This man ual de scribes the ba sic and most com monly used mod el ing and analy sis fea tures of fered by the SAP2000 struc tural analy sis pro gram. It is im pera tive that you read this man ual and un der stand the as sump tions and pro ce dures used by the pro gram be fore at tempt ing to cre ate a model or per form an analy sis. The com plete set of mod el ing and analy sis fea tures is de scribed in the SAP2000, ETABS, and SAFE Anal y sis Ref er ence Manual. As.