This document discusses different types of floor systems, including filler slab technology, steel beam floor systems, heated slab construction, and precast concrete units. Filler slab technology reduces dead load by replacing concrete with materials like tiles, bricks, bottles, and shells. Steel beam floors use precast concrete units on steel beams with shear studs. Heated slab construction installs heat pipes under flooring that radiate warmth evenly. Precast concrete units can be used with different beam types. Advantages include cost savings, strength, and efficiency, while disadvantages include potential rust, drainage planning, and higher initial costs.