A method aultabl. for hand cllculallon. or for ua. with dI.k top comput … I. prellnted for the dotermlnltlon of fund.”,entaUI”,o J!8rlod of f .. mad bulldlnga. Stltt”e .. mltrlx and m … matrix are for”,od with roapecl to deflecllon. at a fewar level thin the nu.,ber of .toroy.. Onl, on. 1″01. I. ahown to yield good re.ull.. Tho computation work I. practlcilly Ind.·~ pendent of the number of .toreys.