528 ALASKA 2020 SECTION 731 WATERPROOFING MEMBRA NE
731-2.01 SPRAY -APPLI ED WATERPROOF ING MEMBRANE . Meet the requirements in Table
731-1. TABLE 731 -1 SPRAY -APPLIED WATERPROOFING MEMBRANE
731-2.02 SHEET WATER PROOFING MEMBRANE . Meet the requirements in Table 731- 2.
TABLE 7 31-2 SHEET WATERPROOFING MEMBRANE Test Requirements Test Method Adhesion to Concrete 100 psi min., with failure in concrete ASTM D4541 Tensile Strength at Break 1500 psi min. ASTM D638 Elongation at Break 130% min. ASTM D638 Crack Bridging Pass at 10 cycles of 1/8 inch when tested at -15°F ASTM C1305 Interlayer Shear Strength 40 psi min. AASHTO TP -114 Test Requirements Test Method Tensile Strength at Break 50 lbs/inch min. ASTM D882 Elongation of Membrane at Break 300% min. ASTM D882 Puncture Resistance 200 lbs min. ASTM E154 Permeability 0.05 perms max. ASTM E96 Flexibility Pass ASTM D146 529 ALASKA 2020 SECTION 740 SIGNALS AND LIGHTING MATERIALS
740-2.01 GENERAL. Use electrical materials, devices, fittings, and hardware that conform to
applicable NEMA and ANSI standards. Use electrical products that are Third Party Labeled or Listed (by a State of Alaska- approved independent electrical testing laboratory such as UL, ETL, CSA, etc.), unless otherwise indicated on the Materials Certification List (MCL). Ensure that all material and workmanship, as determined by the Department , conform to the standards of the NEC, the NESC, and local safety codes as adopted and amended by the authority having jurisdiction.
740-2.02 Signal and Lighting Structures.
1.Design. Design structures for highway lighting and traffic signals to conform to the 2013 AASHTO Standard Specifications for Structural Supports of Highway Signs, Luminaires, and Traffic Signals, including September 2013 errata and 2015 Interim Revisions. All working drawings and calculations must be stamped with the seal of, dated b y, and signed by a Professional Engineer registered in the State of Alaska. Submit the working drawings and calculations for each pole to the Engineer for approval. Design for all stresses on the completed structure with all hardware in place. Show the des ign wind loads, projected areas, wind drag coefficients, material properties, and other design information on the working drawings. Include a summary of the loads used in each pole’s design. Design each electrolier to include a traffic sign, 48 inches by 4 8 inches, located with its centroid 14 feet above the base of the pole. Determine the shaft lengths and mast arm connector plate locations of all poles to meet the plan mounting heights of luminaires and traffic heads. Design signal mast arms so that no signal heads or signs will be mounted within 12 inches either side of a mast arm extension splice. Design all poles and mast arms with a round or 16-sided cross section, except high tower poles may also be 12- sided cross section.
2.Fabrication. Fabricate a ll posts, poles, and mast arms from tapered steel tubes. Fabricate tubes with walls up to ½ -inch thick from the pre- qualified base metals listed in AWS D1.1 and which feature maximum yield strengths of 70,000- psi. Fabricate all elements greater than ½ - inch thick from steel that conforms to ASTM A709 and meets the Fracture Critical Impact Test requirements for zone 3. Fabricate 10 feet long signal posts from sheet steel that features a minimum thickness of 11 US Standard Gage. Fabricate each post with a m inimum inside diameter of five inches at the base plate. Use a three and one- half inch long piece of 4- inch schedule 40 pipe that conforms to ASTM A53 Grade B as a post -top adapter. Fabricate poles from full length sheets or shorter sections. Fabricate each section from not more than 2 pieces of sheet steel. When using 2 pieces, place the longitudinal welded seams directly opposite one another. Place the welded seams on adjacent sections to form continuous straight seams from the base to the top of the pol e. The Department will not accept poles and mast arms made with laminated steel elements. Steel selection shall be according to ASTM A385 for silicon content. Hot dip galvanize all pole segments and attachments to meet AASHTO M 111 and these specifications . Completely submerge pole segments in one dip in a kettle of concentrated
Source: Alaska Standard Specifications for Highway Construction, 2020 Edition. Pages 556–556 of 584.