Marecchia N2 BP 4

Bridge parapet
Vertical posts in “CORTEN®” S355J0WP or galvanized S355JR steel, “C” section 120x80x25 mm, 4 mm thick and 675 mm long, with base plate and reinforcing gussets welded to the base. The posts are spaced 4000 mm apart and anchored to the support with threaded bars Ø18×250 mm and two-component resin. A horizontal double-wave rail in “CORTEN®” S355J0WP or galvanized S355JR steel, 4318×310 mm, 2.5 mm thick, is fixed to the posts. The horizontal band is completed with solid-wood strips 60×50 mm and 1990 mm long partially covering the rail, suitably shaped and impregnated in line. The lower band is coated with a dedicated white reflective paint. The barrier can be upgraded by removing the wood cladding “kit”, redefining the device into a barrier of the same certified class. The steel components are joined by high-strength round-head bolts Cl. 8.8 M16x40 (Rail–Post, with an added slot-cover plate), and M16x30 (Rail–Rail); nuts and washers. The strips are fixed to the rail with round-head bolts Cl. 4.8 M16x60; nuts and washers.