The flexibility or force method of analysis of structural frames is complicated by the choice of appropriate unknowns. A mixed approach is presented in which member-end moments and sway deflections are adopted as unknowns, thereby providing uniformity of approach for computer analysis.
Recent proposals to avoid snap-through failure of practical pitched-roof steel frames incorporate the elastic snap-through buckling load of such frames. In this study it Iis shown that the elastic snap-through buckling load used in these proposals is far higher than the snap-through buckling load obtained from a more rigorous elastic analysis.
Extreme storms and the resulting floods over Natal appear to come from two distinct weather-generating mechanisms. The paper descriptionbed the estimation of the mixed distribution functions for the two components and attempts to regionalize large storms for design purposes.