In the 1960's & 1970's GRANCO Steel manufactured permanent steel decking which combines forms & reinforcement (cofar), raceways (electrical or HVAC) that are integral with the floor, roof decking, and similar products. The company has been out of business for many years. However, from time-to-time detailed technical data about these products is useful for Engineers working on existing structures. For the benefit of those needing this information the "1969 GRANCO Floor/Roof Catalog" and available "1975 GRANCO Cofar Floor/Roof Catalog Extracts" are posted (.pdf format) for download at www.slideruleera.net
