Load Combinations to AS1170.0

Verified by the CalcTree engineering team on October 22, 2024



This calculator evaluates the load combinations to AS1170.0 for ultimate and serviceability limit states, which includes the dead load, live load, wind load and earthquake load.

All calculations are performed in accordance with AS1170.0-2002.





Calculation

1. Properties

1.2 Short-term, long-term and combination factors

As per table 4.1, the factors,



${\psi }_s,{\psi }_l,{\psi }_c\text{ and }{\psi }_E$

depend on the distributed imposed actions



$(Q)$

. These values vary based on the type of imposed action, such as those applied to floors, roofs, or other structural elements. The user should select the combination factors appropriate for their design.









2. Ultimate Load Combinations

2.1 Strength,



$E_d$



As per clause 4.2.2, the basic combinations for the ultimate limit states used in checking strength shall be as follows:





2.2 Stability,



$E_{d,stb}$



As per clause 4.2.1, the basic combinations for the ultimate limit states used in checking stability shall be as follows:





3. Serviceability Load Combinations