| 摘要 |
<p>Construction element (1), comprising at least two strips (6,7,8) joined by at least a longitudinal union. At least one of said strips has one or two crenellated longitudinal edges (4) with alternating projections (9) and recesses (10). Each longitudinal union between strips is made between projections (9) of at least one crenellated longitudinal edge (4) of one strip (6,7) and at least a stripe for longitudinal union (3) belonging to other strip (6,7,8). The number of strips (6-7) having one or two crenellated longitudinal edges (4) is less than or equal to the number of strips (6,7,8) which have stripes for longitudinal union (3).</p> |
