(a) Section 4, Materials, has been revised to cite ASTM A1011/A1011M and ASTM A1018/A1018M rather than ASTM A570/A570M.
(b) Supplementary Requirement S1 has been added to address Section III construction.

(a) Section 4, Materials, has been revised to cite ASTM A1011/A1011M and ASTM A1018/A1018M rather than ASTM A570/A570M.
(b) Supplementary Requirement S1 has been added to address Section III construction.