Here the nearly finished under frame can be seen complete with the newly installed 'Noggins' . The 'Noggins' brace the substantial main joists together and further prevent any possibility of any side to side movement.

99% of the strength and rigidity of a deck lies in the supporting under frame. Reducing cost at this stage by specifying lower quality materials or less robust construction design and methods will always create future life span problems

The more rigid the frame the longer the durability and life span of the deck. A rigid structure has a far greater comfort factor as a usable seating area as flexing and general sideways movement is totally absent.