sliding barn door designs or plans

Spitz, I built two doors 10' high by 12' wide and have not had any problem with them. I began by using 2x6 treated boards to make the top, bottom and sides. I then put 2x4 treated boards equally spaced, horizontally in the frame made by the 2x6's. I put 2x4's at a 45 degree angle in the corners. I used flat mending plates and spiked gusset plates to join the boards on both sides. You can get them from any lumber store. I then hung the frame with the hardware. After the door frame is hung and sliding good, I put on the siding which is the same steel panels as the rest of the shed, they also keep the frame from flexing. The red and blue panels on the shed are the doors.

I had a 12' high by 11' wide sliding door on my shop and it was the biggest pain in the butt I've ever encountered. It was heavy to push, and in the winter snow and ice would build up under it and freeze it shut.

I finally got tired of pouring buckets of hot water under it so I could get it open, and replaced it with a 10'X10' overhead door.