I have a rapid and accurate method for assembling any wall, floor or roof that uses standard dimensions. It consists of a jig, which is simply a 2×4 notched on 16-in. or 24-in, centerlines to receive the framing members. Two such jigs are handy, and for large-scale work, four can help. To use, just slip one member at a time into the jig until everything is in place, then nail. No measuring is required except for cutting pieces to length. It really helps on long runs that need to be sheetrocked, covered with plywood, etc. For trusses, it means that everything can get assembled via the jigs, the plywood started and then the jigs pulled up. No nails to pull.
I put together a 1,000-sq. ft. workshop with this method—mostly by myself and on evenings and weekends. It really works.
M.R. Havens, St. Albans, WV