4 Replies Latest reply on May 12, 2015 11:39 AM by Gary Blenkhorn

# Anyone know what this notation means?

2x22-D12

It's on a drawing I received from a client.  It came to me from Korea but I believe it originated in Kuwait.  It has a leader pointing to rebar, so I assume that the D12 refers to the bar diameter (Ø1/2" or #4 bar here), but I have no idea what the 2x22 means.

• ###### Re: Anyone know what this notation means?

Wikipedia has an example near the bottom from New Zealand where 3-D12 means Three mild strength (300 MPa) 12 mm diameter rebars. Maybe the 2x22 means 2 sets of 22 rebars, and the D12 probably means 12mm diameter.

• ###### Re: Anyone know what this notation means?

Maybe the 2x22 means 2 sets of 22 rebars, and the D12 probably means 12mm diameter.

I don't think that's it.  There are numerous similar notations on this drawing, but that particular one is pointing to a cross-section of a longitudinal bar, and it's showing five of them.  Thanks for trying.

I'm about to send back to the client asking for an explanation, but considering the time difference I expect it will be tomorrow before I get an answer.

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D12 is a tolerance specification, does that help?

• ###### Re: Anyone know what this notation means?

The D12 is a New Zealand standard for rebar as identified by Jamil.  D12 = Deformed 300MPa bar 12mm in diameter.  HD12 stands for Deformed  500MPa bar 12mm and R12=Round bar 300MPa 12mm. I believe that the 2 x 22 means 2 bars spaced 22mm apart.  Typically they will double up on bars for seismic strength but may only show one and note that there are 2.