615STANDARD SIGNS

313 ALASKA 2020 SECTION 615 STANDARD SIGNS

615-1.01DESCRIPTION . Furnish and install standard signs and delineators. Remove and

relocate or remove and dispose of existing signs and markers, as specified.

615-2.01MATERIALS. Use materials that conform to the following Subsections:

Sheet Aluminum 730-2.01 High Density Overlaid Plywood 730-2.02 Retroreflective Sheeting 730-2.03 Sign Posts 730-2.04 Delineator Posts 730-2.05 Acrylic Prismatic Reflectors 730-2.06 Sign Support Fasteners 730-2.07

and spacing charts, for approval before fabrication. Submit 4 sets of collated shop drawings prepared according to Subsection 105- 1.02. Show the following on each sign drawing:

borders, and background) on sheet aluminum panels for all signs except the following:

Use ASTM D4956 Type VIII, IX, or XI fluorescent orange retroreflective sheeting. For temporary installations, place reflective sheeting on sheet aluminum, plastic, or plywood panels. For Roll -Up signs use 3M series RS 24, Reflexite Marathon Orange, or approved equal (based on durability and reflectivity, as determined by the Engineer). Use flexible signs with fluorescent retroref lective sheeting that is ASTM D4956 Type VI or better.

VIII, IX, or XI retroreflective sheeting for background of sign and all strips.

D4956 Type IX, or XI retroreflective sheeting for legends and background. Create the legend in one of the following ways:

transparent adhesive to overlay the film on a white ASTM D4956 Type IX, or XI retroreflective background. 314 ALASKA 2020 d. Fluorescent Yellow -Green School Area Signs : Use ASTM D4956 Type VIII, IX, or XI retroreflective sheeting for background. Use a manufacturer -recommended clear coat on all screened signs. Use sign layouts (including characters, symbols, corner radii, and borders) that conform to the ASDS. Frame all rectangular signs over 53 inches (measured along the horizontal axis) and all diamond shape signs 60 x 60 inches and larger. Construct the frames of aluminum as indicated on the Plans.

posts. Use Class A concrete meeting the requirements of Section 501 for overhead sign support foundations. Use Class B concrete for steel -reinforced roadside sign foundations meeting the requirements of Section 550. Concrete for other sign foundations may be Class W.

Fabricate flexible delineators using ASTM D4956 Type III, IV, V, IX, or XI Retroreflective Sheeting.

including retention of fluorescent yellow -green (measured in accordance with ASTM E2301) for ten years according to the following criteria:

The warranty shall stipulate that: If the sheeting fails to meet the minimum fluorescence values within the first 7 years from the date of fabrication of the sign, the manufacturer shall, at the manufacturer’s expense, restore the sign surface to its original effectiveness. If the reflective sheeting fails to meet the minimum fluorescence values within the 8th through 10th year from the date of fabrication, the manufacturer shall, at the manufacturer’s expense, provide enough new replacement sign sheeting to the Department to restore the sign surface to its original effectiveness.

615-3.01CONSTRUCTIO N REQUIREMENTS

thick and thoroughly compact it.

abutments using the types and sizes of fastening hardware shown on the Plans.

the details shown on the Plans or as directed. 315 ALASKA 2020 7. Notify the Engineer 5 working days prior to beginning sign salvage activities. The Engineer will physically identify those signs to be salvaged. Protect all items from damage during salvaging and delivery. For each sign so designated, disconnect sign post from panel and group the panels together. Group posts together with their hardware. Deliver sign panels, posts and hardware to the State Maintenance Yard noted in the Special Provisions. Do not deliver salvaged materials until they have been inspected and approved by the Engineer. Replace any items damaged by you at no additional cost to the Department. Remove and dispose of project signs and/or parts designated for removal and not selected for salvage. Dispose of foundations from salvaged existing signs in a manner approved of by the Engineer (remove and dispose, abandoned in place, or otherwise). If they are abandoned in place, remove the tops of the foundations, reinforcing steel, anchor bolts, and conduits to a depth of not less than 12 inches below roadway subgrade or unimproved ground, whichever applies. All sig ns and posts at a single installation will be considered as one unit.

rivets, delaminated reflective sheeting, or aluminum marks. Do not make repairs to the face sheet.

Meet MASH crashworthiness requirement for breakaway hardware, unless approved by the Engineer.

instructions.

extra compensation.

through the top center of the foundation. Grade the area 24 inches up and down slope of the foundation edge so that no portion of the foundation projects above the surrounding slope and water will drain away from the foundation.

Show the last two digits of the year in clear and bold numbers. Make the label from ASTM D4956 Type I or brighter retroreflective sheeting. Use background and legend colors meeting Table 615- 1.

316 ALASKA 2020 TABLE 615 -1 DECAL COLORS YEAR BACKGROUND COLOR LEGEND COL OR XXX1 Yellow Black XXX2 Red White XXX3 Blue White XXX4 Green White XXX5 Brown White XXX6 Orange Black XXX7 Black White XXX8 White Black XXX9 Purple White XXX0 Strong Yellow -Green Black Central values and tolerance limits for each color, as ref erenced in the MUTCD, are available from the Federal Highway Administration, (HHS -30), 400 7th St. SW, Washington, D.C. 20590

615-3.02SIGN PLACEM ENT AND INSTALLATION . The location and type of installation will be

as shown on the Plans. Sign locations are approximate and subject to field adjustment by the Engineer. Do not allow the top of the embedded steel tube to extend more than 2 inches above the surrounding ground and concrete foundation. On all signs, install 2- inch diameter wind washers, colored to match the sign face, between the fastener head and the sign. Use rust -resistant washers fabricated from a material equal in strength to the sign blank. Mount signs on mast arms level. Bring existing signs that are to remain, into conformance with Alaska St andard PlanS -05. Keep existing signs in service until they are no longer needed.

615-4.01METHOD OF M EASUREMENT

Standard Signs and Object Markers . By the total area of legend- bearing sign panel erected in place. No deductions in quantity for corner rounding will be made. Nominal dimensions for sign sizes indicated on the Plans will be used to calculate sign pay quantities. Octagons and round signs will be measured as rectangles. Only one side of each double- faced sign will be measured for payment. Removal and Relocation. By each, complete in place. Delineators . By each, complete in place. A single delineator consists of one post equipped with two reflectors. Salvage Sign. By each complete sign delivered in acceptable condition.

615-5.01BASIS OF PA YMENT. Sign posts, bases, and mounting hardware are subsidiary

When Items 615.0002.____, 615.0003.____, or 615.0006.____ do not appear on the bid schedule, this work is subsidiary.

317 ALASKA 2020 Payment will be made under: PAY ITEM Item Number Item Description Unit

615.0001.____ Standard Sign SF

02.____ Remove and Relocate Sign EACH

03.____ Remove and Relocate Milepost EACH

04.____ Delineator, Rigid EACH

05.____ Delineator, Flexible EACH

06.____ Salvage Sign EACH

07.____ Salvage and Dispose Sign EACH

318 ALASKA 2020 SECTION 616 THAW PIPE AND THAW WIRES

616-1.01DESCRIPTION . Furnish, fabricate, and install thaw pipes or electric thaw wire

MATERIALS

616-2.01THAW PIPE. Use materials that conform to the following:

Pipe ASTM A53, Galvanized Fittings ASTM A197, galvanized per AASHTO M 232 Pipe Hangers AASHTO M 218 Braces for Stand Pipe ASTM A36, galvanized per AASHTO M 111 Bolts and Nuts ASTM A307, galvanized per AASHTO M 232

616-2.02THAW WIRE. Provide materials, devices, fittings, and hardware m eeting NEMA

standards and bearing the approval of a third party certification, meeting ANSI Z 34.1. All electrical devices, components, and materials that will be installed in and/or around classified

the area in which they are installed. The electrical installation shall comply with the applicable Articles of NEC Chapter 5. Deliver all warranties and guarantees provided by the manufacturer to the Engineer bef ore acceptance of this work.

meeting ANSI C80.1. Install them as indicated on the applicable drawings. Use threaded type couplings, elbows, and nipp les.

iron or steel meeting ANSI/NEMA FB -1 and are compatible with the rigid conduit furnished and installed. Use threaded type fittings.

limiting conductive core

fluoropolymer overjacket

output is not specified, use 8 W/ft. at 50 °F

power connections and seals specifically designed for use with the particular type and size of heat cable.