Compared to lattice girders, single girders are arranged in one plane or in two parallel layers at most. This type of reinforcement is designed for structures that are primarily loaded in one direction, so there is no need to address strength in more direction. This generally includes flat structures which are subjected to tensile and pressure forces in one axis.
Single girders are used e.g. in reinforced concrete slabs of floors and ceilings, where reinforcement is placed in one or two parallel planes, most often at the upper or lower part of the slab. In addition, single girders are also usually part of the wall structure, where resistance to pressure and tension in one direction is required. This type of reinforcement is also used in a number of horizontal structures, for example in road and railway panels, where the load primarily comes from one direction.
