We have chosen to extend our house with an overhang, the original idea was to make it cantilevered. That wouldn't have posed any major problems, but it looks nicer with a column and it's a bit easier to calculate the roof.

However, I have no idea how we should construct this column, it should preferably be round but square works too. I guess it would be possible to cast it on-site or brick it. Could steel or wood be an option? It doesn't seem like there will be any major loads on it.
The column will be about 470cm high 3D model of a house extension with a green roof and a new column by the entrance, showing a balcony with railings and staircase.
 
Someone needs to calculate that.
It's not possible to answer based solely on such an image.
 
I thought that it is possible to answer generally what the best solution will be, I am not looking for an exact dimension. I have roughly calculated the loads from the overhang, floor, and roof which came to about 56KN, and would guess it would approach double with the walls.

I am really an amateur in this context and suspect that the loads will be significantly larger, but according to Moelven, I could manage with a 160x160 laminated timber pillar. It doesn't feel likely, but what I wonder is which materials I should focus on so I can contact a supplier for calculation help.
 
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