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VK STEEL DESCRIPTION AND ANALYSIS OF STEEL CONSTRUCTIONS 4. In the P field (kN or t) type the value of the concentrated dead load (i.e. a roof-support beam’s load in case you are not going to describe roof-support beams). In the α field (m) type the measurement of the distance between the member’s start node and the loads application Point. 5. Choose the load’s axis, if it has not yet been chosen (this axis is usually the global 2 axis). 6. Press [UPDATE]. 7. Follow steps 1-7 for other loading cases except for L case 2 : Earthquake Y and the L case 3 : Earthquake X which the programme will automatically calculate, considering all information given in Parameters >Load Combinations. 8. Press OK to close the dialogue box. IMPORTANT Units must agree with the members’ dimensions set chose regulation. Therefore, if we have chose EC3 (EUROCODE) all loads must be introduced in kN while for DIN (Allowable Stresses’ Regulation) loads must be introduced either in kg or in t. COMMENTS For a load to be applied, the user must firstly determine the appropriate loading combinations and then check the Loading case cell for non-zero safety factor. If, for example, there are no seismic loading combinations (the 2nd and 3rd loading combinations to which the loading cases 2 and 3 are participating along with their corresponding safety factors) the seismic loads are not taken under consideration. Notice the difference between the global and the local system of axis. For example, a column’s x – x axis of the local system concurs with its length axis and it is vertical to the global x – x axis. Consequently, the load that will be applied on the local x – x axis of the column will be axial. NOTE: Through the SECTION PROPERTIES tool bar you can check the loading application’s integrity after members are introduced. Through the same toolbar you are also able to modify them. 206 CHAPTER 9 ELEMENTS’ PROPERTIES “TOOLBARS”