Based on the Results of the Studies, Its Clear that Due to the Special Composition of Fiberglas Reinforceement, The Design with Its Last a Much Longer Period of Time Designs with Steel Reinforceement. The Reason for this is the Irreversible Process of Steel Rust, from Which The Reinforcement is Made and at a ceretain moment the ned for repair work arises, or ifstruction is not subje CT To Restoration, Work on Dimantling the Structure Entirely.