Figure11

Figure 11. PDFs and CDFs of the axial stress acting on members in sub-regions Z1, Z8, Z10 and Z17. For ease of analysis, the roof is divided into 18 sub-regions (6 sub-regions $$ \times $$ 3 sub-regions) of the same size (36 m $$ \times $$ 30 m) that are sequentially labeled Z1 to Z18; PDF: probability density function; CDF: cumulative density function. (A) PDFs of the equivalent extreme-value axial stress; (B) CDFs of the equivalent extreme-value axial stress.