Essentials in the theory of framed structures . Ui Uz U3 U4 U; Us Ui U8 U9 Uio U,,. Fig. 207, where a is the distance from i?i to the point of zerobending moment; then aRi= P(a - kl)from Eq. 9, page 257 - 5^ + k)4/ Ri = -(4 4 hence a = For any position of P, the limits of k are o and i; hence thelimits of a are %l and /. It is clear, therefore, that if any panelpoint experiences a negative moment from the influence load;the distance of that panel point from the center support mustbe less than 3^ of the arm length. If the panels are of equallength this condition can occur only when ther
Essentials in the theory of framed structures . Ui Uz U3 U4 U; Us Ui U8 U9 Uio U,,. Fig. 207, where a is the distance from i?i to the point of zerobending moment; then aRi= P(a - kl)from Eq. 9, page 257 - 5^ + k)4/ Ri = -(4 4 hence a = For any position of P, the limits of k are o and i; hence thelimits of a are %l and /. It is clear, therefore, that if any panelpoint experiences a negative moment from the influence load;the distance of that panel point from the center support mustbe less than 3^ of the arm length. If the panels are of equallength this condition can occur only when there are six or morepanels in each arm. 3l8 THEORY OF FILAMED STRUCTURES Chap. VIII The stresses for Case IV cannot be determined by the pro-portionate method as heretofore, on account of the dissimi-larity of the influence line diagrams. In such instances theequivalent uniform load may be approximated by the use ofequivalent uniform load table, page 206. For the rightsegment, ^1=25, ^2= and the equivalent uniform load ; the area is 464 and the stress in LiL^ is For the left segm
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectstructu, bookyear1922
