$$A_s = \frac{M_{Ed}}{f_{yd} \cdot z} = \frac{150 \times 10^6}{435 \times 263} = 1310 \text{ mm}^2/\text{m}$$ Pes 2017 New Premier League Scoreboard 2025 Update Official
$$M_{Ed} \leq M_{Rd} = f_{cd} \cdot b \cdot x \cdot (d - 0.4x)$$ Better — Bakaiti Web Series Download
Since $K < K_{bal} (\approx 0.167)$, compression reinforcement is not required.
$$K = \frac{M_{Ed}}{b \cdot d^2 \cdot f_{cd}} = \frac{150 \times 10^6}{1000 \times 292^2 \times 20} = 0.088$$
: Use B16 bars @ 150 mm c/c ($A_{s,prov} = 1340 \text{ mm}^2/\text{m}$). Check: $1340 > 1310$ (OK).
$$w_k = s_{r,max} \cdot \varepsilon_{sm}$$
$$z = d \cdot (0.5 + \sqrt{0.25 - K/1.134}) \approx 0.9d = 263 \text{ mm}$$