| 摘要 |
The mat (1) comprises mat wires (13,14) crossing each other at right-angles and the thus formed fields are equilateral, particularly quadratic, with low expansion. The mat wires, preferably in all directions, via the outermost wire (5-8) project with their extensions (9-12) by half the distance (2,3) equal to the average value of the spacing of the crossways located mat wires (13, 14). INDUSTRIAL STANDARDS - The steel complies with Swiss standard (SIA) (Swiss Industrial and architectural Standard) 162 and European standard ENV 10080.
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