Reno Mattresses

Reno® mattresses type Castoro are units manufactured from double twisted hexagonal woven steel wire mesh 6x8 type, made of Galfan (Zn 95Al5 alloy) and Polimac® coated steel wire, they are produced in compliance EN 10223-3. The management and production system is certified in compliance with ISO 9001, ISO 14001:2015 (related to the environmental management system) and ISO 18001 (Occupational health and safety). The base, diaphragms, front, end and sides of the Castoro are manufactured from one continuous panel of mesh. The base is folded onto itself at 1.0m intervals to form double side diaphragms automatically secured with spirals, for a much stiffer unit, able to withstand steeper slopes and retain the rock under high water flow. Reno® mattresses type Castoro are filled with stones at the project site to form flexible, permeable, monolithic structures such as river bank protection and channel linings for erosion control projects. In order to reinforce the structure, all mesh panel edges are selvedged with a wire having a greater diameter (Table 3). Dimensions and sizes of Galfan (Zn 95Al5 alloy) and Polimac® coated Reno® mattresses are shown in Table 1.

Steel wire mesh
The nominal tensile strength of the wire mesh is as per Table 2. Tests carried out as per EN 10223-3. When the mesh is tested at 50% of the nominal tensile strength in accordance with EN 10223-3, the wire will not show cracks in the organic coating within the double twisted region.

Wire
The steel wire used in the manufacture of the unit is galvanized with Galfan, a Zn 95Al5 alloy. A Polimac® coating with a nominal thickness of 0.50 mm is then applied to provide added protection for use in hydraulic works, polluted environments or wherever the risk of corrosion is present. The standard specifications of mesh-wire are shown in Tables 2 and 3. All tests on wire must be performed prior to manufacturing the mesh.