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OK! Next steps:
The pier arrived yesterday so the pressure is on.
Today, I have started the frame of the external rails. The support posts are 100x100 treated pine sitting in a plastic stirrup. At this stage, I am undecided about how to fix that into the concrete. By the time I have finished, it should weigh about 80 Kgs and be anchored to the shed frame itself,. So it may not be necessary.
I have made saddles into which the rails are fastened and those in turn are bolted into the shed frame. Pretty solid. The rails are a bit under 2000 long and are 70x45. To stiffen them up a bit, I will fasten a 1800 length of 25mm angle iron underneath. That should prevent any warping, I hope.
I’ll fit some cross-bracing between the end posts and that should prevent any tendency to wobble about.
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