This pergola has been constructed with the 90 X 35 battens spaced at 40mm so that there is a very large amount of shade underneath. The large 240 X 45 beams overhang the side posts as well as the battens and the 140 X 45 rafters are spaced at 300mm. The pergola is 2.8 meters high and large 112 X 112 posts balance the structure so it doesn't look top heavy.