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1. Material and nail properties

Table 1.3, strength class C18 (BS EN 338:2003(E), Table 1)

Characteristic compression strength f 1c 0 k = 18 N/mm2 parallel to the grain, f 1c 0 k

Fifth-percentile modulus of elasticity parallel to the grain, E 10.05

Mean value of modulus of elasticity parallel to the grain, E 10.mean

Table l.l0, 12-mm-thick Finnish 'combi' plywood Characteristic compression strength, f 2p c 0 k = 21.5 N/mm2

Mean value of modulus of elasticity parallel to the grain, E2p.0.mean

Fifth-percentile modulus of elasticity E2p 0,05 = 0.75 ■ E2p.0.mean parallel to the grain, taken to be 0.75 E 2p.0.mean, E 2p.0.05

Shear modulus of the panel, G2p mean G2p mean = 589 N/mm2 Mean value of modulus of elasticity of the section E0.mean

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