It is assumed that the dosage is 30 kg/m³ and that the design strength, fy, of the fibres is 900 N/mm².

At a dosage of 30 kg/m³, the fibres provide a reinforcement area equal to 0.37% of the concrete area. The contribution of the fibres to the longitudinal shear capacity when determining the Transverse Reinforcing is given by:

0.7 Asv fy = 0.7 (0.0037 Acv) 900

where Acv is the area of the concrete. When the deck is parallel to the beam, Acv only includes the area of concrete above the deck, but when the deck is perpendicular to the beam Acv includes the area within the deck rib. If the deck is parallel on one side of the beam and perpendicular on the other, the area of the concrete within the rib will be ignored when calculating the required transverse reinforcing for the side with deck parallel and will include the area of the concrete within the rib when calculating the required transverse reinforcing for the side with deck perpendicular.

The contribution of Dramix in resisting the longitudinal shear is considered concurrently with the contribution of any conventional reinforcement, concrete and deck profile.

The contribution of deck parallel to the beam is ignored.