Essentials in the theory of framed structures . Fig. 204. The stress in UiUz for Case IV, determined by theproportionate method, is o ^, — 208 X = —170 100 3i6 THEORY OF FRAMED STRUCTURES Chap. VIII The stress for Case IV, determined by the exact method, is— Moment about L4.—The influence lines are shown in U, Uj Uj U4 Us Us Ut Ub U9 Ui9 Uii. Fig. 205. The stress in UzUs for Case IV, determined by theproportionate method is -208 X 100 •132 Sec. I SWING BRIDGES 317 The stress for Case IV, determined by the exact method, is-134- 198. Moment about Ug.^The influence Une
Essentials in the theory of framed structures . Fig. 204. The stress in UiUz for Case IV, determined by theproportionate method, is o ^, — 208 X = —170 100 3i6 THEORY OF FRAMED STRUCTURES Chap. VIII The stress for Case IV, determined by the exact method, is— Moment about L4.—The influence lines are shown in U, Uj Uj U4 Us Us Ut Ub U9 Ui9 Uii. Fig. 205. The stress in UzUs for Case IV, determined by theproportionate method is -208 X 100 •132 Sec. I SWING BRIDGES 317 The stress for Case IV, determined by the exact method, is-134- 198. Moment about Ug.^The influence Unes are shown inFig. 206. Whenever each arm has six or more equal panels, theinfluence line for Case IV shows a reversal of stress in one ormore chord members of the loaded arm adjacent to the centersupport. This phenomenon is explained in connection with
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