Questions and discussion for this lecture live here. Fire away by hitting Reply below 
I’m a bit confused by the logic of having an upward-pointing reaction at A to satisfy EQU state. If we are concerned with designing against uplift at A, shouldn’t we want the reaction to point downwards?
Hi @Jomo_Ndirangu - If the reaction pointed downwards, this would mean that the structure is trying to lift off its foundation at A (i.e. uplift). The fact that the reaction at A evaluates to a positive (upward) pointing reaction force means that the structure is imposing a vertical downward force at A and as such, there is no uplift at A, satisfying the EQU limit state.
Seán