#betong

B30 Is Not C30: Comparing TCVN and Eurocode Grades

Engineers working across TCVN and Eurocode routinely map B30 onto C30/37 because the numbers match. They do not describe the same concrete. Comparing the two grade systems against a common basis shows the numeral mapping overstates design strength by 18 percent, while the correct mapping agrees within 2 percent, and reveals that both codes have been using the same safety factor on steel all along.