So here is the monster I just pulled of the 60" loom at school--fully 60" wide, about 5 yards long (maybe a little less), 1440 warp ends, 24 e.p.i., 2/8 cotton. The weft is a polyolifin, and for the most part it's plain weave. However, I'm doing a spaced Monk's Belt pattern and I'm going to use the overshot cord to pull the piece in as tight as possible. Then I'm going to steam it for an hour to set the pleats, pull out the overshot cords, and voila! Pleated woven fabric! The heat sets the polyolifin into a new shape permanently--very fun. If anyone wants the draft, I'll try to write it out and post it. I'll also try to show off the finished product.
And all I have to say about the 60" width is it's very hard on the back! Ow! I'll stick to my 45" thanks.