6. General stability of surface foundations
Checking the general stability of the site is often neglected, for more or less good reasons, when dimensioning shallow foundations.
While it is imperative to verify this stability prior to construction, during construction and in the operational phase, it may not be necessary to carry out calculations in certain cases.
The most common conditions to be addressed by geotechnical engineers are sloping sites and/or very poor soil conditions.
In many cases, this verification involves specific constructive measures for foundations (foundation bonding, foundations in the direction of the slope, steps, etc.) or even sites (reinforcement, underpinning, etc.).
The justification of general stability is based on verification of the following inequality:
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General stability of surface foundations
Settlement of surface foundations
Bibliography
Standards and norms
- AFNOR Eurocode 7: Geotechnical design – Part 1: General rules. - NF EN 1997-1 - juin 2005
- AFNOR Eurocode 7: Geotechnical design – Part 2: Site reconnaissance and testing. - NF EN 1997-2 - septembre 2007
- AFNOR Justification of geotechnical works – Eurocode 7 national application standard – Surface foundations. - NF P 94-261 - juin 2013
- AFNOR Justification of geotechnical works – Eurocode 7 national...
Regulations
Décret n° 2010-1254 du 22 octobre 2010 relatif à la prévention du risque sismique NOR : DEVP0910497D.
Décret n° 2010-1255 du 22 octobre 2010 portant délimitation des zones de sismicité du territoire français NOR : DEVP0823374D.
Arrêté du 22 octobre 2010 relatif à la classification et aux règles de construction parasismique applicables aux bâtiments de la classe dite " à risque...
Websites
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CFBR – French Committee for Dams and Reservoirs
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CFBG – French Committee for Large Dams
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