Steel Rebar Designations 1

[jqeng]

I have the structural drawings for a two way slab and the rebars are called out as 10MB, 10MP, 10MC, 15MT... Any ideas what these letters represent?

 

[msquared48]

I'm guessing, but, all Mild steel (as opposed to PS?), Bottom, Perimeter, Center and Top?

Mike McCann
MMC Engineering

 

[JAE]

MB - Middle strip bottom?

MP - Middle strip perpendicular?

MC - Middle strip center?

MT - Middle strip top?

Just guesses.

 

[msquared48]

Sounds believable to me.

Mike McCann
MMC Engineering

 

[hokie66]

I would think the 10 and 15 are the bar diameters.

Use of M10, etc, usually means 10 millimetres, maybe 10M means the same thing?

B and T, bottom and top.

C, continuous.

P, no idea.

 

[msquared48]

I just went P.

Were these plan notations developed by a structural engineer or an architect? How old are the drawings? I assume they are from outside the US?

Mike McCann
MMC Engineering

 

[msquared48]

Could these be notations referring to a bar bending schedule, not necessarily bar placement?

Mike McCann
MMC Engineering

 

[jqeng]

they are structural drawings made in Canada. They are fairly old. 1980's.

 

[trainguy]

Canadian rebar designations are as follows:

10M - 10mm rebar

15M - 15mm rebar

etc.

The B, P C, T designations are uncommon - I'm not sure what they mean.

tg

 

[TXStructural]

My Canadian detailing contact says the 10M and 15M are 10 mm and 15 mm bars, respectively. He did not recognize the other letters as any standard designations. He agrees that they could be top, bottom, center, but I would hope there is a legend in the plans (like a typical elevation/section showing cut-offs, etc.) since they are not standard.

 

[Teguci]

I thought the canadian designations always had an A at the end?

 

[gwynn]

Nope, Canadian designations are xxM, where the xx is the nominal diameter in mm. I see 10ME and sometimes 10MG for epoxy coated and galvanised, but am unfamiliar with the notation used above.

 

[trainguy]

LOL - Good one Teguci.

I believe it went right over gwynn's head, eh?

tg