private void UpdateData()
{
float r = t3 / 2f;
float di = t3 - 2 * tw;
float ri = di / 2f;
this.area = (float)Math.PI * (r*r - ri*ri);
//this.torsConst = 0;
this.i33 = (float)(Math.PI * (t3*t3*t3*t3 - di*di*di*di) / 64f);
this.i22 = i33;
this.as2 = (float)Math.PI * t3 * tw;
this.as3 = as2;
//this.s33 = 0;
//this.s22 = 0;
//this.z33 = 0;
//this.z22 = 0;
//this.r33 = 0;
//this.r22 = 0;
}