A new macro has been included with the program to generate
load combinations for the Strength limit state per *Eurocode – Basis of
structural design, BS EN 1990:2002+A1:2005*.

The load combination
generator is capable of creating load combinations per equations 6.10, 6.10a,
or 6.10b found in Cl. 6.4.3.2.

These equations specify the following combinations of
loads:

$\underset{j\ge 1}{\Sigma}{\gamma}_{G,j}{G}_{k,j}+{\gamma}_{p}P+{\gamma}_{Q,1}{Q}_{k,1}+\underset{i>1}{\Sigma}{\gamma}_{Q,1}{\psi}_{0,1}{Q}_{k,1}$ | (6.10) |

Alternatively, for the strength limit state, the less
favorable of equations 6.10a and 6.10b may be used:

$\underset{j\ge 1}{\Sigma}{\gamma}_{G,j}{G}_{k,j}+{\gamma}_{p}P+{\gamma}_{Q,1}{\psi}_{0,1}{Q}_{k,1}+\underset{i>1}{\Sigma}{\gamma}_{Q,1}{\psi}_{0,1}{Q}_{k,1}$
| (6.10a) |

$\underset{j\ge 1}{\Sigma}{\xi}_{j}{\gamma}_{G,j}{G}_{k,j}+{\gamma}_{p}P+{\gamma}_{Q,1}{Q}_{k,1}+\underset{i>1}{\Sigma}{\gamma}_{Q,1}{\psi}_{0,1}{Q}_{k,1}$
| (6.10b) |

where

Gk
| = | Permanent actions |

P
| = | Prestress actions |

Qk
| = | Variable actions |

Note: The effects in each
of the above equations are always additive. If any effect is negative (that is,
would reduce the final sum), its effect is taken as zero.