Custom designed this Pergola for my concrete patio using Autocad. Cut, sanded, stained and predrilled all the pieces in my garage during the winter months. With the help of a good friend and my dad, we assemblled the Pergola in 5 hours. Later added the tumbled belgian blocks around each support column. Had a dream, thought the design out and premanufactured everthing - assembly was a snap. Very happy with the results.