Bracing a deck
Many houses that I visit have decks that sway uncomfortably when walked on, especially when a portion of the deck is cantilevered. The drawing shows a method of stiffening a deck’s frame that I’ve used for 15 years with good results. The diagonals shown in the drawing are rows of solid blocking, the same depth as the joists. No deck I’ve built using this system has had the slightest wiggle. And the method works equally well for retrofits.
Felix Marti, Ridgway, CO