Abstract: A method is described for surface finishing complex and simple surface shapes by abrasion of selected zones of surface, leaving contiguous zones unfinished.
Abstract: A building panel fabricated out of metal including a generally flat sheet having a plurality of parallel raised ribs which traverse a portion of its width. Side beams are provided at the ends of the ribs and affixed thereto with an elongated portion thereof resting over and affixed to the area between the rib end and the end of the panel. A center beam is located between the side beams and is affixed to the ribs with mounting openings located at points of respective overlap of the side and center beams and the ribs.