10C. DIMENSIONING PART 3/4

CHAPTER 10C 'DIMENSIONING' 6 1.1.1 Procedure for sizing a layer STEP 1 : For each layer that the designer has created, e.g. Steel Beams, and for each different cross- section used in this layer, the maximum and minimum values of each of the 175 combinations of external loads and for each of the 6 intensive quantities ( Mx, My, Mz, Qx, Qy, Qz , 6 columns in the dialogue box) are calculated, as well the values of the other intensive quantities corresponding to this combination (the 12 rows in the above dialogue box). This results in 2 sextets for each intensive quantity (one for the maximum and one for the minimum value). In total for all 6 intensities there will be 2x6=12 hexagons of . In the above example, for the members of the Steel Beams layer in which the IPE 100 cross- section has been used, the maximum axial force (First Column N and first line Max N) developed in member 39 has a value of 6.06 kN, it was obtained from the combination 39 and the other intensive quantities of this combination are those indicated in the first line. Min N was developed in member 155 from combination 159 and the remaining intensive magnitudes, are those shown in the second line. Similarly for the moment My, the max My was developed in member 157 by combination 189 and the remaining intensive magnitudes of this combination are shown in the corresponding line. The min My was developed in member 90 by combination 192 with the corresponding intensive magnitudes shown in the corresponding line. The checks therefore, where axial N plays a decisive role, will be performed with the sixes obtained from combinations 105 and 159. Similarly, the checks where the decisive role is played by the moment My will be carried out with the above hexagons obtained from combinations 189 and 192. The same applies to the other 5 intensive quantities.