Plus rebar and concrete.
Lite weight concrete floor.
For the second story a foamed type of lightweight concrete is being used over plywood for sound absorption between floors.
To make this concrete combine 8 parts cement sand and lightweight aggregate with 5 parts water.
Lightweight concrete may not be as structurally sound as traditional concrete but it can be useful in some projects where weight is more important than strength.
A structural light weight concrete mix has a density of about 105 pounds per cubic foot compared to normal concrete with a density of 150 pounds per cubic foot.
However the successful outcome of any floor be it normal concrete or lightweight concrete is determined by taking into account the different concrete curing processes to reduce the risk of floor failures.
The other option is a wood structure with assumed 2 layers of 3 4 subfloor vapor barrier and then 2 3 of light weight concrete.
These floors are constructed for different purposes but the reduction of dead loads on the structure is.
An example is lite deck which costs around 3 25 sqft of floor surface for the form.
Please send us information regarding the proper chemical to use to achieve the proper mix for the lightweight concrete.
In addition it seems that the long term costs associated with normal weight concrete play a big role in buyer preferences.
Lightweight concrete floor provides more efficient strength to weight ratio in concrete floor systems when compared to other conventional concrete floor systems.