Rc beam rebar at section lisp
How are reinforcing-bar diameters designated in metric units? For example, this setting:
(* (getreal "\nTop bar Size [ie. 4, 5, 6 : ] :") 0.125)
is because Imperial-units bar diameter numbers represent eighths of an inch -- a #4 bar is 4/8" [i.e. 1/2"] in diameter. That's why it multiplies the given number by 1/8 to get an actual bar diameter to use in calculations. You would need to use numbers appropriate to the way they are specified in metric terms [which I don't know], to get a result in meters. Other numerical functions would also need to be adjusted similarly for metric standards -- for example, it looks like there's something in there for distance in from the concrete surface.
@smaher12 wrote:
It looks like you have to multiply everything by 0.0254.
....
I don't think so, unless for some reason they're drawing Imperial-sized reinforcing but in Metric drawing units. Surely metric reinforcing bars don't come in multiples-of-1/8" diameters. Are they specified simply by diameter in millimeters, or centimeters, or maybe some kind of gauge, or shorthand numbering [like a #1 is a certain standard size, and a #2 is another, etc., but those are not dimensional numbers], or...? What are the standard sizes? Etc.
