In a metal sheet pile, an effective width B [mm], a flange width Bf [mm], a height
H [mm] and a geometrical moment of inertia I [cm4/m] meet the inequalities
700B1,200; 280Bf0.0005B2-0.05B;
and -0.073B+0.0043I+230H380. The metal sheet pile provides
a better cross-sectional performance than a background art metal sheet pile.