Eurokod, grund

1.1 Scope of prEN 1995-1-1 (1) prEN 1995-1-1 gives general design rules for timber structures. (2) prEN 1995-1-1 also gives specific design rules for buildings and timber civil engineering works. 1.2 Assumptions (1) The assumptions of EN 1990 apply to this document. (2) prEN 1995-1-1 is intended to be used in conjunction with EN 1990, EN 1991 (all parts), EN 1998 (all parts) when timber structures are built in seismic regions.

1.1 Scope of prEN 1991-1-7 (1) prEN 1991 1 7 provides actions and rules for safeguarding buildings and other civil engineering works against identifiable accidental actions. NOTE 1 Identifiable accidental actions include impact from vehicles and internal explosions. NOTE 2 Rules on impact from vehicles travelling on a bridge deck are given in prEN 1991 2. (2) prEN 1991 1 7 also covers actions and rules for tying systems and key members; information on risk assessment; dynamic design for impact; actions for internal explosions; actions from debris. 1.2 Assumptions (1) The general assumptions of EN 1990 apply to prEN 1991 1 7. (2) prEN 1991 1 7 is intended to be used in conjunction with EN 1990, EN 1991 (all parts) and the other Eurocode parts for the design of structures.

(1) This document is applicable to the seismic design of on-ground and elevated silos, on-ground, elevated and underground tanks, above-ground and buried pipeline systems, towers, masts and chimneys and ancillary elements attached to the aforementioned structures or in industrial facilities.
(2) Unless specifically stated, EN 1998-1-1:—2, and EN 1998-5:—4 apply.
(3) prEN 1998-4 is applicable in complement to the other relevant Eurocodes.
NOTE This document contains only those provisions that, in addition to the provisions of the other relevant Eurocodes, are used for the design of new structures, as listed in (1), in seismic regions. prEN 1998-4 complements in this respect the other Eurocodes.
1.2 Assumptions
(1) The assumptions of EN 1998-1-1:—2, 1.2, are assumed to be applied.
(2) It is assumed that the changes in a) and b) will not take place during the construction phase or during the subsequent life span for all structures covered by prEN 1998-4, unless proper justification and verification is provided:
a) substantial changes in the structural systems, supporting structures or attached ancillary elements listed in 1.1 (1);
b) substantial changes of masses or mass distribution. This includes, in particular, changes in production, such as specific changes of filling loads, filling states and ancillary elements.