(Solved): A cast iron beam has a T-section whose dimensions are given below; she simply is. supported and str ...

A cast iron beam has a T-section whose dimensions are given below; she simply is. supported and stressed by its own weight as well as by a load concentrated at mid-span (Fig.3). It is assumed that cast iron can withstand in service a maximum stress of 80 MPa in tension and -180 MPa in compression. The specific weight of cast iron is 72.5 kN/m³. Determine the maximum admissible force F in service for the following two orientations of the section: small base (35 mm) stretched; - large base (150 mm) stretched; In both cases, represent the normal stress distribution ox in the most stressed section by M?.