Calculate the factored shear capacity of the beam shown in Fig. 1 based on the AC1440.2R...

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Calculate the factored shear capacity of the beam shown in Fig. 1 based on the AC1440.2R method. The section is singly-reinforced and is shear-strengthened with externally bonded CFRP in the form of vertical U-wraps with a finite width (FRP strips as opposed to a continuous sheet). Beam dimensions, reinforcement details, and material properties are as follows: Span of the beam: L = 10 ft • Concrete strength: f= 6,500 psi • Tension steel: three No. 3 bars (4, -3x0.11 in.²-0.33 in.) with f, -60 ksi and d = 13 in. Steel stirrup: No. 2 bars (4,-0.05 in.², each) with f = 60 ksi and a spacing of 8 in. • • CFRP sheet: one ply, thickness (1) = 0.006 in., width (wy) = 4 in., spacing (s) = 8 in., ultimate strain (€) = 0.0167; elastic modulus (E)= 33,000 ksi 4 in. 15 in. 13 in. 8 in. (b) 4 in. (a) Fig. 1. Singly-reinforced concrete beam: (a) cross section; (b) shear-strengthening scheme Calculate the factored shear capacity of the beam shown in Fig. 1 based on the AC1440.2R method. The section is singly-reinforced and is shear-strengthened with externally bonded CFRP in the form of vertical U-wraps with a finite width (FRP strips as opposed to a continuous sheet). Beam dimensions, reinforcement details, and material properties are as follows: Span of the beam: L = 10 ft • Concrete strength: f= 6,500 psi • Tension steel: three No. 3 bars (4, -3x0.11 in.²-0.33 in.) with f, -60 ksi and d = 13 in. Steel stirrup: No. 2 bars (4,-0.05 in.², each) with f = 60 ksi and a spacing of 8 in. • • CFRP sheet: one ply, thickness (1) = 0.006 in., width (wy) = 4 in., spacing (s) = 8 in., ultimate strain (€) = 0.0167; elastic modulus (E)= 33,000 ksi 4 in. 15 in. 13 in. 8 in. (b) 4 in. (a) Fig. 1. Singly-reinforced concrete beam: (a) cross section; (b) shear-strengthening scheme

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