3. Carry out the following two set of calculations and

Question

3. Carry out the following two set of calculations and bring your neat solution sheets to the lab session. These will be kept by your demonstrator - please print your name and student number on each sheet, assume that the concrete average strength f. = 40MPa and characteristic strength fe'=30MPa: a. Predict the loading capacity for the under-reinforced beam (Fig. 2a) and the shear capacity (Fig. 2b) using the equations on Page 9 in "RC beam bending Lab.pdf". Hint: calculate the moment and shear capacities first using the equations, then draw the SFD and BMD to find the relationship between the failure moment/shear force and the applied load; b. Repeat the same calculations by using the average material strength without any partial safety factors, i.e. the concrete compressive force Fc =0.8xbfc and steel tensile force F₁ = f A.