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Deformation factor for timber at kdef.w = 0.8 service class 2 conditions, kdef.w (Table 2.10 (EC5, Table 3.2))

Deformation factor for plywood at kdef.f = 1.0 service class 2 conditions, kdef.f (Table 2.10 (EC5, Table 3.2))

The quasi-permanent factor for f2 = 0.0 roof areas,

6. Geometric properties

Instantaneous - transformed section properties:

Effective web thickness, bw.eff bw.eff = 4 • bw bw.eff = 188 mm

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