482 ALASKA 2020 SECTION 707
707-2.01 CORRUGATED STEEL PIPE, PIPE ARC HES, AND UNDERDRAINS . Meet AASHTO
M 36 for conduits and coupling bands including special sections such as elbows and f lared end sections. Meet the specified sectional dimensions and gages. Furnish shop- formed elliptical pipe where specified. Fabricate pipe using one of the following:
1.Zinc-coated steel meeting AASHTO M 218
2.Aluminum -coated steel meeting AASHTO M 274
3.Aluminu m-zinc alloy coated steel meeting AASHTO M 289
707-2.02 Bituminous Coated Corrugated St Eel Pipe, Pipe Arche S, and
UNDERDRAINS. Meet AASHTO M 190 for conduits and coupling bands. Meet the specified sectional dimensions, gages, and type of bituminous coating. Fully coat coupling bands with bituminous material. Furnish shop- formed elliptical pipe where specified. Use the same gage of steel for special sections, such as elbows and flared end sections, as the conduit to which they are joined. Meet the requirements of AASHTO M 190. Use the type of coating and invert paving specified. Meet the specified minimum size of perforations after coating.
707-2.03 CORRUGATED ALUMINUM ALLOY CULVE RT PIPE AND UNDERDRA INS. Meet
AASHTO M 196.
707-2.04 STRUCTURAL PLATE CULVERTS. Meet the following:
Steel or iron plates AASHTO M 167 Aluminum alloy AASHTO M 219
707-2.05 DUCTILE IRO N PIPE FOR WATER AND SANITARY SEWER. Use ductile iron pipe
and fittings that are bituminous coated, cement mortar lined, have push on type joints, and a 150 psi working pressure. Meet the following: Cement mortar lining ANSI/AWWA C104 Loose Polyethylene Encasement ANSI/AWWA C105 (8 mil when required) Ductile Iron Fittings ANSI/AWWA C110 or C153, and C104 SBR Rubber Gaskets ANSI/AWWA C111 (Push on or mech. joint) Threaded Flange Joints ANSI/AWWA C115 Ductile Iron Pipe ANSI/AWWA C150 and C151 and C104
707-2.06 SERVICE PIPE. Meet the following:
1.Copper Pipe . Cold drawn, seamless, annealed Type “K” with flare fittings meeting ASTM B88.
2.Steel Pipe . Standard weight, Grade B, galvanized, welded or seamless pipe meeting ASTM A53.
707-2.07 GALVANIZED STEEL WATER CONDUIT. Meet the following:
Galvanized Pipe ASTM A53 Galvanized Fittings ASTM A197 galvanized per AASHTO M 232 483 ALASKA 2020 SECTION 708 PAINTS
708-1.01 GENERAL REQUIREMENTS . Ship paint in strong, substantial containers, plainly
marked with the name, weight, and volume of the paint content, together with the color formula, batch number, and the name and address of the manufacturer. Store materials in a cl osed weather proof, dry shelter at all times. Have the paint manufacturer furnish samples of the actual batches of paint supplied for the project for independent laboratory testing of chemical composition. Use reduction and clean up thinners approved by t he coating manufacturer. Measure and document all thinner reduction with records provided to the Engineer. Ship all thinners in their manufacturer’s original containers.
708-2.01 Paint for S Teel Structures.
1.Prime Coat . A single component, moisture cure, polyurethane (SC -MC-U) using zinc dust pigment, meeting the following: zinc powder 78% by weight, min. volume of solids 60% min. zinc in dry film 83% minimum, by weight (ASTM D521) weight per gallon 23 pounds, min. VOCs 3.75 pounds per gallon, max.
2.Intermediate Coat . A single component, moisture cure, polyurethane (SC -MC-U). Pigment color must contrast with the prime coat and the top coat. Meet the following: micaceous iron oxide (MIO) 3.3 pounds per gallon, min. (ASTM D5532, Type I) volume of solids 60% min. weight per gallon 12.5 pounds min. VOCs 3.75 pounds per gallon, max.
3.Top Coat . A single component, moisture cure, aliphatic polyurethane (SC -MC-ALIP- U). Pigment color FSS FED -STD-595B, color number 26492. Evaluate the color match as a general match under a daylight source using ASTM D1729. Meet the following: micaceous iron oxide (MIO) 3.3 pounds per gallon, min. (ASTM D5532, Type I) Volume of solids 60% min. Weight per gallon 12 pounds min. VOCs 3.75 pounds per gallon, max. All coatings must pass the fol lowing tests: Corrosion Resistance, ASTM B117, Salt Spray Test . Minimum of 5000 hours with less than 1/16 inch creep from scribe. Use 1/8 inch minimum thickness ASTM A36 steel panels, having SSPC - SP 10 Near White Blast with 1 to 2 mils angular profile.
Source: Alaska Standard Specifications for Highway Construction, 2020 Edition. Pages 510–510 of 584.