To determine the steel grade for a section such as UB 305x102x25, one must understand that the beam section shape does not dictate the steel grade, which can be S275, S355, etc. The steel grade is independent of the section dimensions and must be specified separately. Additionally, to calculate the self-weight of the steel beam, one should model it as a distributed load, which involves multiplying the beam's volume by the steel density.
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Mech_Engineer said:The beam section is only the shape, the steel grade is separate and not controlled by the section.