$10.$ Given: A special moment frame in an office building experiences the lateral displacements shown below when subjected to seismic excitations. All stories are $14$J tall. Assume the building falls in Seismic Design Category

Required:

$(1)$ Allowable story drift at the roof level. $(4$ points$)$

$(2)$ Design story drift at the roof level. $(4$ points$)|$

$(3)$ Does the frame have adequate lateral stiffness in the third story? $(2$ points$)$