Steel Buildings in Europe

Title Appendix A Worked Example: Wind action on a multi-storey building 17 of 18 3 - 38 Regarding the accidental design situation, the values of the resulting pressure are given in Table A.5 for the vertical walls and the roof, and for two situations:  Opening in zone D ( c pi = +0,7)  Opening in zone A ( c pi = -1,1) Table A.5 Wind on the long side (kNm 2 ) – accidental design situation Vertical walls Roof Zone A D E F G H c pe -1,2 +0,8 -0,6 -1,4 -0,9 -0,7 c pi = +0,7 -1,77 -0,09 -1,27 -1,94 -1,52 -1,35 c pi = -1,1 +0,19 +1,87 +0,69 +0,02 +0,44 +0,61 3.6.3. Wind on the gable For wind on the gable, the structural factor is: c s c d = 0,884 Regarding the normal design situation, the values of the resulting pressure are given in Table A.6 for the vertical walls and in Table A.7 for the roof: ( F we – F wi )/ A ref = c s c d q p ( z e ) c pe – q p ( z i ) c pi where: c pe are the external pressure coefficients determined in § 3.1.1 for the vertical walls, and in § 3.1.2 for the roof q p ( z e ) is the peak velocity pressure in kN/m 2 as calculated in § 2.3 q p ( z i ) = q p ( z e ) for each strip, as stated in § 3.3.1. Table A.6 Wind on the gable – Vertical walls Zone A B C D E c pe -1,2 -0,8 -0,5 +0,7 -0,3 0 < z ≤ 10 -0,91 -0,65 -0,46 +0,30 -0,33 10 < z ≤ 15 -1,06 -0,76 -0,54 +0,35 -0,39 15 < z ≤ 20 -1,16 -0,83 -0,59 +0,39 -0,43 20 < z ≤ 25 -1,26 -0,91 -0,64 +0,42 -0,47 c pi = +0,2 25 < z ≤ 33,50 -1,37 -0,99 -0,70 +0,46 -0,51 0 < z ≤ 10 -0,55 -0,29 -0,10 +0,66 +0,03 10 < z ≤ 15 -0,64 -0,34 -0,12 +0,77 +0,03 15 < z ≤ 20 -0,70 -0,37 -0,13 +0,85 +0,03 20 < z ≤ 25 -0,76 -0,41 -0,14 +0,92 +0,03 c pi = -0,3 25 < z ≤ 33,50 -0,83 -0,44 -0,15 +1,00 +0,04