Australia Parameters dialog

Setting	Description
Combination Factor, Psi c:	Load combinations considered in the RAM Steel Column module are based on AS/NZS 1170:2002 if Australia is the selected design code. The combinations include the consideration of the following: [1.2G, Su, Ψ_cQ] Expanded as 1.2DL + Psic * LL + Snow You can set an appropriate Ψc to be used to generate load combinations appropriately in RAM Steel Column when roof live load is considered as snow (See To specify member loads criteria ).
Beam Lateral Torsional Buckling	When loads are applied transverse to a member (typically gravity loads applied to a beam) the engineer should indicate where those loads are applied for consideration in member capacity calculations (Table 5.6.3(2) in AS 4100-98). In the RAM Manager the engineer can designate if loads applied transverse to a member are applied at the shear centre or top of section. This setting is considered only for beam design in RAM Frame and RAM Steel Beam. For columns and braces, where forces are only applied at the ends of a member, they are assumed to be through the shear center. This setting will only affect the capacity of a beam in segments in which they are not braced laterally (i.e. they are subject to lateral torsional buckling).
Residual Stress Welded Shapes	When calculating member capacity (See Section 5 of AS 4100-98) it is necessary to know the residual stresses in the section which are a function of the manner in which the section is created. For welded sections the engineer can specify the manufacturing method used. Rolled I sections are assumed to be Hot Rolled (HR) per table 5.2. Rolled tubes and pipes are assumed cold formed (CF) per Steel Designer Handbook. All welded sections must be designated as either Heavy Welded (HW)

Combination Factor, Psi c:

Load combinations considered in the RAM Steel Column module are based on AS/NZS 1170:2002 if Australia is the selected design code. The combinations include the consideration of the following:

[1.2G, Su, Ψ_cQ]

Expanded as

1.2DL + Psic * LL + Snow

You can set an appropriate Ψc to be used to generate load combinations appropriately in RAM Steel Column when roof live load is considered as snow (See To specify member loads criteria ).

Beam Lateral Torsional Buckling

When loads are applied transverse to a member (typically gravity loads applied to a beam) the engineer should indicate where those loads are applied for consideration in member capacity calculations (Table 5.6.3(2) in AS 4100-98). In the RAM Manager the engineer can designate if loads applied transverse to a member are applied at the shear centre or top of section. This setting is considered only for beam design in RAM Frame and RAM Steel Beam. For columns and braces, where forces are only applied at the ends of a member, they are assumed to be through the shear center. This setting will only affect the capacity of a beam in segments in which they are not braced laterally (i.e. they are subject to lateral torsional buckling).

Residual Stress Welded Shapes

When calculating member capacity (See Section 5 of AS 4100-98) it is necessary to know the residual stresses in the section which are a function of the manner in which the section is created. For welded sections the engineer can specify the manufacturing method used. Rolled I sections are assumed to be Hot Rolled (HR) per table 5.2. Rolled tubes and pipes are assumed cold formed (CF) per Steel Designer Handbook. All welded sections must be designated as either Heavy Welded (HW)