Bearing resistance (Foundation)
The calculation is made according to EN 1997-1 6.5.2
The following inequality shall be satisfied for all ultimate limit states:
- Vd ≤ Rd
The current ground pressure Vd shall include the weight of the foundation. The capacity Rd shall be calculated as shown below. The design case STR/GEO should be used with consideration to both geotechnical and constructive loads.
Current ground pressure
A uniform ground pressure is calculated. For eccentric loads the uniform ground pressure is distributed on the effective area B'L'.
Bearing resistance capacity
The capacity is calculated according to EN 1997-1 Annex D.
The bearing resistance capacity is calculated according to [3] 4.3.1.3 eqv. 4.2 and [4] 2.42 and 3.42.
- For cohesionless soil the calculation is performed for drained conditions (cohesion parameter c = 0).
- For normally consolidated clay the capacity is calculated with the assumption of undrained conditions (friction slope ϕ = 0)
- For over consolidated clay and medium soil the calculation is made with regard to both drained and undrained conditions.
- For rock allowed values can be found in [4] 3.42.
The partial resistance factor γR,v considering uncertainties in the analytical model is predefined for design approach 3.