Elevated floor system, which is also termed as access floor system, is a raised structural floor that is placed on a reinforced concrete slab. The elevated floor system consists of a several panels, as shown in Figure-1, which are installed on vertical adjustable pedestals as it can be noticed in Figure-2. The pedestals are fixed on the concrete slab using suitable means for instance adhesives or mechanical fixings. Moreover, the gap between the elevated floor system and reinforced concrete slab below can be varied and ranges from 7.62cm (3inches) to 121.92cm (48inches) because the pedestals are adjustable. Furthermore, the panel of raised floor system is composed of cement or wood core clad in steel or aluminum and its size is 60.96cm by 60.96cm. Finally, the panels are compatible with several flooring finishes for example vinyl, linoleum, laminate, rubber, carpet and stone or ceramic tiles.
Advantages of Raised Floor System
This type of floor system tackles the problem of shear transfer across the diaphragm
Raised floor system are waterproofed
It leads to reduction in the cost of construction in high seismic regions
Raised floor system could serve as a high thermal mass base material for radiant heat systems which are distributed by hot air or hot water. So, Heating and cooling a building with a raised flooring system is more efficient
The concrete surface can be finished as a final floor finish as desired by sealing, polishing, stamping, or staining. Consequently, the extra cost of covering used for covering floors will no longer be needed
Acoustic isolation is another advantages offered by raised floor system.
In high wind threat areas, elevated floor system will improve the lateral resistance and durability of multistory building especially when it combined with concrete roof system
Fire is suppressed from floor to floor