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Assuming the Effective Depth
Finding the Final or Actual Stresses
INVESTIGATION OF FALLACIES IN ACCEPTED PRACTICE
4 other sections not shown
actual truss ووو ووو analyzing a truss assumption axial loads due balance basic truss bending bers centroidal axes centroidal lines change in length common rotation compression members computed concentric joints considered consistent with equilibrium continuous member correct Cross method depth equal depth of truss determined different effective depths due to joint eccentric moment eccentric moments effective joint elongation stresses elongation-eccentricity stresses end rotations errors external loads final stresses horizontal component hypothetical truss intersection joint locations joint pattern jointed truss length changes line diagram load line positions lower chord member members forming method of analysis method of moment method of sections moment distribution necessary pin jointed Plate primary stresses rigid joint secondary stresses due shears and axial shown in Figure stresses are calculated symmetrical thesis throughout the truss true effective depth true stresses truss that contains upper chord joints upper chord member upper chord stress web members zero