Contents 1 General Provisions… …(1) 2 Terms and Symbols............................................(3) 2.1 Terms…(3) 2.2 Symbols…(6) 3 Materials…(25) 4 Basic Design Requirements………(29) 4.1 Design Principles…(29） 4.2 Design Indices.......(29) 4.3 General Requirements for Detailing..................(38) 4.4 Allowable Values for Deformation of Structures and Structural Members...................................(39) 5 Action and Action Effect Combinations..................(43) 5.1 General Requirements...............(43) 5.2 Wind L0ads…(44) 5.3 Seismic Actions…….…(46) 5.4 Snow Loads (49) 5.5 Requirements of Action Effect Combinations ......(53) 6 Light Weight Steel Building Structures with Frame Systems…(55) 6.1 Structural Layout.....(55) 6.2 Structural Analysis............ …(57） 6.3 Beams…(57） 6.4 Columns …………(64) Contents 1 GeneralProvisions………………………………………… (1) 2 TermsandSymbols ……………………………………… (3) 2灡1 Terms ………………………………………………… (3) 2灡2 Symbols ……………………………………………… (6) 3 Materials ………………………………………………… (25) 4 BasicDesignRequirements …………………………… (29) 4灡1 DesignPrinciples …………………………………… (29) 4灡2 DesignIndices ……………………………………… (29) 4灡3 GeneralRequirementsforDetailing ……………… (38) 4灡4 AllowableValuesforDeformationofStructuresand StructuralMembers ……………………………… (39) 5 ActionandActionEffectCombinations ……………… (43) 5灡1 GeneralRequirements……………………………… (43) 5灡2 WindLoads ………………………………………… (44) 5灡3 SeismicActions …………………………………… (46) 5灡4 SnowLoads ………………………………………… (49) 5灡5 RequirementsofActionEffectCombinations …… (53) 6 LightWeightSteelBuildingStructureswithFrame Systems…………………………………………………… (55) 6灡1 StructuralLayout ………………………………… (55) 6灡2 StructuralAnalysis ………………………………… (57) 6灡3 Beams ……………………………………………… (57) 6灡4 Columns …………………………………………… (64)