HEA section
<img src="https://eng-calculations.com/SVG/EN/EN_10365/HEA section.svg" alt="HEA_section" title="HEA_section">
https://eng-calculations.com/SVG/EN/EN_10365/HEA section.svg
<img src="https://eng-calculations.com/SVG/EN/EN_10365/HEA section.svg" alt="HEA_section" title="HEA_section">
https://eng-calculations.com/SVG/EN/EN_10365/HEA section.svg