As shown in figure the building span length is 24m, the roof slope is 5%, the horizontal projection spacing of purlins is 1.5 m. the span length of purlin is 6m The material is Q235. B HE A 6000 6000 6000 0 3 Load case: 1) The nominal value of roof vertical uniform live load is 0.3kN/m 2 2) The nominal value of vertical uniform permanent load include self-weight of purlin) is (0.1*XX) kn/m2, XX is the last two digits of the student number Requirements: 1. Draw the layout of purlin system, marked the number of members (such as purlin, anti-sag bar, diagnal tie bar, rigid strut and flange brace in the first column spacing (10) (in proper proportion when drawing ) Area- X-X 43 section parameters: Section size (mm) C200x70x20x2.5 h- hubela . t- 200- 70-20-2.5A 1 ix W- Iv cm. cm. cm cm- 538.21. 7.74. 53.82 56.27 y-yo i Wymax cm 12 (cm) 8.982 cm Wymio cm 11.25 2.54 28.182 As shown in figure the building span length is 24m, the roof slope is 5%, the horizontal projection spacing of purlins is 1.5 m. the span length of purlin is 6m The material is Q235. B HE A 6000 6000 6000 0 3 Load case: 1) The nominal value of roof vertical uniform live load is 0.3kN/m 2 2) The nominal value of vertical uniform permanent load include self-weight of purlin) is (0.1*XX) kn/m2, XX is the last two digits of the student number Requirements: 1. Draw the layout of purlin system, marked the number of members (such as purlin, anti-sag bar, diagnal tie bar, rigid strut and flange brace in the first column spacing (10) (in proper proportion when drawing ) Area- X-X 43 section parameters: Section size (mm) C200x70x20x2.5 h- hubela . t- 200- 70-20-2.5A 1 ix W- Iv cm. cm. cm cm- 538.21. 7.74. 53.82 56.27 y-yo i Wymax cm 12 (cm) 8.982 cm Wymio cm 11.25 2.54 28.182