Steel Buildings in Europe

Title APPENDIX A. Worked Example: Snow load applied on a single-storey building 4 of 8 3 - 39 3.3. Lower roof: duo pitch roof abutting to taller construction works Angle of the roof (10%):  = arc tan (0,10) = 5,7° 0    30°  EN 1991-1-3 § 5.3.6(1)  Persistent /transient design situations - Case (i): Undrifted load arrangement   1 (5,7°) = 0,8 s = 0,8  0,65 = 0,52 kN/m 2 0,52 kN/m 2 0,52 kN/m 2 Figure A.4 – Undrifted snow load arrangement on the lower roof in persistent design situation - Case (ii): drifted load arrangement   1 (5,7°) = 0,8 s = 0,8  0,65 = 0,52 kN/m 2  2 =  s +  w  where:  s is the snow shape coefficient due to sliding of snow from the upper roof. For   15°:  s = 0  w is the snow load shape coefficient due to wind  w = ( b 1 + b 2 ) / 2 h with:  w    h / s k b 1 = 10 m b 2 = 40 m h varies between 3 m at ridge to 4,25 m at eaves  = 2 kN/m 3