Reinforcing Bar Identification and Properties


Mill Symbol

Bar Size (Diameter)
Blank Space if grade symbol is in numbers

Grade or grade symbol


Grade 400R

Either the number 400 or one offset line through at least 5 spaces

Grade 500R

Either the number 500 or two offset lines through at least 5 spaces

Grade 400W and 500W

The letter W between the blank space and the grade symbol or in the blank space

Note: The letter R is not rolled onto the bar.






RSIC / IAAC Standards Practice Manual New edition coming soon

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