While is an older standard, it is still frequently referenced in modern engineering documentation alongside newer guidelines like 22TCN 243-98 (Bridge Inspection) and TCVN 11823:2017 (Road Bridge Design). It acts as a bridge (pardon the pun) between traditional Soviet-era engineering practices and modern international standards like AASHTO LRFD .
A: No. While it contains Chromium (up to 1.2%), this is not enough to make it stainless. It will rust and requires protective coatings in wet environments. 22tcn 170-87