# Supported shapes of compound section | Pattern | Shape | Parameters \[mm] | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- | ---------------- | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-742e999e29c59a8945bb264f19d6c3df0207f9bd%2F45_supportedcompound_double_i_section.png?alt=media) | Double I section | a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-6124926e034e4ab721c6f02a54f1086aeba479a2%2F45_supportedcompound_doublechannel_ftf.png?alt=media) |

Double Channel FtF

(face to face position)

| a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-c7cee1127317db0c5ef00e706fe79ca1882ea269%2F45_supportedcompound_doublechannel_btb.png?alt=media) |

Double Channel BtB

(back to back position)

| a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-92ad6f98b3af31e0e960dd59d3f3380b6fd8988d%2F45_supportedcompound_starredangle.png?alt=media) |

Starred Angle

(diagonal position)

| a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-37847f0e8f096164c44d707051a4e6127324f09a%2F45_supportedcompound_doubleangle_btb.png?alt=media) |

Double Angle BtB

(back to back position)

| a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-706d1695d5f1216bd7879038134f4635e456fd13%2F45_supportedcompound_doubleangle_ftf.png?alt=media) |

Double Angle FtF

(face to face position)

| a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-869916527e3788bfb098b627c14abba3ba0d1dff%2F45_supportedcompound_doubleangle_btb_ll.png?alt=media) |

Double Angle BtB LL

(long leg - back to back position)

| a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-de22e05a9e0a04086af1c738cb7735543e8e7b95%2F45_supportedcompound_doubleangle_ftf_ll.png?alt=media) |

Double Angle FtF LL

(long leg - face to face position)

| a | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-b0412eb016bb990cf5a48301a793d59fd99d44ba%2F45_supportedcompound_fourangle_btb.png?alt=media) |

Four Angle BtB

(back to back position)

| a; b | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-8e0db504d2807fa7e67af3bf3d13c3e42bb9dcc2%2F45_supportedcompound_fourangle_ftf.png?alt=media) |

Four Angle FtF

(face to face position)

| a; b | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-9b5073480d3d98b62643b79227ec4fb67e5abd52%2F45_supportedcompound_fourangle_i.png?alt=media) | Four Angle I | a; b | | ![](https://2984879901-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP3f3I86mz7TGPX0pWLAB%2Fuploads%2Fgit-blob-61908ef0cd2545274be1bd61ae021cc5374900e0%2F45_supportedcompound_doublepipe.png?alt=media) | Double pipe | a |