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