## Design Strength of Materials and Design Loads(Refer Clause 36, IS Code)

Design Strength of Materials : Partial Safety Factors for Materials (rm), and Design Loads : Values of Partial Safety Factor (rf) for Loads(Refer Clause 36, IS Code) DESIGN VALUES (REFER CLAUSE 36, IS CODE) Design Strength of Materials The strength of any material obtained in a structure is always less than the characteristic strength of the material. It is because of the workmanship or quality control in the manufacture of materials. The reduced value of strength which is obtained by applying partial safety factors to the characteristic strength is called as design strength of the material. The design strength of the material fd is given by \[f_{d}=\frac{f}{r_{m}}\] where f = Characteristic strength of the material rm = Partial safety factors appropriate to material and limit state being considered. Partial Safety Factors for Materials (rm) The values of partial safety factors for limit state of collapse, should be taken as : rmc…