The actual lateral load capacity of the SFRS includes the effects of member overstrengths similar to those used to determine the Ro factors. The applicable CSA design standards include requirements on calculating the overstrengths and capacities, which may be based on the members’ nominal or probable resistance. The actual capacities are larger than the factored loads and factored resistances and, in many cases, can be significantly larger. Note that the foundations designed to develop the capacity of the SFRS will undergo movements and Sentence 4.1.8.16.(1) still applies.