709.34 Aluminum Alloy Pipes :
Aluminum alloy pipe shall conform to ASTM B241, alloy 6061, temper condition T6.
709.35 Aluminum Alloy Rivets :
Aluminum alloy rivets shall conform to Military Specifications MIL -R-5674; grade and head style shall be as specified by the Engineer.
709.36 Aluminum Alloy Bolts, Nuts and Set Scr Ews :
Aluminum alloy bolts and set screws shall be made from rod conforming to ASTM B211, alloy 2024, temper condition T4. The aluminum alloy nuts shall be made from rod conforming to either ASTM B221, alloy 6061, temper condition T6 or ASTM B211, alloy 6061, temper condition T6. Bolt head and nuts shall conform to the American Standard Regular Hexagon, ASA Specifications B 18.2 with the following modification: the width across the flats and the width across the corners may exceed the maximum given in the specification tables by an amount no greater than 20 percent (20%) of the difference between the maximum and minimum values given in the tables. Threads shall conform to American Standard C oarse Thread Class 2. The finished product shall be in the fully heat -treated and aged condition. Anchor bolts shall be given a clear anodic coating at least 0.0002 in thick. Exposed nuts and washers need not be given as anodic coating.
709.37 Aluminum Alloy Washers :
Aluminum alloy washers shall be made from sheet conforming to ASTM B209, Alclad 2024, temper condition T3 or T4 depending upon the thickness supplied.
709.38 : Blank
709.39 Aluminum Alloy Sand Castings :
Aluminum alloy sand castings shall conform to Table 658.4.3.
709.40 Aluminum Alloy Shim Material :
Aluminum alloy shims shall be made from sheet or plate conforming to ASTM B209, alloy 1100, temper condition 0.
709.41 Aluminum Filler Metal for Welding :
Aluminum filler metal for welding shall conform to ASTM B285, alloy ER 4043. 709.4 2 through 709.44 : Blank
709.45 Galvanized Steel Guardrail Posts :
Steel guardrail posts shall be fabricated from steel meeting the requirements of ASTM A36 or fabricated in accordance with ASTM A769, Grade 40. They shall be of a section, length and weight as specified on the Plans. The weight shall not be less than 97.5 percent (97.5%) of that specified. Galvanizing shall be in accordance with AASHTO M 111, with a minimum of 2 oz. per square foot.