13. OPTIMIZATION

CHAPTER 13 'OPTIMISATION' 18 The logic in all modules is the same: You start by defining a group or groups of members that must have the same cross-section. 1) In the " Pillars " section you start by defining the name of the group you are going to create. The group can contain one or more individual members which must have the same initial dimensions and will obey specific lower and upper bounds. After entering the name you press the "New" button to create the group and with the "Pick- Select" option you graphically select the members you want to join this group. The cross- section of the member of the first column you show will determine the cross-section of the group you create. EXAMPLE For example, if the cross-section of the first pole is 40/40 all subsequent poles must have this cross-section and the same material quality and belong to the same layer. You can choose either the physical cross-section or the mathematical member. The element type must be the same as the corresponding module you are in. OBSERVATION If you do not enter a name for your group and simply press "New" the program first puts English question marks "???" as the name and then names the group based on the cross- section of the first element you select. Of course you can modify the name of the group. So by selecting the items these appear in the corresponding list Here you can delete one or more items by selecting them (one at a time) and pressing the "Delete" button. You can also display them in the vector by pressing the "Show" button.