N° 133.1980. Seismic Design of Concrete Structures - Preliminary Draft of an Appendix to the CEB-FIP Model Code

This document sets down minimum design requirements to be met when dealing with seismic situations, that is, situations in which the earth quake action is considered as the leading action in conjunction with o­ther permanent or variable actions . 

The use of the structure (ex: office , storage , parcking, etc.) and its climatic environment (ex: temperature , snow , etc .) dictate the num­ber and the intensity of the other actions that must be accounted for concurrently with the earthquake action. 

The document is issued with reference to reinforced and prestres­sed concrete buildings for normal use, having structural resisting sy­stems as described in Chapter S.3. 

This recormnendation is principally intended for new constructions ; however , it contains also (Sect. 11.11) some general criteria that shal be of guidance for the repair and /or strengthening of exist ing structu­res provided these latter fall into the structural types covered by the code . 

For structures having special characteristics, from the point of view of their func tion and/or their structural type (ex . po tential ly dangerous industrial installations, bridges, dams, water towers, etc.) this standard must be complemented with adhoc requirements and provisions. 

The present text of the code conforms to the level, partial coef­ficients, format of FIP-CEB Model Code for Concrete Structures , Vol . II , with the direct purpose of extending its application to the seismic de­sign situation. 

Its basic concepts, however, are expressed in the same general term as required for more advanced reatments ofreliability (leve ls II , III), so as to allow, with a future implementation, a straight forward applica­tion of these methods to the seismic design situation .