Avoid a bouncy, soft deck. The decking span you choose will effect the feel and potentially the safey of your deck.
So read on and learn a little bit about what affects the strength of your decking - like material and joist spacing.
Your selection of decking material will determine the maximum spacing
of your joists. Some species of wood are stronger than others so refer
to the Decking Span Table below before going to the Deck Joist Span Table.
Don’t be afraid to go to use a shorter span if you are unsure. It’s
better to build a deck that is strong than bouncy and unstable.
How to interpret the chart
Don’t use a board any smaller than what is recommended for that spacing
for that species. So, for 24 o.c. if you use cedar, it can’t be smaller
than a 2x6, Hemlock, can’t be smaller than 5/4x6.