Design four marked members of the lattice beam (see figure). For upper and lower chord one equal leg angle is used. For diagonals and vertical members two equal leg angles are used (lattice bar). The upper chord is laterally stabilized at the supports and at places where the forces acting. - span of the lattice beam - high of the lattice beam - load - steel grade F L= h = Fa= C F 18000 mm L/10 F 3 ANUNA 4 L 99 KN S 235 F Fa