Standard H-beams range in weight from ~10 kg/m to 60 kg/m. Lightweight beams (10-20 kg/m) are used in residential construction or light frameworks. Medium weights (20-40 kg/m) suit commercial buildings and warehouses. Heavy beams (40-60 kg/m) are for industrial structures, bridges, or heavy machinery. Custom heavy-duty beams can exceed 100 kg/m for specialized applications like shipbuilding or power plants. Weight correlates with dimensions: larger flanges/web thickness increases weight and load capacity. Engineers select weights based on structural calculations, ensuring beams handle expected loads without overdesigning (adding unnecessary weight/cost).