Specifications include, but are not limited to: Rolled shapes and plate shall comply with the following ASTM specifications:
Carbon steel A-36
High strength carbon steel A-440
High strength low alloy steel A-242
Structural Plate material shall be mill-certified to meet an impact of 15 ft-lb. at -20o F in the
longitudinal direction using the Charpy V-Notch Impact Test in accordance with ASTM
A673.There shall be an average of three (3) tests with no one test below 10ft-lb. The location
of the test samples shall be in accordance with ASTM A673.
Pole shafts used in the structures shall be a minimum of twelve (12) sides and tapered. Taper
shall not exceed 0.5 inches per linear for foot for 60 DEGREE and 90 DEGREE poles. Taper
shall not exceed 0.4 inches per linear foot for all other poles.