Height is half the overall diameter. As shown, proportions for the 18 ft dome made from 2 x 4 construction. A Vertical Base Option can be added to this dome, or conventional riser wall built with traditional framing techniques. With 8 equal sides, the structure will fit nicely on the Octagon Deck. Here are some free Octagon Deck plans from deckplans.com
HOME | RCO Dome