As stated in 4.3, in order to verify the ultimate and serviceability limit states, each design effect has to be checked and for each effect the largest value caused by the relevant combination of actions must be used.

However, to ensure attention is primarily focussed on the EC5 design rules for the timber or wood product being used, only the design load case producing the largest design effect has generally been given or evaluated in the following examples.

Example 12.8.1 At the ULS a bolted connection is subjected to a design moment of 3.25 kN m and a design vertical action of 10.05 kN as well as a design horizontal action of 1 kN applied through the timber member arising from combined permanent and short-term loading, as shown in figure E12.8.1. The connection comprises two 12-mm-thick steel side plates and an inner timber member of strength class C24 to BS EN 338:2003, connected by 12-mm-diameter bolts. The bolts have a characteristic strength of400 N/mm2 and the tolerance on the bolt hole diameter in the steel plate is 1 mm. The joint functions under service class 2 conditions.

On the understanding the strength of the steel plates and the bending strength of the timber member are satisfactory, check the adequacy of the connection.

Design vertical action = 10.05 kN

Design vertical action = 10.05 kN

All dimensions are in mm

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