PD 6688-1-4:2009 Background information to the National Annex to BS EN 1991-1-4 and additional guidance
When there is a need for guidance on a subject that is not covered by the Eurocode, a country can choose to publish documents that contain non-contradictory complimentary information that supports the Eurocode.
Published Document (PD) 6688-1-4 is a background paper that gives non-contradictory complementary information for use in the UK with BS EN 1991-1-4:2005 and its UK National Annex.
PD 6688-1-4 gives:
a) Background to the decisions made in the National Annexes for some of the Nationally Determined Parameters
b) Commentary on some specific subclauses from BS EN 1991-1-4:2005
c) Additional data that can be used in conjunction with BS EN 1991-1-4:2005
Contents of PD 6688-1-4: