CE 214 Chapter 6: Chapter 6 CE 214
16 Mar 2016
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Structural analysis: trusses, frames, machines 10/20/14 8:25 am. Planar truss/roof truss: lies in a single plane and used to support roofs or bridges, roof load transmitted to the truss at joints by means of a series of purlins (eg: d-d") Simple trusses: truss is composed of a slender. Bridge truss: load on deck is transmitted to stringers, then to floor beams and finally to joints b, c and d of two supporting side trusses. Long trusses: at the end there is a rocker of roller: that allows freedom for expansion or contraction due to temperature change. E is a roller and a is a pin. F(bc) is compression (pushing on the pin because there must be a force opposing the 500n applied force) F(ba) is tension (it is pulling the pin) Zero force members: analysis is simplified if we determine those members which support no load (zero force members zfm), these are often determined by inspection.
