What is the use of Plate Girder in the Roof Trusses?
What is the use of plate girder in the roof trusses?
Hi Sachin, thank you for your question.
Plate girders are actually built-up steel I-beams, usually used where typical I-beam shapes are inadequate (i.e. railroad bridges). In timber framing we call girders “girts,” or we use “girder trusses.” I assume this is what your question pertains to, and simply put, they are used where a traditional heavy timber beam/girt would be inadequate. We usually use them where the client doesn’t want interior posts and we need to span a long length, or in high snow regions with long spans, etc.
Hope this answered your question!
Matthew McGinnis, EIT
Junior Timber Frame Engineer
Vermont Timber Works