The shade structure is built somewhat like a big top tent. There is a large centre pole and six outer posts arranged around the centre pole. The centre pole and outer posts are supported by guy lines that also support the parachute once it is draped over the frame. You'll need to know or learn some knots in order to attach the guy lines correctly.
The centre pole is made from two 6' 1/2" steel pipes. I went with two segments of pipe and a coupler because they will fit in our van more easily than one 12' post or pipe. The outer posts are 8' 4x4s and just fit in our van. The (optional) flag pole on the roof can also be attached with another pipe coupler.
Like any good Burning Man shade structure, all the rope and posts are secured to the ground with rebar.
My cheesy Inkscape-drawn plan is below. For the original size image see here