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fDesc[0] = "Section Builder is intended for creating arbitrary compound sections from steel rolled shapes and plates, as well as calculating their geometric properties. Section Builder determines:<br /> - cross-section area A;<br /> - moments of inertia Iy and Iz values about central axes parallel to the coordinate axes of the right<br /> Cartesian coordinates system Y and Z;<br /> - radii of inertia iy and iz about the same axes;<br /> - moment of inertia at free torsion It;<br /> - coordinates of the gravity centre;<br /> - value of the angle of inertia principal central axes (the angle &alpha; between U-axis and Y-axis);<br /> - maximum Iu and minimum Iv moments of inertia;<br /> - maximum iu and minimum iv radii of inertia;<br /> - maximum Wu and minimum Wu-resisting moments about the U-axis;<br /> - maximum Wv and minimum Wv- resisting moments about the V-axis;<br /> - radius of gyration from U-axis along the positive (au ) and negative (au-) directions of V-axis;<br /> - radius of gyration from V-axis along the positive (av ) and negative (av-) directions of U-axis.";

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