Floor functionality does affect on its design.

Floor functionality does affect on its design.
No matter how simple this topic seems at the first look, but these kinds of questions comes up all the time for junior engineers and students. So clarifying every simple aspect of civil engineering is what we do in our articles.
In this article, you will understand what differences should be made in the design process of floors with different functionalities.
Generally, we can divide the floors into two categories:
1- Industrial floors :

We deign these floors to  tolerate extreme loads and we usually need to apply a larger factor of safety for them.
2- non-industrial floors :

This category includes most of our structures such as floors in residential areas, institutional buildings, retail centers and etc. In each case we need to take to important factors into our considerations. These factors include : cracking requirements and loading cases
2-1 cracking requirements
As a general rule, if the concrete slab of the floor is covered, so the cracking is likely to cause a problem. But if the concrete is exposed, such as garages, designing some Stress-relief joints is a wise choice to makes it more durable.
In some special cases, such as concrete floor of airport, we need to design them for extreme shear stress. In such cases concrete paving with the highest quality control is the best option.
2-2 loading cases
Based on the type of building, live loads are different. Table below give information about the amount of live load for each floor. These are recommended amounts of loading, however designers can change them based on the conditions.