width 150[mm] "Beam width"
length 500[mm] "Beam length"
flange 28[mm] "Flange width"
th 1.5[mm] Thickness
fillet 3[mm] "Fillet radius"
l1 75[mm] "Top hat width"
h1 40[mm] "Top hat height"
l2 80[mm] "Bottom hat width"
h2 20[mm] "Bottom hat height"
d_nugget 6[mm] "Nugget diameter"