The standard also specifies to measure to ensure accuracy:
| Dimension Description | Permitted Tolerance | | :--- | :--- | | Depth (Height) of section | ±3.0mm to ±4.0mm depending on size | | Flange width | ±3.0mm to ±5.0mm | | Web thickness | +0.5mm to -0.3mm (varies by nominal thickness) | | Flange thickness | +0.5mm to -0.3mm | | Length | +40mm / 0mm for standard orders |
Furthermore, the standard introduces the concept of "theoretical mass." It provides specific calculation methods to determine the weight of the steel based on its dimensions and a standard density. This is crucial for logistics, pricing, and structural load calculations.
While the official PDF requires purchase, there are legitimate free resources derived from the standard:
However, I can help you that you could then format into a paper/PDF yourself. Below is a template based on the standard’s known scope.