 19-02).]
5.95.030 Safety.
Paint materials shall be stored in assigned area, and storage area shall be kept clean and fire safe. Used rags, thinner and buckets shall be disposed of daily.
The contractor is advised that application of coal tar epoxy and other paint materials may be hazardous. The contractor shall take all necessary precautions to ensure the safety of workers and property.
The contractor shall maintain a copy of the Material Safety Data Sheets (MSDS) for all coating materials on the job site at all times. [Ord. 2014-2 (Att. § 19-03).]
5.95.040 Air quality standards.
All work, materials, procedures and practices under this chapter shall conform with requirements of the Bay Area Air Quality Management District. [Ord. 2014-2 (Att. § 19-04).]
5.95.050 Epoxy filler and surfacer compound.
Epoxy filler and surfacer compound for concrete surfaces shall be nonshrink, trowel grade filler and surfacer with high bond strength and high resistance to abrasion, impact, wet conditions, corrosive fumes, solvents and chemical contact. Filler and surfacer compound shall be Tnemec 63-1500 epoxy putty, Wil-Cor No. 900 trowellable epoxy putty, or equal 100 percent solids epoxy patching material.
One coat of Tnemec Series 69, Koppers Hi Guard Epoxy, or equal shall be sprayed on the concrete for the purpose of highlighting the large holes and defects in the concrete surfaces.
The epoxy filler and surfacer compound shall be troweled into the big holes and defects in the concrete surface. The troweled thickness over damaged concrete surfaces shall be one thirty-second inch to one-sixteenth inch. [Ord. 2014-2 (Att. § 19-05).]
5.95.060 Coating systems.
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Coating System Designation |
Paint Specification |
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A |
Surface Preparation: |
Steel – SSPC-SP-10 (near white metal blast cleaning) |
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Concrete – Brush-off blast |
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System: |
High-Build Coal Tar Epoxy |
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Paint Types: |
Tnemec Series 46H-413 High-Build Tnemec Tar |
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or |
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Two coats Koppers 300M Coal Tar Epoxy |
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Primer: |
Self priming |
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Coats: |
Steel – Two coats |
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Total 16 – 20 mils dry film thickness |
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Concrete – Two coats |
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Base coat 4 – 6 mils |
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Top coat 12 – 14 mils |
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Total 16 – 20 mils dry film thickness |
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B |
Surface Preparation: |
Steel – SSPC-SP-10 (near white metal blast cleaning) |
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Concrete – Brush-off blast |
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System: |
High-Build Epoxoline |
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Paint Types: |
Tnemec Series 69 |
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Koppers Hi-Gard Epoxy |
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Primer: |
Steel: Self priming |
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Concrete: Thin paint to provide 2 mils dry film thickness, apply epoxy filler and surfacer compound (see SD5MCC 5.95.050) |
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Coats: |
Two coats |
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Each coat 5 – 7 mils dry film thickness |
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Total 10 – 14 mils dry film thickness |
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C |
Surface Preparation: |
SSPC-SP-6 (commercial blast cleaning) |
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System: |
High-Build Epoxoline base coat |
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Alkyd Polyurethane Enamel top coat |
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Paint Types: |
Tnemec Series 69 base coat |
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Tnemec Series 75 top coat |
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or |
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Koppers Hi-Gard Epoxy base coat |
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Equivalent Koppers top coat |
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Primer: |
Tnemec 606 base coat |
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Compatible Koppers primer |
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Coats: |
Two coats |
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Base coat 4 mils |
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Top coat 4 mils |
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Total 8 mils dry film thickness |
[Ord. 2014-2 (Att. § 19-06).]
5.95.070 Preparation of surfaces.
All surfaces to be painted shall be thoroughly cleaned before applying paint or surface treatments, including sealing of all surface markings that may bleed through. Clean clothes and clean fluids shall be used in solvent cleaning to avoid leaving a thin film of greasy residue. Cleaning and painting shall be so programmed that dust or spray from the cleaning process will not fall on wet, newly painted surfaces. Hardware and similar accessories shall be removed or suitably masked during preparation and painting operations, or shall otherwise be satisfactorily protected. In all cases the recommendations of the paint manufacturer shall be rigidly followed in the preparation of surfaces prior to painting.
After the contractor has completed the job of preparing all surfaces to be painted, the surfaces shall be inspected and approved by the District prior to the application of any paint.
(1) Metal Surfaces. All metal surfaces to be painted shall be prepared by sandblasting pursuant to the requirements of SD5MCC 5.95.060 and shall be completely clean and free of all oil, grease, dirt, rust, loose mill scale, old weathered paint, and other foreign substances. The removal of oil and grease shall, in general, be accomplished by sandblasting. Minor amounts of grease and oil contaminants will be tolerated on the surface, prior to sandblasting; provided, that the abrasive is not reclaimed and reused. All galvanized metal shall be thoroughly washed with neutralizing solution prior to painting.
(2) Concrete Surfaces. All concrete surfaces to be painted shall be prepared by sandblasting pursuant to the requirements of SD5MCC 5.95.060 and shall be completely clean and free of all oil, grease, dirt, etc., and shall be completely wire brushed to remove any loose concrete or paint and all cracks shall be patched to the satisfaction of the District. Surfaces to be painted with coal tar epoxy shall be sandblasted to remove the smooth surface mortar in accordance with the recommendations of the paint manufacturer. [Ord. 2014-2 (Att. § 19-07).]
5.95.080 Paint applications.
(1) Workmanship. All work shall be done in strict accordance with the instructions of the paint manufacturer and in a workmanlike manner so that the finished surfaces will be free from runs, drops, ridges, waves, laps and unnecessary brush marks. All coats shall be applied in such manner as to produce an even film of uniform thickness completely coating all corners and crevices. All painting shall be done by thoroughly experienced workmen. Care shall be exercised during spraying to hold the nozzle sufficiently close to the surfaces being painted to avoid excessive evaporation of the volatile constituents and loss of materials into the air, or the bridging over of crevices and corners. Spray equipment shall be equipped with mechanical agitators, pressure gauges, and pressure regulators. Nozzles shall be of proper size. Floors, roofs, and other adjacent areas and installations shall be satisfactorily protected by drop cloths or other precautionary measures. All overspray shall be removed by approved method or the affected surface repainted.
The District shall be notified when each coat has been applied and is ready for inspection. Until each coat has been inspected and approved by the District, no succeeding coats shall be applied.
(2) Atmospheric Conditions. Except as specified or required for certain water-thinned paints, paints shall be applied only to surfaces that are thoroughly dry and only under such combination of humidity and temperatures of the atmosphere and surfaces to be painted as will cause evaporation rather than condensation. In no case shall any paint at all be applied during rainy, misty weather or to surfaces upon which there is frost or moisture condensation without suitable protection as approved by the District. Where painting is permitted during damp weather, or when the temperature is at or below 50 degrees Fahrenheit, the surfaces shall be heated to prevent moisture condensation thereon. Bare metal surfaces, except those which may be warped by heat, may be dehydrated by flame-heating devices immediately prior to paint application. While any painting is being done, the temperature of the surfaces to be painted and of atmosphere in contact therewith, shall be maintained at or above 50 degrees Fahrenheit, except where paints are being used which dry solely by evaporation, in which case the temperature of the air and surface may be 35 degrees Fahrenheit or as approved by the District. All paint when applied shall be approximately the same temperature as that of the surface on which it is applied.
(3) Protection of Painted Surfaces. Where protection is provided for paint surfaces, such protection shall be preserved in place until the paint film has properly dried, and the removal of the protection is authorized. Items which have been painted shall not be handled, worked on or otherwise disturbed until the paint coat is completely dry and hard. After delivery at the site, all shop coated metalwork shall be repainted or retouched from time to time with specified paint whenever, in the opinion of the District, it becomes necessary to maintain the integrity of the film. [Ord. 2014-2 (Att. § 19-08).]
5.95.090 Painting schedule.
Various items shall be painted in accordance with the painting schedule given below. Coating systems refer to those listed in SD5MCC 5.95.060.
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Surface Location |
Coating System Designation |
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All concrete and metalwork submerged or exposed to moisture or sewage, such as wet wells, weirs, gates, pipework (not manholes), etc. |
A or B |
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All exposed interior and exterior concrete surfaces, such as pump station and structure walls, ceilings, etc. (not floors). |
B |
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All concrete and metalwork submerged or exposed to moisture or sewage, such as wet wells, weirs, gates, pipework (not manholes), etc. |
C |
[Ord. 2014-2 (Att. § 19-09).]
5.95.100 Cleanup.
Upon completion of his work, the painting contractor shall remove his surplus materials. All paint spills shall be removed and the entire premises shall be free from rubbish, debris, etc., caused by his work. He shall present the work clean and free from blemish so that it is acceptable in every way. All glass and equipment name tags shall be thoroughly cleaned of paint spots and polished, and the job made ready for use. [Ord. 2014-2 (Att. § 19-10).]