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AS 3600-2001 default load combinations

This section provides information on the default load combinations (technically, loading combinations) that RAM Concept creates when you start a new AS 3600-2001 file. The purpose and origin of each load combination are given. You can remove or modify any of these load combinations. You can also add load combinations. The load combinations are from AS/NZS 1170.0 incorporating amendments 1-5, unless noted otherwise.

RAM Concept uses loading types to determine the appropriate factors in some load combinations. For the short-term case the factor ψ will be equal to 1.0 for Live (Unreducible) and Live (Storage) and 0.7 for all other live loadings. For the long-term and combination cases, the factor ψ will be equal to 0.6 for Live (Unreducible) and Live (Storage), 0.4 for Live (Reducible), and 0.0 for Live (Roof).

Note: Some load combinations in mat (raft) files are of the Lateral Group type and use a "Zero-Tension" analysis. Since a load combination using a "Zero-Tension" analysis does not use Alternate Envelope Factors, then such load combinations in mat files have been expanded into multiple load combinations. In some cases, the assumption that all gravity loads act in the same direction have been used to keep the number of load combinations to a minimum. See Specifying Load Combinations for further description.
All Dead LC
Initial Service LC
Service LC: D + ψ L
Service LC: D + ψ L + S
Max Service LC: D + L
Ultimate LC: 1.35D
Ultimate LC: 1.2D + 1.5L
Ultimate LC: 1.2D + ψ L + S
Service Wind LC: D + ψ L + W
Service Seismic LC: D + ψ L + E
Ultimate Wind LC: 1.2D + ψ L + W
Ultimate Seismic LC: D + ψ L + E
Sustained Service LC
AS3600 / AS/NZS 1170.1 live load factors
Parent topic: AS 3600-2001 Design
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