I have been searching all over the place for a particular set of arbor building plans. I originally found the style on an internet site for Nantucket Post Cap Company. It is the Quidnet arbour (Grey Lady). It has a circular shaped top that includes the gates. The "beams" that form the arched top and the top of the gates is quite thick and heavy, probably about six inches thick. Can you help? Do you have access to this type of plan? HELP - it is a beautiful design. One that I have my heart ser on making.