(a) Draw the qualitative influence lines for the moment at a section located at the top of...

(a) Draw the qualitative influence lines for the moment at a section located at the top of the first-floor column BG and the vertical reaction at support C. Columns are equally spaced. (b) Indicate the spans on which a uniformly distributed load should be placed to maximize the moment on a section at the top of column BG. (c) Draw a qualitative influence line for negative moment on a vertical section through the floor beam at E.