public static double TorsionalConstant(this FabricatedBoxProfile profile)
{
if (profile.IsNull())
{
return(0);
}
double tf1 = profile.TopFlangeThickness; //TODO: Allow for varying plate thickness
double tw = profile.WebThickness;
double width = profile.Width;
double height = profile.Height;
return(2 * tf1 * tw * Math.Pow(width - tw, 2) * Math.Pow(height - tf1, 2) /
(width * tw + height * tf1 - Math.Pow(tw, 2) - Math.Pow(tf1, 2)));
}
public static double WarpingConstant(this FabricatedBoxProfile profile)
{
return(profile.IsNull() ? 0 : 0);
}