# List of symbols

Symbol | Name of the symbol | Unit |
---|---|---|

$ $ | nominal length per tonne | $\mathrm{m}$ |

$A$ | cross-sectional area | $\mathrm{cm^2}$ |

$A_s$ | superficial area per metre length | $\mathrm{m^2/m}$ |

$B$ | specified side dimension $ B $ | $\mathrm{mm}$ |

$C_t$ | torsional modulus constant | $\mathrm{cm^3}$ |

$D$ | specified outside diameter | $\mathrm{mm}$ |

$H$ | specified side dimension $ H $ | $\mathrm{mm}$ |

$I$ | second moment of area | $\mathrm{cm^4}$ |

$I_t$ | torsional inertia constant | $\mathrm{cm^4}$ |

$I_{yy}$ | second moment of area $ I_{yy} $ | $\mathrm{cm^4}$ |

$I_{zz}$ | second moment of area $ I_{zz} $ | $\mathrm{cm^4}$ |

$M$ | mass per unit length | $\mathrm{kg/m}$ |

$T$ | specified thickness | $\mathrm{mm}$ |

$W_{elyy}$ | elastic section modulus $ W_{elyy} $ | $\mathrm{cm^3}$ |

$W_{elzz}$ | elastic section modulus $ W_{elzz} $ | $\mathrm{cm^3}$ |

$W_{el}$ | elastic section modulus | $\mathrm{cm^3}$ |

$W_{plyy}$ | plastic section modulus $ W_{plyy} $ | $\mathrm{cm^3}$ |

$W_{plzz}$ | plastic section modulus $ W_{plzz} $ | $\mathrm{cm^3}$ |

$W_{pl}$ | plastic section modulus | $\mathrm{cm^3}$ |

$i$ | radius of gyration | $\mathrm{cm}$ |

$i_{yy}$ | radius of gyration $ i_{yy} $ | $\mathrm{cm}$ |

$i_{zz}$ | radius of gyration $ i_{zz} $ | $\mathrm{cm}$ |