96E03/29/06

S718-96E.doc

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  Use with U-channel steel posts.

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**Section 718. - TRAFFIC SIGNING AND MARKING MATERIAL**

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  When steel panels are specified, include the following:

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**718.04 Steel Panels.** [Delete the text in the first paragraph and
substitute the following:]{.underline}

Furnish 0.079 inch continuous coat galvanized sheet steel blanks
conforming to ASTM A 653. Mill phosphatize the zinc coating (designation
G 90) to a thickness of 0.0035 ± 0.00175 ounces per square foot of
surface area.

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  When galvanized steel signposts are required or permitted, include the
  following:

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**718.08 Signposts.**

**(b) Steel posts.** [Delete the text and substitute the
following:]{.underline}

> **(1) U-channel steel posts.** Furnish flanged, channel, galvanized
> steel posts conforming to ASTM A 499, grade 60, and the following:
>
> *(a) Dimensions of U cross section*
>
> *(1)* Width of opened end of U including flanges 3-3½ inch
>
> *(2)* Width of closed end of U 1-1½ inch
>
> *(3)* Depth of U 1-2 inch
>
> *(4)* Thickness of steel 0.10-0.20 inch
>
> *(b) Punching.* Starting 1 inch from the top and extending the full
> length of the post, drill or punch 0.375 inch holes on 1 inch centers
> along the centerline of the bottom of the U. Remove all burrs and
> sharp edges.
>
> *(c) Galvanizing after punching* AASHTO M 111
>
> **(2) Square tubular steel posts.** Furnish square tubular galvanized
> steel posts conforming to ASTM A 1011, grade 55, or ASTM A 715, grade
> 60, and the following:
>
> *(a) Dimensions of cross section*
>
> *(1)* Outside dimensions 1¾ by 1¾ inch
>
> or 2 by 2 inch
>
> *(2)* Wall thickness 0.08 inch
>
> *(3)* Mass 5.0-6.0 lb/yd
>
> *(b) Punching.* Starting 1 inch from the top and extending the full
> length of the post, drill or punch 0.43 inch holes on 1 inch centers
> along the centerline of all four sides, in true alignment and opposite
> each other directly and diagonally. Remove all burrs and sharp edges.
>
> *(c) Galvanizing after punching* ASTM A 653, Z275
>
> (inside and outside of post)

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  When corrosion resistant steel signposts are required or permitted,
  include the following:

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**(d) Corrosion resistant steel posts.** Furnish post and breakaway
plates conforming to ASTM A 588 or ASTM A 242.

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  When type 2 delineators or object markers are required or permitted,
  include the following:

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**718.12 Delineator and Object Marker Retroreflectors.**

**(b) Type 2 (retroreflective sheeting).** [Delete the first sentence
and substitute the following:]{.underline}

Furnish a fungus resistant type III, V, VII, VIII, or IX retroreflective
sheeting with a class 1 or 2 adhesive backing conforming to ASTM D 4956.

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  When conventional traffic paint is specified, include the following:

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**718.13 Conventional Traffic Paint.** [Delete the text and substitute
the following:]{.underline}

Conform to AASHTO M 248.

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  When waterborne traffic paint is specified, include the following:

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**718.14 Waterborne Traffic Paint.** [Delete the text and substitute the
following:]{.underline}

Furnish an acrylic water based ready-mixed paint for use on asphalt and
hydraulic cement concrete pavements conforming to the following:

**(a) Composition.** Furnish a paint composed of resin solids of 100
percent acrylic polymer with the exact formulation determined by the
manufacturer. Conform to the following:

> **(1)** Pigment, % by mass, ASTM D 3723 45% to 55%
>
> **(2)** Lead, chromium, cadmium, or barium 0%
>
> ASTM D 3335 & D 3718
>
> **(3)** Volatile organic compounds, ASTM D 3960 1.2 lb/gal max.
>
> **(4)** Mass of paint, ASTM D 1475 12 lb/gal min.

**(b) Viscosity.** ASTM D 562 75-90 Krebs units

**(c) Drying time:**

> **(1)** Dry to no pickup, ASTM D 711 10 minutes max.
>
> **(2)** Drying to no track, 6 lb/gal type 1 waterproofed glass 90
> seconds max.
>
> beads, 15 ± 1 mil. Wet film thickness at 130ºF

**(d) Flexibility.** ASTM D 522, using the 0.025 inch No cracking or
flaking cylindrical mandrel

**(e) Dry opacity.** ASTM D 2805, contrast ratio 0.96 min.

at 35 yd^2^/gal spreading rate

**(f) Color.**

> **(1)** White, ASTM D 1729 Match FHWA standard
>
> highway white
>
> **(2)** Yellow, ASTM D 1729 Match FHWA standard
>
> highway yellow

**(g) Daylight reflectance.** (Without glass beads)

> **(1)** White, ASTM E 1347 84% relative to magnesium
>
> oxide standard
>
> **(2)** Yellow, ASTM E 1347 55% relative to magnesium
>
> oxide standard

**(h) Bleeding ratio.** ASTM D 969. 0.96 min.

> Determine reflective in accordance with ASTM D 1347 immediately after
> drying. Divide the average of 3 reflectance readings of the paint over
> the bleeding surface by the average of 3 readings over the
> non-bleeding surface to determine the bleeding ratio.

**(i) Scrub resistance.** ASTM D 2486 300 cycles min.

**(j) Freeze-thaw stability.** ASTM D 2243

> **(1)** Change in viscosity ± 5 Krebs units max.
>
> **(2)** Decrease in scrub resistance -10% max.

**(k) Storage stability.** During a 12 month storage period, conform to
the following:

> **(1)** No excessive setting, caking, or increase in viscosity
>
> **(2)** Readily stirred to a consistency for use in the striping
> equipment

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  When epoxy markings are specified, include the following:

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**718.15 Epoxy Markings.** [Delete the text and substitute the
following:]{.underline}

Furnish a 2-component, 100 percent solids type system for hot-spray
application conforming to the following:

**(a) Pigments.** Component A. Percent by mass.

> **(1)** White:
>
> *(a)* Titanium dioxide (TiO2),
>
> ASTM D 476, type II and type III 18% min.
>
> *(b)* Epoxy resin 75 to 82%
>
> **(2)** Yellow:
>
> *(a)* Chrome yellow (PbCrO4),
>
> ASTM D 126, type III 23% min.
>
> *(b)* Epoxy resin 70 to 77%
>
> **(3)** Non-Lead Yellow:
>
> *(a)* Titanium dioxide (TiO2),
>
> ASTM D 476, type II and type III 14%
>
> *(b)* Organic yellow 7 to 8%
>
> *(c)* Epoxy resin 75 to 79%

**(b) Epoxy content.** Component A. Mass per epoxy Manufacturer\'s
target

equivalent, ASTM D 1652 value ± 50

**(c) Amine value.** Component B, ASTM D 2074 Manufacturer\'s target

value ± 50

**(d) Toxicity.** Toxic or injurious fumes at application None

temperature

**(e) Color.** 15 mil film thickness specimen (cured)

> **(1)** White, ASTM D 1729 Match FHWA standard
>
> highway white
>
> **(2)** Yellow, ASTM D 1729 Match FHWA standard
>
> highway yellow

**(f) Directional reflectance.** (Without glass beads)

> **(1)** White, ASTM E 1347 84% relative to magnesium
>
> oxide standard
>
> **(2)** Yellow, ASTM E 1347 55% relative to magnesium
>
> oxide standard

**(g) Drying time.** 15 mil film thickness with beads.

> **(1)** Laboratory, at 72ºF, ASTM D 711 30 minutes max. to
>
> no pick-up condition
>
> **(2)** Field, at 77ºF, viewed from 50 feet 10 minutes max. to
>
> no-tracking condition

**(h) Abrasion resistance.** Wear index with a CS-17 wheel 82 max.

> under a 1000 g load for 1000 cycles, ASTM D 4060

**(i) Hardness.** Shore D hardness with 72 to 96-hour cure 75 to 100

> at 72ºF, ASTM D 2240

**(j) Storage.** When stored for up to 12 months, individual epoxy

> components shall not require mixing before use.

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  When polyester markings are specified, include the following:

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**718.16 Polyester Markings.** [Delete the text and substitute the
following:]{.underline}

Furnish a 2-component system conforming to the following:

**(a) Directional reflectance.** (Without glass beads)

> **(1)** White, ASTM E 1347 84% relative to magnesium
>
> oxide standard
>
> **(2)** Yellow, ASTM E 1347 55% relative to magnesium
>
> oxide standard

**(b) Color:**

> **(1)** White, ASTM D 1729 Match FHWA standard
>
> highway white
>
> **(2)** Yellow, ASTM D 1729 Match FHWA standard
>
> highway yellow

**(c) Viscosity.** Uncatalyzed polyester at 25ºF, ASTM D 562 70 to 90
Krebs units

**(d) Bleeding.** ASTM D 969 6 min.

**(e) Drying time in field.** Viewed from 50 feet 45 minutes max. to

no-tracking condition

**718.20 Raised Pavement Markers.** [Delete the text and substitute the
following:]{.underline}

**(a) Non-plowable, extended life, retroreflective, pavement markers.**
Conform to ASTM D 4280.

**(b) Plowable, retroreflective, pavement markers.** Conform to ASTM D
4383.