What Causes a Deck to Collapse?

Decks look like simple structures, but they're a safety risk if they're improperly built or poorly maintained. To prove this point, metal connector manufacturer Simpson Strong-Tie built two similar-looking decks at the Chicago DeckExpo this past fall, one that met code requirements and one that didn't. After comparing the structural differences between the two decks, SST engineer Scott Fisher demonstrates what can happen when deck connections fail catastrophically.