Structural Steel H-BEAM Height (H): Width (B): Web Thickness (t1): Flange Thickness (t2): Radius (r): Length (L): Calculate I-BEAM Height (H): Width (B): Web Thickness (t1): Flange Thickness (t2): Radius 1 (r1): Radius 2 (r2): Length (L): Calculate Wide Flange Height (H): Width (B): Web Thickness (t1): Flange Thickness (t2): Length (L): Calculate Pipe - Calculation of mass round pipe OD: t: Calculate Square/flat pipe A: B: t: Calculate Lip C - Calculation of mass Unit mass (Kg/m) = Basic mass [kg/(cm2.m)] x section area (cm2) Section area ((cm²) = t (H + 2A + 2C – 6.574t) Basic mass = 0.785 kg/(cm2.m) H: A: C: t: Calculate