See how to design a Deck Joist to ASD or LRFD requirements using ClearCalcsâ Wood Beam: Deck Beam Preset calculator.Download this example as a PDF: Deck Beam [US Wood Beam]This design example is part 2 of 4 in our âDeck Design Series.â For more information on how to use ClearCalcs to design a deck,click here.Please be aware that this example should not be used as advice, recommendations, or instructions for engineering design and should only be followed as a guide to using ClearCalcs.