910.01 966 SECTION 910 – PAINT
910.01 General Requirements ................................ ................................ .. 966
910.02 Quick Dry Traffic Marking Paint (White and Yellow) ................ 966
910.03 Structural Steel Coatings ................................ .............................. 970
910.01 General Requirements
Before having any paint manufactured under these Specifications, contact the Department for a sampling, testing , and inspection procedure. Proportion a ll paint furnished under these Specifications in accordance with the characteristics specified herein. Perform c ompounding using ingredients or component materials that have been found to conform with the appropriate detailed Specifications as set forth b elow by reference or otherwise. Provide p aint that will not compact on settling and will readily return to a smooth, uniform consistency for brushing or spraying when stirred vigorously with suitable paddles or when boxed from container to container. The Contractor may use 55 -gallon drums, equipped with efficient mechanical stirring devices, to deliver shop coat paint to fabricating shops that are equipped to handle them. With the Department’s written authorization, the Contractor may also use 55 -gallon drums equipped with stirring devices to deliver paints to projects requiring large quantities. In all other cases, deliver lots of 5 gallons or more in 5 -gallon circular type metal pails constructed of 26 gauge or heavier metal. Equip each container with a full-top removable and replaceable lid and with a bail of sufficient strength to support the pail when completely filled with the specified paint. Label each container with the name and address of the manufacturer, the kind and color of paint, formula, n et content of container, date of manufacture , and lot number. Have paint that has been stored for longer than 6 months re-inspected and approved prior to use.
910.02 Quick Dry Traffic Marking Paint (White and Yellow)
The following requirements apply to quick dry white and yellow traffic paint, also referred to as pigmented binder, for use in marking traffic lanes or barrier lines on bituminous and concrete highways. 910.02 967 A. General Requirements Provide pigmented binder formula ted to allow for application by spray equipment when heated to 130 °F maximum and applied on bituminous or Portland cement concrete pavements.
B.Drop-on Glass Beads Use glass beads conforming to AASHTO M 247 , Type 1.
1.General. For pavement markings, use beads that are clear, transparent, colorless glass, smooth and spherically shaped, free of milkiness, pits, or excessive air bubbles , and that conform to the requirements specified herein. Glass beads shall not contain more than 200 parts per million of le ad or 200 parts per million of arsenic. Certify and ensure that all glass beads meet all Federal requirements . Provide certified test reports demonstrating that all glass beads contain no more than 200 parts per million of arsenic or lead as determined by a certified independent (third party) laboratory, in accordance with Environmental Protection Agency testing methods 3052, 6010B, or 6010C. Silica content of the glass beads shall be no less than 60%.
2.Color and Clarity. Beads shall be colorless, clear , and free from carbon residues.
3.Roundness. Ensure m inimum true spheres overall are 80% when tested in accordance with ASTM D1155; for larger beads use visual inspection.
4.Index of Refraction . Minimum of 1.50, when tested by the liquid emersion method at 77 °F.
5.Air Inclusions. Maximum of 3% overall .
C.Paint
1.Characteristic Requirements. Provide paint meeting the following requirements: 910.02 968 a. Pigment Content . 58% to 65% by weight. Pigment for white paint shall contain 0.99 pounds per gallon of 94% titanium dioxide. Pigment for yellow paint shall be lead free and contain 0.22 pounds per gallon minimum of 94% titanium dioxide.
b.Total Non -Volatile. 76% by weight , minimum.
c.Vehicle Non -Volatile. 41% by weight , minimum . Vehicle shall be Rohm and Haas E -2706, DOW DT211NA , or an approved equal.
d.Minimum Weight . 13.3 pounds per gallon .
e.Paint Viscosity . 78 to 95 Kreb units when tested at 77 plus or minus 2.0 °F in accordance with ASTM D562.
f.Drying Time
1.Field: The paint shall dry to a no -tracking condition in 3 minutes when applied at 15 plus or minus 1 mil wet film thickness with a bead application rate of 6 pound per gallon of glass spheres per gallon of binder, when the pavement temperature is between 40 and 120 °F and the relative humidity is not exceeding 80%. Apply the pigmented binder with specialized equipment ensuring the binder will have a temperature of 100 to 130 °F at the spray gun. Determine t he no- tracking condition by passing over the line as applied above in a simulated passin g maneuver with a passenger car travelling 35 miles per hour . Consider a line showing no visual deposition when viewed from a distance of 50 feet as conforming to this drying requirement.
2.Lab: The pigmented binder without glass spheres shall dry to n o-pick-up condition in 10 minutes or less when tested in accordance with ASTM D711.
g.Volatile Organic C ompounds (VOCs). Meet the current EPA VOC requirements or 150 grams per liter, whichever is lower.
h.Paint pH . 9.6, minimum . 910.02 969 2. Qualitative Requirements. Provide finished paint meet ing the following quality requirements:
a.Condition in Container . The paint received shall show no livering, skinning, mold growth, corrosion of the container, or hard settling of the pigment. Stirring by hand shal l readily disperse any s ettling, with no persistent foaming.
b.Color.
1.White: A fter drying , the color shall be flat white, free from tint, furnishing good opacity and visibility under both daylight and artificial light.
2.Yellow: Color shall close ly match chip 33538 of Federal Standard 595B.
c.Flexibility . No cracking or flaking when tested on a 1/2-inch mandrel in accordance with Federal Specification TT -P-1952B.
d.Dry Opacity (Minimum Contrast Ratio). 0.95 when drawn with a 0.005 Bird Applicator.
e.Daylight Directional Reflectance . Not less than 85% for white paint and not less than 50% for yellow (relative to manganese oxide) when measured in accordance with Federal Test Method No. 1416.
f.Bleeding Ratio. 0.97, minimum, when tested in accordance with Federal Specification TT -P-1952B.
g.Scrub Resistance . 300 cycles when tested in accordance with ASTM D2484.
h.Freeze-Thaw Stability . No change in consistency greater than 10% when tested in accordance with Federal Specification TT-P-1952B.
i.Storage Stability . When stored at 77 plus or minus 4.0 °F in a 3/4-filled can for a period of 30 days, the paint shall be in a homogeneous state with no skinning, curdling, hard settling , or caking that cannot be readily remixed. 910.03 970 D. Inspection, Testing, Packaging, and Marking After manufacture, send, to the Division of Materials and Tests , a 0.5-pint sample of paint along with certified laboratory analysis for each batch. For each batch or lot of glass beads shipped for use on Tennessee projects, send, to the Division of Materials and Tests , a 1-quart sample and a manufacturer’s certification that the glass beads meet the requirements of A ASHTO M 247 for the type beads. With each shipment of paint and beads , include a detailed analysis for that particular batch and ce rtification that all ingredients meet the requirements set forth in this Specification. The Department reserves the right to perform in -plant sampling of ingredients and finished product during manufacturing operations and to sample the packaged product w hen it is received by the Department. The Department may withhold a cceptance of the product until it completes its analysis of the samples. Ship all paint in new containers that can be properly sealed. Plainly mark or label a ll containers to show the fo llowing information: name and address of manufacturer, kind and color of paint , formula, net content of container , date of manufacture (month and year) , and batch number.
910.03 Structural Steel Coatings
Structural steel coating systems for new and existing structures shall be listed on the Department’s QPL for Structural Steel Coatings. Do not apply any paint, either in the shop or in the field, until the manufacturer has submitted to the Engineer a certification stating that the material supplied has the same formulation as the prequalified material. The Engineer reserves the right to sample and test the materials supplied. 911.01 971 SECTION 9 11 – LUMBER, TIMBERS, AND TIMBER PILES
911.01 Lumber and Timbers ................................ ................................ .... 971
911.02 Treated Lumber and Timbers ................................ ....................... 972
911.03 Timber Piles ................................ ................................ ................. 972
911.01 Lumber and Timbers
A.General Refer to AASHTO M 168 for grading and terminology. This Section primarily addresses bridge and miscellaneous roadway materials.
B.Species of Wood Use Southern Yellow Pine in accordance with Southern Pine Inspection Bureau (SPIB) Specifications or as otherwise shown on the Plans.
C.Grades of Lumber and Timber Provide lumber and timbers for permanent use in structures that is grade marked or hammer stamped by a recognized acceptance agency that conforms to the following :
1.Yard Lumber . Provide yard l umber with a grade of C Finish, when a choice quality grade for finish purposes and appearance is a requirement , especially when painted.
a.No. 1. Provide #1 Grade lumber and timbers for general construction and utility purposes where strength is a consideration.
b.No. 2. Provide #2 Grade lumber and timbers for general construction and utility purposes where strength is not a consideration .
2.Structural or Stress Rated Lumber and Timber. As specified or otherwise noted in the plans, provide lumber and timbers of a
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 975–979 of 1,072.