> For the complete documentation index, see [llms.txt](https://gitbook.saf.guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook.saf.guide/annexes/formcodes.md). # Formcodes Formcode is defining the shape of cross-section and how it is oriented according to used LCS. Due to defining the formcode for CSS, exchange of SAF files between applications that are differently handling LCS is possible. {% hint style="info" %} Formcode of manufactured cross-section, together with the attribute "**LCS of cross-section**" from the sheet [Project and model specification](/getting-started/project-and-model-specifications.md#project) is defining the exact orientation of cross-section in the model. Formocode set to "**0**" means that receiving application won't do any action ensuring the proper positioning of CSS. {% endhint %} | Formcode number | Name | Description | Examples of corresponding profiles | Corresponding Description ID of the profile | | :-------------: | :------------------------: | :------------------------------------------------------------------------------------------------: | :--------------------------------: | -------------------------------------------------------------------------------------------------------------------------- | | 0 | - | Provisional formcode | - | not available | | 1 | I-section | Profiles symmetrical around the vertical and horizontal axes (typically I-Sections) | ![](/files/rhOebf6TU56p3e4MO4cQ) | 1, 2, 3, 4, 5, 11, 12, 13, 29, 33, 34, 35, 36, 37, 38, 39, 40, 55, 63, 64, 68, 69, 71, 72, 91, 96, 102, 105, 106, 109, 110 | | 2 | Rectangular Hollow Section | Rectangular Hollow Section | ![](/files/LKaLkxP0DCxcBFr95uD4) | 25, 27, 49, 50, 74, 75, 82, 83, 84, 85, 86, 87, 93, 94 | | 3 | Circular Hollow Section | Circular Hollow Section | ![](/files/V6uoK6JmtAiy4C0PS12u) | 20, 21, 51, 52, 53, 54,88, 89, 90, 95, 103 | | 4 | L-section | Equal and unequal L-sections | ![](/files/LcTkE1ezpcLFWSoWJ1fK) | 8, 9, 10, 16, 45, 46, 65, 73, 98, 99 | | 5 | Channel Section | Profiles symmetrical around the horizontal axes Opening oriented to the right (typically channels) | ![](/files/iCN5oqVPiEO8QzdgEBKG) | 6, 7, 15, 18, 28, 41, 42, 43, 44, 57, 62, 66, 67, 70, 76, 97, 101, 107, 108, 111, 112, 113, 114, 115, 118 | | 6 | T-section | Profiles symmetrical around vertical axes Flange at the bottom (typically T-section) | ![](/files/yOMxnJ005HTV3YU6VR52) | 23, 31, 47, 48, 77, 78, 80, 81, 92 | | 7 | Full Rectangular Section | Full Rectangular Section | ![](/files/8VqrsqWwJLemGrJlGP3w) | 14, 22, 30, 79 | | 8 | Full Circular Section | Full Circular Section | ![](/files/H1lkmgRjHU8HrKdmXLf0) | 26 | | 9 | T-section Up | Profiles symmetrical around vertical axes Flange at the top (typically T-section) | ![](/files/v5dQTpFyUnVC2qcYMsvp) | 23, 31, 47, 48, 77, 78, 80, 81, 92 | | 10 | L-section III | Equal and unequal L-sections | ![](/files/yXFyh7fBzjqGdKMoJtnr) | 8, 9, 10, 16, 45, 46, 65, 73, 98, 99 | | 11 | L-section I | Equal and unequal L-sections | ![](/files/CgaHr0tcNMZeZFe5WsQ4) | 8, 9, 10, 16, 45, 46, 65, 73, 98, 99 | | 12 | L-section IV | Equal and unequal L-sections | ![](/files/YYDNkvKO7n8AenAPAOS8) | 8, 9, 10, 16, 45, 46, 65, 73, 98, 99 | | 13 | Channel Section Left | Profiles symmetrical around the horizontal axes Opening oriented to the left (typically channels) | ![](/files/Ep6KwhtCaCIUJA4hDhIL) | 6, 7, 15, 18, 28, 41, 42, 43, 44, 57, 62, 66, 67, 70, 76, 97, 101, 107, 108, 111, 112, 113, 114, 115, 118 | | 14 | Asymmetric I-Section | I-sections symmetrical around vertical axis only (typically asymmetric I-Section) | ![](/files/gAWU3mD8WK53mAGBQSDH) | 24 | | 15 | Asymmetric I-Section Up | I-sections symmetrical around vertical axis only (typically asymmetric I-Section) | ![](/files/xtS5XRAr75N2u0t1mbyK) | 24 | | 16 | Z-section | Z-sections with equal or unequal flanges Top flange to the left | ![](/files/S2P9Sz1YeBSzBsvKgEuA) | 19, 32, 56, 100 | | 17 | Z-section Right | Z-sections with equal or unequal flanges Top flange to the right | ![](/files/5O7APtmTpwzQGdV9kwyG) | 19, 32, 56, 100 | | 18 | Omega Section | Omega sections Opening is oriented to the bottom | ![](/files/cUaAxuzSiR7Y90URws5S) | 17 | | 19 | Omega Section Down | Omega sections Opening is oriented to the top | ![](/files/X6rOL5hliqmaI50gDoyy) | 17 | | 20 | Sigma Section | Sigma sections Opening is oriented to the right Top flanges are unequal or inclined | ![](/files/GhbrfXulrLVGrhn6KnmP) | 58, 104 | | 21 | Sigma Section III | Sigma sections Opening is oriented to the left Top flanges are unequal or inclined | ![](/files/q0II47IQIKLpGZrNmUoR) | 58, 104 | | 22 | Sigma Section IV | Sigma sections Opening is oriented to the left Bottom flanges are unequal or inclined | ![](/files/EHZgXaFsJPmVCjmoMr2D) | 58, 104 | | 23 | Sigma Section I | Sigma sections Opening is oriented to the right Bottom flanges are unequal or inclined | ![](/files/2vCSXIHOualdPlOrHwF3) | 58, 104 |