Most of what kelowna says stands accurate.
Yes, for concrete and prestressed concrete it is EHE 2008 what is standing. For most everything else in building construction it is the "Código Técnico de la Edificación", acronym CTE, that has been revised a number of times since first issued in 2005. There's also a separate seismic (building) code called NCSE-02 (sometimes also called NCSR-02, the name with which it was first issued).
Highway and rail bridge, road construction specs, water supply have separate codes. I do not practice in this area so better refer to some proper link for that.
All these enact -make mandatory- by reference some of the UNE codes, issued by the normalization organization AENOR. Most of these are close portraits of their ISO counterparts, more rarely ASTM or other.
Respect Eurocodes, as of now the process of integration is mainly apparent in some incorporated sections within the EHE 2008 code and whatever they have put in that intent within the CTE. When enforceable for practice, they will be issued as mandatory regulations in the BOE. It is my understanding that Eurocodes areneither mandatory now, nor valid as proof of a correct design by spanish regulations except by the general exception clause made by CTE on that the designer may use alternative methods of design that warrant equivalent standards of safety and serviceability those than mandated by the code. This for sure would be the normal understanding for compliance with a modern set of europeans codes like Eurocode.
Basically, for buildings you find loads in a section of CTE, rules for foundations, masonry, steel and wood design in CTE and for concrete of every kind in EHE.
Now some links that give direct access to the documents:
CTE
EHE 2008
List of standing legislation for Roadworks
Aseismic Construction NCSE-02 (or NCSR-02)
Roadway Bridges IAP-98
Aseismic Bridges NCSP-07
Railway Bridges IAPF-07
Recommendations for steel highway bridges
Recommendations for composite highway bridges
mine the Ministerio of Fomento site for further info, or ask for something specific I might add.
