Span indicates how far it is between supporting columns, walls, beams, etc., and depends on the type and size of lumber used. I would suspect you have a 2-by-8-inch floor joist that is over 14 ...

Baltimore, MD – Bison Innovative Products, in collaboration with DAP Global Inc., expands its outdoor living space offerings with the launch of the Level.Up Adjustable Deck Pedestal Joist ...