An inverted \(T\)-beam of \(4 \mathrm{~m}\) span is simply supported at the ends. Its cross-section is 300 \(\mathrm{mm} \times 250 \mathrm{~mm} \times 10 \mathrm{~mm}\). If permissible stresses in tension and compression and \(60 \mathrm{MPa}\) and \(80 \mathrm{MPa}\) respectively, calculate the safe uniformly distributed load on the whole span.