(Solved): Answer c) Determine the areas of reinforcement required in the first span and at the first interna ...

Answer c) Determine the areas of reinforcement required in the first span and at the first internal support (NOT the end support) based on the beam cross-section shown in Figure 1(a) and the moments calculated in b) above. Sketch the cross-sections making sure that you adhere to the basic detailing rules.

1. Figure 1(a) represents the cross-section of a deep beam that has been cast monolithically with a 1-way spanning slab. In this case, the beam is continuous over 3 spans and each span is equal to $$9\mathrm{m}$$. The span of the 1-way spanning slab, which spans between the beams, is $$5\mathrm{m}$$. $$b_{\text{eff }}=\left(b_w+b_{\text{eff1 }1}+b_{\text{eff2 }}\right)$$ where $$b_{\text{eff1 }}=\left(0.2b_1+0.1l_0\right)?0.2l_0?b_1;b_{\text{eff2 }}=\left(0.2b_2+0.1l_0\right)?0.2l_0?b_2($$ refer to Figure $$2(b))$$ The beam is subjected to the following loadings: Permanent action $${\mathrm{G}}_{\mathrm{k}}=50.0\mathrm{kN}/\mathrm{m}$$ (including self weight) Variable action $$Q_k=35\mathrm{kN}/\mathrm{m}$$ Ultimate load $$\mathrm{n}=1.25{\mathrm{G}}_{\mathrm{k}}+1.5{\mathrm{Q}}_{\mathrm{k}}$$ (maximum) Using the coefficients provided in the Formula Sheet; (c) Determine the areas of reinforcement required in the first span and at the first internal support (NOT the end support) based on the beam cross-section shown in Figure 1(a) and the moments calculated in b) above. Sketch the cross-sections making sure that you adhere to the basic detailing rules.