摘要 |
<p>The element has a rectangular lower surface resting on ground with a plane surface, where the element is made of reinforced, non-reinforced, machined, molded, injected or extruded thermoplastic or thermoset. A V-shaped upper surface (5) represents an obtuse angle, where the element has a length of maximum of 300 centimeters, a width (2) of the element is 120 centimeters and a height (9) of two longitudinal sides (4) is 10 centimeters. Four borings are placed in the obtuse angle.</p> |