QUESTION 1 (20 points) Fig. 1 shows the strucural plan for one-way three-span solid slab system. Given: Concrete slab thickness = 200 mm, the flooring cover = 2.5 kN/m² and live load = 4 kN/m². f= 28 MPa and fy= 420 MPa, concrete densty=25 kN/m² all beams carry walls of thickness of 300 mm and height 3 m, and density 15 kN/m² 1- It is required that design T or L sections for beams B2, and B3. 2- It is required to evaluate stirrups' spacing, s, required for B2, and B3 to resist the shear forces. 9.0 m B1 4.3 m B2 B3 B3 4.3 m Fig. 1 B2 4.3 m B1

Fig: 1