yield strength fy = 276 MPa. Compression steel if required shall have its centroid 60 mm from extreme concrete
fiber. Calculate the required tension and compression steel area if the factored moment Mu is 620 kN-m.
98 kNm 2 600 (d-c) =- 600 ( C 155954 Mu = 0.55090)(30)(130((200) 130 (470 = 1212.852 MPa 7fy (gields 1000 mpa (0 = 0.90 c= alf. for f'= 30 MPa B,= 0.85 0.05 (f'-28) = 0.85 0.05 (30-28) = 0.8357 7 C= 130/0.8357 = 155,556 mm bw =290 mm Mu= 0.85 fi 'ab (d-) Colro d=470mm Ο Asfs 2 Solution bs = 1200 mm T 130mm C:0.85Fe'ab7 Flange thickness t = 130 mm Width of web, bw = 290 mm Effective depth, d = 470 mm Concrete strength f'c= 30 MPa Steel strength, fy = 345 MPa If the beam is reinforced for tension only, determine the ultimate moment capacity when the depth of enete flanon ls the flanee thialn
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