Tiêu đề PSAD 37 (Updated 12-26-24).pdf ✅

For the plastic centroid, Shown is the table for the computation of the plastic centroid. Segment x from left Freq (Forces) 1 250 2 = 125 0. 85(21)(400×250) = 1785000 2 250 + 350 2 = 425 0. 85(21)(350×200) = 1249500 3 250 2 = 125 (420)(6) π ( 4 )(20) 2 = 758034. 8914 4 250 + 350 − 66 − 68 2 = 500 (420)(4) π ( 4 )(32) 2 = 1351136. 168 Using the stat mode, x = 295. 267 mm The eccentricity from the plastic centroid is e = 295. 267 − (248. 529 − 100)e = 146. 738 mm Therefore, the moment induced is M = PeM = (2500)(0. 146734)M = 366. 845 kNm