| 摘要 |
<p>A walling block with a simple stacking facility has a rectangular basic shape with a male profile on the top surface comprising a section through a cone, i.e. with sloping sides, and with a corresponding female profile on the underside. The female profile is under an arched profile which provides hollow spaces inside the assembled wall. The top of the wall is fitted with blocks with flat upper surface. The blocks are shaped in sets with both walling and topping blocks. The blocks are made in two or more sizes which easily stack with each other to form a secure wall.</p> |
