Option b): Exact calculation, valid for any kind of beam or support. In this option, the user defines the expected force to be developed by the CFRP, as well as the available length of un-cracked concrete. The software verifies, according to the characteristics of the beam/slab, if the awaited CFRP force (Nf,d) can be anchored to the length of the available un-cracked concrete surface (lb).