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RE: Bar versus wire

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I have heard of problems maintaining bottom cover when using small diameter wires, because they are easily bent when stepped on.  A D31, though, has the same section as a #5 bar and so shouldn't be any more troublesome than a #5 would be in the same application if it is chaired properly. 
Paul Crocker, PE, SE
-----Original Message-----
From: C Chan [mailto:seaint_list(--nospam--at)]
Sent: Wednesday, November 20, 2002 8:32 AM
To: seaint(--nospam--at)
Subject: RE: Bar versus wire

Is not maintaining bottom cover a problem with wires?

 Paul Crocker <paulc(--nospam--at)> wrote:

There are different ASTM designations for rebar and for wire.  The yield strength varies within the kinds of wire you specify, but fy is generally higher than rebar even when the size is the same. 
Depending on the layout of the structure, there could also be placing advantages in placing wire sheets versus placing individual bars in each direction. 
Paul Crocker, PE, SE
-----Original Message-----
From: GSKWY(--nospam--at) [mailto:GSKWY(--nospam--at)]
Sent: Tuesday, November 19, 2002 11:45 AM
To: Seaint(--nospam--at)
Subject: Bar versus wire

What is the difference between specifying bar versus wire,   i.e. a #5 versus D31 wire (same size).  If you specify D31 wire,  do you get it in a coil,  like what they fabricate the bars from?

What is the advantage of specifying D31 wire when it is something like a 10 ft length?  

I am trying to make sense out of something I am reading pertains to research for bridge design.  

Gail S. Kelley

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