I'm a first-time poster, so bear with me...I'm trying to find (or design) a pergola for my patio that has joists (I think that's the part) that have a slight inverted curve, kind of like a Shinto gate that you see at the entrance of a Japanese temple. I have a hard time drawing 3-dimensionally, so my ideas are difficult to convey to my frustrated landscaper. Does anyone have any ideas about where I can find this type of design on the Internet or in a book? I'd be eternally grateful for any ideas you all might have for me. Thanks in advance!