9. Anchorage zones (end block design) 10. Continuous beams (secondary moments, moment redistribution) 11. Composite construction (precast + cast-in-place) 12. Two-way slabs (banded tendons, equivalent frame method)

| Book | Author | Year | Code | |-------|--------|------|------| | Hormigón presforzado (Spain) | José Calavera | 2018 | EHE-08 / Eurocode 2 | | Concreto presforzado (Mexico) | Óscar M. González Cuevas | 2015 | ACI 318-11 + NTC | | Diseño de estructuras de concreto con presfuerzo | R. Park & T. Paulay (translated) | 2005 | ACI 318 (updated appendix) |

Why? Because prestressed concrete is the backbone of modern bridges, parking garages, high-rise buildings, and industrial floors. Mastering its design requires a deep understanding of material behavior, losses, anchorage zones, and code compliance—precisely what Nilson delivers.

| User Intent | Expected Edition | Actual Status | |-------------|------------------|----------------| | Latest ACI code (ACI 318-19 or 318-23) | 6th or 7th English ed. translated | Not officially translated yet | | Most complete Spanish edition | 4th English ed. → 2nd Spanish ed. (2000) | Widely available in print, PDF exists from scan | | Free access | Any version | Copyright protected; Legal PDFs only via purchase or library |

: The last Spanish translation corresponds to the 4th English edition (published 1992, Spanish ~2000). The English 7th edition (2021) has not been translated. Therefore, an “updated” Spanish PDF does not exist in a legal, modern sense—only scanned copies of the 2nd Spanish edition.

: ACI 318-89 (obsolete for current practice), prestressing steel properties, loss calculation tables (approximate and refined methods).