Medium series double tee beams are intended to form part of the structure of a bridge span, and can be up to 32 m, with beam depths of up to 125 cm. There are two categories of beams of this type:
- Wide wing: these are beams in 120 cm modular widths, placed one next to the other to form part of the formwork for the concrete slab.
- Narrow wing: this is a solution that allows greater separation between beams; formwork planks must be positioned between them to enable the concrete slab to be poured. This option can be adopted in order to reduce costs.