Steel Buildings in Europe

Part 3: Actions 3 - 18 Table 7.1 Snow load shape coefficients Angle of pitch of roof  0°    30° 30° <  < 60°   60°  1 0.8 0.8 (60 –  )/30 0  2 0.8 + 0.8  /30 1.6 - These values  1 and  2 apply when the snow is not prevented from sliding off the roof (no snow fences or other obstructions like parapets). If obstructions exist, the snow load shape coefficient should not be reduced below 0.8. The snow load shape coefficient that should be used for monopitch roofs is shown in Figure 7.1, where  1 is given in Table 7.1. The load arrangement should be used for both the undrifted and drifted load arrangements.   1 (  ) Figure 7.1 Snow load shape coefficient – Monopitch roof The snow load shape coefficients that should be used for pitched roofs are shown in Figure 7.2, where  1 is given in Table 7.1. Case (i) corresponds to the undrifted load arrangement. Cases (ii) and (iii) correspond to the drifted load arrangements.      0,5     )               )       1  2 (i) (ii) (iii) (i) Undrifted load arrangement (ii) and (iii) Drifted load arrangement Figure 7.2 Snow load shape coefficient – Pitched roof