Hi all, I am currently being kept awake at night from stress over a pergola I am building for the in laws. The pergola is freestanding and measures 4.7mx3.3m. The stress I am referring to stems directly from one component of the structure - the back beam of the pergola is treated pine 290x45 and is supported by three posts...which is fine. However, the front of the pergola is the same but only supported by two posts - now I've checked out the posts and attached the beams and although it...

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