Flow chart of reinforcement concrete design, Cheat Sheet of Design

Download Flow chart of reinforcement concrete design and more Cheat Sheet Design in PDF only on Docsity! STEPS IN FINDING THE REQUIRED STEEL AREA, As START Given: b, d, f'c, fy 17 ≤ f'c ≤ 18 28 ≤ f'c ≤ 55 β = 0.85 f'c > 55 β = 0.85-(0.05/7)(f'c-28) β = 0.65 Ф = 0.65+0.25((600-fy)/(1000- fy)) ФMnmax > Mu fs = fy (yield) ФMnmax < Mu Doubly Reinforced Proceed to CHAPTER 3 ФMnt = (459/1600) (0.85)βf’cbd^2(1-(3/16)β) ФMnt > Mu ФMnt < Mu Mu = ФRnbd^2 Mu = ФCc(d-(a/2)) a = βc, fs = 600((d-c)/c) ρ= (0.85f'c/fy) (1- √(1- (2Rn)/0.85f'c) ρmin = 1.4/fy ρmin = (0.25√f'c)/fy Area Required END ρ = As/bd Mu = (0.65+0.25((fs- fy)/(1000-fy))(0.85f'cβab)(d- (a/2)) a = βc 0.85f'cab = Asfy Area Required END