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EN 1993-6 gives principles and application rules for the structural design of crane runaway beams and other crane supporting structures including columns and other member fabricated from steel. This part is intended to be used with Eurocode EN 1991 -1 and it covers overhead crane runaways inside buildings and outdoor overhead crane runaways.
Steel column members must be verified as adequate to prevent buckling after axial and moment requirements are met. There are currently two common methods of steel design: The first method is the Allowable Strength Design (ASD) method. The second is the Load and Resistance Factor Design (LRFD) method. Both use a strength, or ultimate level ...
The slenderness ratio is an indicator of the specimen's resistance to bending and buckling, due to its length and cross section. If the slenderness ratio is less than the critical slenderness ratio, the column is considered to be a short column. In these cases, the Johnson parabola is more applicable than the Euler formula. [5]
A reinforced concrete column is a structural member designed to carry compressive loads, composed of concrete with an embedded steel frame to provide reinforcement. For design purposes, the columns are separated into two categories: short columns and slender columns.
In practical design, it is recommended to increase the factors as shown above. The following assumptions are made while deriving Euler's formula: [3] The material of the column is homogeneous and isotropic. The compressive load on the column is axial only. The column is free from initial stress. The weight of the column is neglected.
Allowable Stress Design philosophy was left unsupported by AISC after the 9th edition of the manual which remained an acceptable reference design standard in evolving building codes (e.g. International Building Code by the International Code Council). This presented problems since new research, engineering concepts and design philosophy were ...