Multiple Shear Plane Connections

Where a connection involves multiple shear planes and the connected members are at varying angles to each other, it is not possible to directly apply the joint strength equations given in Tables 10.2 and 10.3.

For such situations, the guidance in EC5, 8.1.3(1), is that the resistance of each shear plane is derived on the assumption that the shear plane in the connection forms part of a series of three-member connections and the connection strength is derived by combining the strength values of those failure modes that are compatible with each other. EC5 requires that failure modes (a), (b), (g) and (h) in Table 10.2 or modes (e), (f) and (j/I) in Table 10.3 must not be combined with the other failure modes.

Using this approach, to evaluate the strength of each shear plane in a multiple-plane connection, three-member connections are formed by working from one side of the

Member 3 Members 2 Shear plane (x) Shear plane (y)

Member 3 Members 2 Shear plane (x) Shear plane (y)

Members 1

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