Floor systems with cold rolled profiles are used for a longer time. Advantages of this system: light weight and no barriers to pipe work. However, this system also has disadvantages; there is a lot of time required for finishing work. Finishing the underside is often done with drywall. Due to the fire protection a double layer of drywall is required. With under suspended concrete the fire safety is more than enough and there is almost no finishing work required. This makes the floors in one step fire safe and almost no finishing work. The destructive test showed that the maximum permissible weight is more than enough.
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