Jack Beams are used to make economical as well as safe approach for creating longer bay length when large unobstructed space, is required. Common bay lengths (5,6,7,8,9 & 10) can be doubles with the use of jack beam making it possible to have 12,15,16,18 and 20 m clear bay length in areas where unstructured space is required. For example, if the customer specified to have 10 m bay lengths instead of the more economical 8 m bay length, jack beams will be used in the interior of the building to make that possible. Jack beams may also be used on the exterior walls in the same way.