Page 26 - Handbook of Civil Engineering Calculations, Second Edition

STATICS, STRESS AND STRAIN, AND FLEXURAL ANALYSIS 1.9

FIGURE 4

the letters in the order in which they appear. Then refer to the force polygon pertaining to
that joint, and proceed along the polygon in the same order. This procedure shows the di-
rection in which the force is acting at that joint.
For instance, by proceeding around joint 4, CNMKB is obtained. By tracing a path
along the force polygon in the order in which the letters appear, force CN is found to act