Reinforcement of wood floor by its upper face, through metal pieces

Reinforcement of wood floor beams and joists through the placement, on its upper face, of 6.5 kg/m of UNE-EN 10025 S275JO steel piece composed of hot-rolled profiles of series L, LD, T, round, square, rectangular and pletina, with anticorrosive primer coating, worked in a workshop; anchored to the joist with 10 fixations per linear meter formed by zinc-coated wood screws of 7 mm diameter and 90 mm length; retacado between the joist and the metal reinforcement piece with industrial cement mortar, M-15, with hydrophobic additive; filling between metal reinforcements with lightweight concrete HL-25/B/10/XC2, density between 1200 and 1500 kg/m³, (minimum amount of cement 275 kg/m³), manufactured in a central; placement of electrosoldered mesh ME 20x20 Ø 5-5 B 500 T 6x2,20 UNE-EN 10080, poured and spread of 4 cm thick HA-25/B/12/XC2 concrete manufactured in a central, and poured with a cubilote.