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Characteristics

Pigment, per cent by weight (Min.)
Volatiles, per cent by weight (Max.)
Non-volatile vehicle, wt. % (Min.)
Uncombined water, wt. % (Max.)
Coarse particles and skins, as residue
retained and standard 325 mesh
screen, % by wt. (Max.)

Viscosity, shearing rate 200 r.p.m.
Krebs Units (Min.)

Krebs Units (Max.)

Weight, per gallon, pound (Min.)
Fineness of grind, Hegman units
Dry for recoating, hours (Max.)
Rosin or rosin derivative (Max.)
Flash Point, (Min.) °F

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(2) Ingredients.—The ingredients shall meet the following re

quirements:

Titanium dioxide-ASTM D476, Type II, Class II.
Reinforcing pigments-Fed. Spec. TT-P-403.

Chrome Green-Fed. Spec. TT-P-345.

Tinting pigments-Fed. Spec. TT-E-489, Table I, paragraph E-3.
Alkyd resin-Fed. Spec. TT-R-266, Type I or II.

Mineral Spirits Fed. Spec. TT-T-291, Grade I.

Driers-Fed. Spec. TT-D-643.

(3) Tests for other qualities specified in SSPC Paint 104, shall conform to the appropriate Method contained in Federal Standard No. 141.

Section 709.-REINFORCING STEEL AND WIRE

ROPE

709.01 Reinforcing Steel. Reinforcing steel shall conform to the requirements of the following AASHTO specifications:

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Bar reinforcement for concrete structures, except No. 2 bars, shall be deformed in accordance with AASHTO M 42, M 31 and M 53 (ASTM A 616, A 615, A 617) for Nos. 3 through 11.

Dowel and tie bars shall conform to the requirements of AASHTO M 31 (ASTM A 615) or M 42 (ASTM A 616) except that rail steel shall not be used for tie bars that are to be bent and restraightened during construction. Tie bars shall be deformed bars. Dowel bars shall be plain round bars. They shall be free from burring or other deformation restricting slippage in the concrete. Before delivery to the site of the work, a minimum 1⁄2 the length of each dowel bar shall be painted with one coat of approved lead or tar paint.

The sleeves for dowel bars shall be metal of an approved design to cover 2 inches (50.8 mm), plus or minus 1⁄4 inch (6.35 mm), of the dowel, with a closed end, and with a suitable stop to hold the end of the sleeve at least 1 inch (25.4 mm) from the end of the dowel bar. Sleeves shall be of such design that they do not collapse during construction.

709.02 Wire Rope or Wire Cable. The wire rope or wire cable shall conform to the requirements of AASHTO M 30 for the specified diameter and strength class.

709.03 Prestressing Reinforcing Steel. Prestressing reinforcing steel shall be high-tensile wire conforming to AASHTO M 204 (ASTM A-421) high-tensile wire strand or rope conforming to AASHTO M 203 (ASTM A-416) or high-tensile alloy bars as follows:

High-tensile-strength alloy bars shall be cold stretched to a minimum of 130,000 p.s.i. (896 MPa). The resultant physical properties shall be as follows:

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Minimum elongation in 20 bar

diameters after rupture Diameters tolerance

4 percent.
+0.03" (0.762 mm),

-0.01" (0.254

mm)

If shown on the plans, type 270k strand shall be used, conforming to AASHTO M 203 (ASTM A 416) except as follows:

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All wire shall be free from injurious defects and shall have a workmanlike finish with smooth surface. Material which shows injurious defects during or prior to its installation in the work will be rejected.

400

(181.4)

3100

(1406)

26,350

525

(238.1)

4130

(1873)

35,100

Section 710.-FENCE AND GUARD RAIL

710.01 Barbed Wire. Galvanized barbed wire of the coating class specified, shall conform to the requirements of ASTM A 121. Aluminum coated barbed wire shall conform to the requirements of ASTM A 585, with Type I (Aluminum Coated) or Type II (Aluminum Alloy) barbs at the option of the manufacturer.

710.02 Woven Wire. Galvanized woven wire fence of the coating class specified shall conform to the requirements of ASTM A 116. Aluminum coated woven wire fence shall conform to the requirements of ASTM A 584.

710.03 Chain Link Fence. Chain link fabric and the required fittings and hardware shall conform to the requirements of AASHTO M 181, for the kind of metal, coating, size of wire, and mesh specified. Galvanized coiled spring steel tension wire shall be 7 (.177") gage, conforming to ASTM A 641, hard temper, with Class 3 coating unless otherwise specified or shown on the drawings.

710.04 Metal Beam Rail. Steel rail elements shall be corrugated sheet steel beams conforming to the requirements of AASHTO M 180 of the designated class and type.

Aluminum rail elements shall conform to requirements shown on the plans or in the special provisions.

710.05 Timber Rail. The timber rail shall be cut from the specified grade of dry, well seasoned and dressed timber stock of the species specified, which shall meet the applicable requirements of AASHTO M 168.

Where preservative treatment is specified this shall conform to the requirements of subsection 716.03.

Rustic rails shall be straight, sound, and free of injurious defects and shall have been cut from live trees not less than 30 days but not more than 1 year before use. They shall have been stripped of bark before seasoning or shall have been stored under water. Immediately before the logs are used in the work all knots and projections shall be trimmed smooth and, if water cured, all bark shall be peeled. Slight curvature or "wind" to give a pleasing appearance to the structure will be permitted. Logs of only one species shall be used in the construction of any one continuous length of guardrail.

710.06 Fence Posts. Wood posts shall conform to the details and dimensions indicated on the plans. All wood posts shall be of sound, seasoned wood, peeled and with ends cut square or as indicated. The posts shall be straight and all knots trimmed flush with the surface. Where treated posts are called for, the kind and type of treatment shall conform to that indicated on the plans. When red cedar posts or bracing is furnished, the requirements for peeling may be omitted.

All dimension timber and lumber required for fences or gates shall be

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