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1. GeneralStandard Reinforcing Bar Markings Most common types for non-prestressed members: hot-rolled deformed bars welded wire fabricAreas, Weights, Dimensions2. TypesASTM A615 - Standard Specification for Deformed and Plain-Billet Steel Bars Grade 60: fy = 60 ksi, #3 to #18 most common in buildings and bridges Grade 40: fy = 40 ksi, #3 to #6 most ductile Grade 75: fy = 75 ksi, #6 to #18ASTM A616 - Rail-Steel BarsASTM A617 - Axle-Steel BarsASTM A706 - Low-Alloy-Steel Bars more ductile GR60 steel min. length of yield plateau = esh/ey = 53. Stress versus StrainStress-Strain curve for various types of steel reinforcement bar.Es = Initial tangent modulus = 29,000 ksi (all grades)
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