My son and I wanted to build a soccer goal big enough for us to play with. I found several plans for goals for small children.
Lowe's Project http://www.lowes.com/creative-ideas/kids-and-baby/backyard-soccer-goal/project
This old House Project http://www.thisoldhouse.com/toh/how-to/intro/0,,2...
I liked the concepts, but they were too small. This Instructuble shows how to build something large enough for kids and adults to play backyard soccer. Be careful though, this goal is a kid magnet. The weekend that we built it, the neighborhood kids had to try it out.
I hope you enjoy it.
Step 1: Parts inventory
The cost turned out to be more than I originally budgeted, but it is much larger than the commercial goals that you can find at sporting goods stores.
All items can be purchased at the local hardware store. See pictures for actual item numbers and prices.
Step 2: Scale up the design
Some of the plans were for a 4 ft tall goal. I wanted 6 ft tall, so I had to work with scaling it up. Anyone remember ratios and Pythagorean Theorem?
With a 6 ft tall goal the depth is 4.5 ft and the back braces are 7.5 ft long. The width is 10 ft.
Step 3: What goes where? Decide how to cut your pipes.
I liked a braced design. I used the PVC 10 ft pipes. Seven of them. Then some Tee and Elbow Joints. The pictures show the part numbers and placement. For example, in a 10 ft pipe, I can get one 6' ft piece plus to (2) 2 ft pieces. There was some unused pipe, but that was the cost of doing business.
The nice guys at the hardware store saved me a bunch of time by doing the the pipe cuts for me when I bought them.