Ive got a back patio thanks to the last owner, however, he used an old laundry building to support two of the uprights/posts. Im removing the old laundry, hence a problem of replacing the two uprights has evolved. I can remove part of the laundry and put in one support at 5m (10m long roof line), replacing one support. The end support is the problem. Posted is a picture of the whole line and the problem end support. I cannot get a new/temporary support in place without the...

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