Span Chart for Ipe Decking Nominal DimensionFinish DimensionJoist Spacing 1x43/4" x 3 1/2"16" 1x63/4" x 5 1/2"16" 5/4x61" x 5 1/2"24" 2x61 1/2" x 5 1/2"32" Note: Ipe Is a very strong material. The joist spacing shown is very conservative and designed to pass most...