Geotechnical designers are being called on to provide input to the draft for the second generation of Eurocode 7 documents to ensure the standards delivered in 2020 are workable and fit for purpose.
The draft changes to EN 1990 and EN 1997-1 have been developed by the CEN T/C 250 committee and aims to enhance ease of use and achieve a higher level of international consensus that the first draft.
There is less than six weeks until the deadline to supply comments with the next draft schedule to be published in April 2018 and the final document issued in 2020. Details of how to comment ahead of the 15 January 2018 deadline are outlined in the box below.
TC250/SC7 chairman Andrew Bond has been leading the redevelopment work since early 2015 and he is calling for geotechnical engineers at all levels to review the draft.
The key changes to the EN 1990 document include removal of the need to define STR, EQU, GEO and FAT. It also allows geotechnical design to conform to the same definitions which removes the need for EN 1997 to re-define limit state expressions. In addition, the revision introduces partial factors on water pressures.
The main changes to the EN 1997-1 document are the reinstatement of the geotechnical category, reduced emphasis on quality management procedures and deferment of specification of resistance factors to EN 1997-3. The draft also omits the mega-table showing all possible design combinations.
How to comment
- Comments should be submitted via the official CEN commenting template
- Ensure comments are specific and not general comments on overall document
- Accompany comments by a proposed change with a clear explanation of the proposal
- Comments on the drafting style or background documents will not be reviewed
- Comments must be new and not resubmissions of previous comments, unless accompanied by new information