Not sure about the units of the formula, but I would have thought you would design wall formwork for "self consolidating concrete" with full hydrostatic concrete pressure.
Because SCC is not placed in traditional lifts, and the rate of placement can be high, you should use a much higher than normal form pressure. SCC acts as a fluid, and the self-consolidating nature of the aggregates will result in near-full hydrostatic pressures. If your depth is great, consider accelerating the set (non-chloride accelerator) and placing in lifts.