During truss fabrication, the truss member are usually connected by welding does behave like fixed joints not pin joint so how will that behave like truss without pin connection?

  • $\begingroup$ The two parts connected together by welding behave as one part according to the dimensions in each direction... $\endgroup$ – Solar Mike Sep 5 '19 at 6:11
  • $\begingroup$ i mean, even if joints are made by welding , does it behave like a truss? $\endgroup$ – MK khatri Sep 5 '19 at 6:13
  • $\begingroup$ What do you think a truss behaves like? $\endgroup$ – Solar Mike Sep 5 '19 at 6:21
  • $\begingroup$ if joints were pinned, it would not restrain rotation so member wouldnot undergo bending but with welded joint rotation is restrained and thus mumber undergoes bending too;but in truss, member should be subjected to axial load only, isn't it? $\endgroup$ – MK khatri Sep 5 '19 at 6:29
  • 1
    $\begingroup$ Edit ansd improve your question, comments are not for improving questions. Also correct your typos and grammar. $\endgroup$ – Solar Mike Sep 5 '19 at 6:39

The geometry of the trusses are usually long narrow members carrying axial loads,connected to each other in triangles. And the connections are designed to let the axis of truss members pass trough a common center on the connection plate or connection bolted bracket.

Because of this geometry there is no moment at the connections, even if they are rigidly connected. Therefore the connection can be assumed to be a pin connection.

There may be very small tertiary moments due to heat expansion or deflection but those are well within the tolerance range of the truss.

That doesn't mean if a truss will be designed for extreme temperatures or large deflections the effect can be ignored.

  • $\begingroup$ thank you so much sir, finally i got my answer. $\endgroup$ – MK khatri Sep 13 '19 at 8:59
  • $\begingroup$ @MKkhatri if the answer helped, then you should accept it or at least vote for it. You must accept one answer so the site functions as it should... $\endgroup$ – Solar Mike Sep 13 '19 at 10:24
  • $\begingroup$ my votes are not accepted. $\endgroup$ – MK khatri Sep 13 '19 at 10:29

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.