High-quality, variable and favourably-priced reinforcement of mineral-containing building materials is now possible by means of warp-knitted triaxial reinforcement grids. By arranging the yarn layers in the 0˚and ±60˚directions, it is possible to develop light-weight concrete building constructions, using filament yarns made from alkali-resistant glass (AR glass) or fibrillated polypropylene tape yarns. These grids have a considerably smaller weight compared to conventional solutions and they are produced on the special stitch-bonding machine model 140 16 b/T.