Steel Buildings in Europe

Title APPENDIX B. Worked Example: Wind action on a single-storey building 7 of 11 3 - 52 Trough Trough - 0,9 + 0,2 - 0,8 + 0,2 - 0,5 - 0,9 + 0,2 Ridge 1,6 m 4 m 4 m b = 60 m Wind d = 32 m - 0,3 + 0,2 - 0,5 H H G F F H - 0,9 I Figure B.5 c pe,10 for zones F, G, H and I with wind on long side 3.2. Internal pressure coefficients c pi 3.2.1. Persistent or transient design situation The doors are assumed to stay shut during severe gales: c pi = + 0,2 And c pi = -0,3 with reference height for the internal pressure: z i = z e = h = 8 m EN 1991-1-4 § 7.2.9(6) § 7.2.9(7) 3.2.2. Accidental design situation  A door opens upwind (wind on gable): this face is dominant and area of the openings at the dominant face = 3  area of the openings in the remaining faces: c pi = 0,90 c pe c pi = 0,90  (+0,7) = +0,63  A door opens downwind (wind on long side): this face is dominant and area of the openings at the dominant face = 3  area of openings in the remaining faces. EN 1991-1-4 § 7.2.9(3) § 7.2.9(5)