708.01 708-1 SECTION 708 PAINTS
708.01 General. This specification covers ready -mixed paints and coatings. Paints and coatings
shall be manufactured eight weeks or less before delivery to the project. Each paint container shall be labeled with the name and address of the manufacturer, trade name or trademark, type of paint, number of gallons, batch number, and date of manufacture. Paints shall be free of foreign material that is capable of clogging screens, valves, pumps, and other parts of the application equipment . Paint shall not contain the following:
1.Benzene.
2.Chlorinated solvents.
3.Ethylene glycol ethers.
4.Ethylene glycol acetates.
5.Lead.
6.Mercury.
7.Chromium.
8.Cadmium.
9.Petroleum products. The Contractor shall obtain certification in writing from the manufacturer showing that the product is free of the materials described above and that it meets or exceeds the requirements of 29 CFR 1910.1200. Paints shall not form a surface skin within 48 hours in three -quarter filled, tightly closed containers. Paint and coating pigments shall be lead free, and shall not thicken, become granular , or curdle in their containers. Volatile Organic Compound (VOC) levels for paints and coatings shall comply with the most current EPA regulations. All product compositional proportions are specified by weight. Material Safety Data Sheets and manufacturer’s recommended application instruction sheets representing each paint and coating shall be submitted to the Engineer for the project records before use.
708.02 List of Paints.
PAINTS SPECIFICATION Structural Steel Bridge Paint Subsection 708.03 White Wood Primer TT-P-25 Outside White Paint TT-P-102, Class A Exterior Black Paint TT-P-61 Black or White Baking Enamel TT-E-489, Class B Federal Yellow Enamel TT-E-489, Class A Aluminum Paint Subsection 708.04 Pavement Marking Paint Subsection 708.05 708.03 708-2
708.03 Structural Steel Bridge Paint. All structural steel shall be painted using an Inorganic
Zinc-Rich Polyurethane System. The primer shall be an approved inorganic zinc- rich primer conforming to the requirements of Table 1 of the STEEL STRUCTURES PAINTING COUNCIL SPECIFICATION NO. 20 (SSPC -PAINT 20). The vehicle of this primer shall be SSPC -Paint 20, Type 1 -C. The primer shall be applied according to the manufacturer's recommendations with a minimum dry film thickness of three mils. The manufacturer shall certify in writing to the Engineer that the SSPC -SP 6 steel cleaning is compatible with the primer used. The topcoat shall be an approved high -build polyurethane enamel with a minimum dry film thickness of three mils. To prevent bubbling, a mist coat shall be applied before application of the topcoat .
708.04 Aluminum Paint. The paint shall be supplied ready -mixed in the proportion of
(ASTM D 962, Type II, Class B) 2 pounds of aluminum paste per 1 gallon of mixing varnish (see subsection 708.06 (c)). Aluminum paint shall dry to touch in 1/2 to 4 hours and dry hard in 18 hours, maximum. Material will be inspected for leafing on a vertical primed steel surface at a spreading rate of 400 square feet per gallon.
708.05 Pavement Marking Materials. All pavement -marking materials shall be selected
from the Department ’s Approved Products List (APL). Before start of work, a Certificate of Compliance (COC) for all pavement marking materials shall be submitted per subsection 106.12.
a.Color. The pavement marking paint, without drop -on beads, shall meet the following requirements: White – Federal Standard N o. 595B-17925. The Yellowness Index (YI) of white shall not exceed 8.0 per ASTM E313 initially. The color after drying shall be a flat white , free from tint, and shall provide the maximum amount of opacity and visibility under both daylight and artificial light. Yellow – Materials for pavement markings shall meet the initial daytime chromaticity that falls within the box created by the following corner points: Table 708-1 INITIAL DAYTIME CHROMATICITY COORDINATES (CORNER POINTS) 1 2 3 4 x 0.530 0.510 0.455 0.472 y 0.456 0.485 0.444 0.400
b.Low Temperature Acrylic Waterborne Paint. Low temperature acrylic waterborne paint binder (nonvolatile portion of vehicle) shall be 100 percent FASTRACK XSR acrylic polymer, by weight, as determined by infrared analysis or other chemical analysis available to the Department . 708.05 708-3 The paint shall meet the requirements of Table 708 -2.
c.High Build Acrylic Waterborne Paint. High build acrylic waterborne paint binder (nonvolatile portion of vehicle) shall be 100 percent FASTRACK HD 21A acrylic cross- linking polymer, by weight, as determined by infrared analysis or other chemical analysis available to the Department. The paint shall meet the requirements of Table 708 -3.
d.Performance Requirements. The Low Temperature Acrylic Waterborne Paint and High Build Acrylic Waterborne paint shall be water resistant and shall show no softening or blistering. Table 708 -2 LOW TEMPERATURE ACRYLIC WATERBORNE PAINT Property White Yellow Test Method Nonvolatile portion of vehicle (white and yellow), % 41.0 (min.) 41.0 (min.) ASTM D2205 Pigment Composition Percent by weight ♦ 58-62 58-62 ASTM D4451 ASTM D3723 Paint Titanium Dioxide Content, lb/gal 1.0 (min.) ASTM D5381 Properties of the Finished Paint Total Non -volatiles, (solids) % by weight 75.0 (min.) 75.0 (min.) FTMS 141C - Method 4053.1, ASTM D2369, or ASTM D4758 Density, lb/gal 13.3- 13.9 13.1- 14.0 ASTM D2205 Consistency (Viscosity) White and Yellow, Krebs -Stormer Units 75-85 75-85 ASTM D562 Freeze Thaw Stability Shall complete 5 or more test cycles successfully ASTM D2243 Fineness of Grind, Cleanliness Rating B, minimum 3 3 ASTM D1210 Scrub Resistance 800 800 ASTM D2486 Directional Reflectance: [15 mil Wet Film] 88 (min.) 50 (min.) ASTM E1347 Dry Opacity (Contrast Ratio): [15 mil Wet Film] 0.98 (min.) 0.98 (min.) ASTM D2805 Table 708 -2 Notes: ♦Percent by weight shall include percent of organic yellow pigment. 708.06 708-4 Table 708 -3 HIGH BUILD ACRYLIC WATERBORNE PAINT Property White Yellow Test Method Nonvolatile portion of vehicle (white and yellow), % 43.0 (min.) 43.0 (min.) ASTM D2205 Pigment Composition Percent by weight ♦ 60-62 60-62 ASTM D4451 ASTM D3723 Paint Titanium Dioxide Content, lb/gal 1.0 (min.) ASTM D5381 Properties of the Finished Paint Total Non -volatiles, (solids) % by weight 77.0 (min.) 77.0 (min.) FTMS 141C - Method 4053.1, ASTM D2369, or ASTM D4758 Density, lb/gal 14.0- 14.6 13.7- 14.3 ASTM D2205 Consistency (Viscosity) White and Yellow, Krebs -Stormer Units 85-95 85-95 ASTM D562 Freeze Thaw Stability Shall complete 5 or more test cycles successfully ASTM D2243 Fineness of Grind, Cleanliness Rating B, minimum 3 3 ASTM D1210 Scrub Resistance 800 800 ASTM D2486 Directional Reflectance: [15 mil Wet Film] 88 (min.) 50 (min.) ASTM E1347 Dry Opacity (Contrast Ratio): [15 mil Wet Film] 0.98 (min.) 0.98 (min.) ASTM D2805 Table 708 -3 Notes: ♦Percent by weight shall include percent of organic yellow pigment.
708.06 Materials - Specifications
a.Paint Pigment. Chrominum Oxide, (Green) ASTM D263 Magnesium Silicate ASTM D605 Titanium Dioxide ASTM D 476, Class IV Red Iron Oxide ASTM D3721 Black Iron Oxide ASTM D769 Yellow Iron Oxide ASTM D768 708.07 708-5 (b) Organo -montmorillonite. Organo -montmorillonite shall be an organic ammonium compound of montmorillonite with a high gelling efficiency in a wide range of organic liquids. It shall be a fine, creamy, white powder with maximum water content of 3.0 percent and a maximum of 5.0 per cent retained on the 75 μ m (No. 200) sieve. Organo- montmorillonite shall be prewetted with methanol or ethanol as recommended by the manufacturer.
c.Varnish for Aluminum Paint. MATERIAL SPECIFICATION Resin - 100% Phenol Formaldehyde MIL-R-15189A Oil-Tung ASTM D12 Mineral Spirits ASTM D235 Driers - Cobalt and/or manganese ASTM D600 PROPERTIES OF VARNISH Viscosity (G -H) A-C Oil Length 275 liters per 100 kilograms of resin (33 gal) Nonvolatile 55% min. Proportion of Thinners 90% Mineral Spirits, 10% Xylene Color (Hellige) 12 max. Zinc Reactivity None Kauri Reduction 140% min. Rosin and Rosin Derivatives None Appearance Clear and Transparent Drying Time: Set to Touch 1 to 3 hr. Dry Hard 18 hr max. Alkali Resistance. No visible attack to film dried 72 hours after 8 hours in 5% sodium hydroxide solution at 21 °C (70 °F).
708.07 Pavement Primers. The type and application rate of epoxy resin primer shall be as
recommended by the thermoplastic or preformed plastic pavement -marking manufacturer. A primer application rate of zero will not be accepted, except for thermoplastic marking and inlaid preformed plastic pavement marking placed on new asphalt surfaces as recommended by the manufacturer and approved in writing by the Engineer . However, if the Engineer determines that a new asphalt surface has become soiled, before placement of the pavement markings, pavement primer will be required and shall be applied as approved. The epoxy resin primer material may be accepted at the job site based on a manufacturer's certification, or a sample may be sent to the Laboratory for testing, in which case three weeks shall be allowed between sampling and intended use.
708.08 Structural Concrete Coating . The Coating shall be a one -component, high -build,
non-vapor barrier, 100 percent acrylic emulsion in water, and a texturing agent. 708.09 708-6 Table 708-4 MINIMUM PHYSICAL PROPERTIES Solids by Weight 48 percent (Without texturing agent) Solids by Volume 36 percent (Without texturing agent) Weight per gallon 8.3 lb/gal (Without texturing agent) Texturing Agent 3.2 to 3.8 lb/gal), No. 40 to 60 Ottawa sand or equivalent All coating material shall be delivered to the project site in sealed containers bearing the manufacturer’s original labels. A material safety data sheet (MSDS) prepared per Federal Standard 313 and a complete set of manufacturer's mixing and application instructions shall be submitted to the Engineer before the Contractor begins applying the coating.
708.09 Inspection and Testing. The manufacturer shall notify the Engineer well in advance
of actual paint manufacture in order to arrange for sampling and testing of raw materials and inspection of paint production. Test methods shall be according to ASTM or, if not covered, Federal Test Method Standard No. 141. All paint shall have been approved before delivery. 709.01 709-1 SECTION 709 REINFORCING STEEL AND WIRE ROPE
709.01 Reinforcing Steel. Reinforcing steel shall conform to the requirements of the following
specifications: Deformed and Plain Billet -Steel Bars for Concrete Reinforcement ASTM A615 Axle-steel Deformed and Plain Bars for Concrete Reinforcement ASTM A996 Low-Alloy Steel Deformed Bars for Concrete Reinforcement [to be Welded] ASTM A706 Fabricated Deformed Steel Bar Mats for Concrete Reinforcement ASTM A184 Steel Welded Wire Fabric, Plain for Concrete Reinforcement AASHTO M55 Steel Welded Wire Fabric, Deformed for Concrete Reinforcement AASHTO M 221 Epoxy Coated Reinforcing Bars ASTM A775 Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement ASTM A767 Deformed and Plain Stainless -steel Bars for Concrete Reinforcement ASTM A955 Deformed and Plain, Low -Carbon, Chromium, Steel Bars for Concrete Reinforcement ASTM A1035 Continuous Hot -Dip Galvanized Steel Bars for Concrete Reinforcement ASTM A1094 Unless otherwise design ated, bars conforming to ASTM A615 and ASTM A 996 shall be furnished in Grade 60. In ASTM A 184, bar material conforming to ASTM A616 will not be permitted. In ASTM A955, bar material shall be furnished in Grade 75 unless otherwise designated. In ASTM A1035, bar material of Type CL will not be permitted unless designated in the plans or otherwise approved by the Engineer.
709.02 Wire Rope. The wire rope shall conform to the requirements of AASHTO M 30 for the
specified diameter and strength class.
709.03 Dowel Bars and Tie Bars . Tie bars for longitudinal and transverse joints shall conform
to AASHTO A 775 and shall be grade 40, epoxy -coated, and deformed. Bar size shall be as designated on Standard Plan M -412-1. Dowel bars for transverse joints shall conform to AASHTO M 25 4 for the coating and to ASTM A615, grade 60 for the core material and shall be epoxy -coated, smooth, and lightly greased, precoated with wax or asphalt emulsion, or sprayed with an approved material for their full length. Bar size shall be as designated on the Standard Plan M -412-1.
Source: Colorado Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 861–866 of 943.