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Fd.ULS 2

Fd.ULS 2

F 1d 2 Design tensile stress parallel to the grain a 1t 0.d =- a 1t 0.d = 3.54N/mm2

Design tensile stress parallel to the grain a2t 0.d = a2t 0.d = 5.24 N/mm2

F3d 2 Design tensile stress parallel to the grain a3t 0 d = —— a3t 0 d = 3.54N/mm2

Design tensile strength of the timber /t.0.d = kmod med kh ^t 0 k parallel to grain, /to.d Km,timber

i.e. the tensile strength of the timber exceeds the design stress; therefore OK

The instantaneous deflection of the joint at the SLS

The slip modulus of a connector per /

shear plane at the SLS, Kser ( pm

The equation incorporates dimension factors for Mathcad.)

The stiffness of each connection at the SLS, i.e 4 No shear planes; n connectors per shear plane; Kser.connection

The stiffness of the joint at the SLS,

Kser.joint

(Figure 10.24)

The instantaneous deflection of the joint at the SLS, 5inst kg/

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