EC3 double angle only for S235

Dear,

It seems that double angle back to back as per EC3 works only for S235? For same sections and S355 it reports slenderness class 4.

Right?

Parents
  • The design of slender double angle sections (class 4) is not implemented in STAAD.Pro as per EC3.



  • It is not a slender section. Please try with S235.

    STAAD SPACE
    
    INPUT WIDTH 79
    UNIT METER KN
    JOINT COORDINATES
    1 0 0 0; 2 8 0 0;
    MEMBER INCIDENCES
    1 1 2;
    SUPPORTS
    1 PINNED
    2 FIXED BUT FX MY MZ
    DEFINE MATERIAL START
    ISOTROPIC STEEL
    E 2.05e+08
    POISSON 0.3
    DENSITY 76.8195
    ALPHA 1.2e-05
    DAMP 0.03
    TYPE STEEL
    STRENGTH RY 1.5 RT 1.2
    END DEFINE MATERIAL
    MEMBER PROPERTY EUROPEAN
    1 TABLE LD L150X150X15 SP 0.015
    CONSTANTS
    MATERIAL STEEL ALL
    LOAD 1 LOADTYPE None  TITLE LOAD CASE 1
    JOINT LOAD
    2 FX -10
    PERFORM ANALYSIS PRINT STATICS CHECK
    PARAMETER 1
    CODE EN 1993-1-1:2005
    SGR 2 ALL
    CHECK CODE ALL
    FINISH

  • I think it's slender. If you would use the 150X150X18 instead of 150X150X15 then that double angle would be designed even with steel S355



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