THe advantages of beam and block floor system are :

-A cost and time effective means on constructing domestic ground floor
-Quality controlled factory manufacture of components
Simple site assembles with the aid of a mobile crane to host the beam
-Potential to span over unsound infilling common to slopping sites
-Application over movable subsoils such as shrinkable clay
-Suitability where ventilation uver the ground floor is required to dilute intrusne gases