Hi everyone, Just signed up and this is my first post. I've taken on a renovation so suspect I'll be posting a lot on the future! I hoping someone can give me their thoughts on the best way to support my pergola posts. I am building a pergola (and deck and bbq etc) over a concrete slab. There are 4 posts, 2 of which sit on the slab and I will be securing them with 150x150mm bolt down post supports and through bolts to anchor them to the slab. But the other two sit over a small run of mud alongside the slab. Pics here - I guess I have three options that will vary based on cost and practicality. 1) To fill the entire are with concrete which in total is 0.72m3 so that's a lot to fill, and then use the post bolt downs. 2) To section off two areas where the post will sit (as apposed to the entire space) and fill those bits with concrete and use the post bolt downs. 3) to buy longer 3.6 m posts, and sink 1.2m into the ground with a concrete base but that would mean trying to source 3.6m or higher 150x150mm posts which are very difficult to get hold of at the mo and I have 4 pc 150x150mm x 3m posts arriving tomorrow. Any thoughts on what is best to do would be much appreciated Matt.