Info

Deformation factor for timber kdef.w = 0-8 at service class 2 conditions, kdef.w

Deformation factor for OSB at kdef.f = 2.25 service class 2 conditions, kdef.f

6. Geometric properties

Instantaneous - transformed section properties:

Transformed web thickness (into OSB), bw.tfd bw.tfd = b

Area of flange in compression, Aef.f.c = bef.c ■ htf

Area of flange in tension, Aef.f.t Aef.f.t = bef-t ■ hbf

Area of web, Aef.w Transformed area, Aef

First moment of area of the section about the top face:

bw.tfd = 123.68 mm Aef.f.c = 7.15 x l0-3m2 Aef.f.t = 6.95 x 10-3 m2 Aef = 0.03 m2

Neutral axis depth from the top face, yt yt =

0 0

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