Mesh reinforcement can be used by activating the mesh reinforcement in the flooring properties. You can specify the type of mesh reinforcement to be used or the most suitable one can be selected automatically. Band beams are constructive and are not taken into account. It can be defined to the slab borders, around the gap or to the areas that you think will be difficult in slab. Size and reinforcement can be user-defined. There are two types as inner and outer band. Closed stirrups are used in the inner band, the ones defined in the middle of the floor can be of this type. The outer band is a U-shaped open stirrup. It can be preferred to be used on the edge of the flooring as in the picture.