GGU-UPLIFT: Utilisation factor (hydraulic failure) using partial safety factors
Using the partial safety factor concept the following must be verified:
S'k = characteristic flow force on the percolated soil mass
γH = partial factor for the flow force in favourable or unfavourable subsoil in the
HYD (EC 7) limit stateG'k = characteristic dead load of the buoyant percolated soil mass
γg,stb = partial factor for stabilising permanent actions in the
HYD (EC 7) limit statelayer 1 (i = 1) is the uppermost layer
The so-called utilisation factor µ can also be calculated from this relationship.
µN = utilisation factor of layer N
Utilisation factors ≤ 1.0 mean that sufficient safety is given.