Utilizing proven materials that have long been used by the construction industry, the GIRDER-SLAB system is designed by the owner's architect and structural engineer, and is available competitively from the builder's customary steel fabricators. The D-BEAM girder is manufactured by local steel fabricators as part of a complete structural steel package. The low floor to floor height system greatly improves construction operations and the ability to meet critical deadlines, even in cold weather, for mid and high-rise residential structures. (less)