| 摘要 |
<p>A brick or block which, in a specific orientation, is generally H-shaped (1) in perimetric profile when seen in a first elevation (Fig. 3), is generally rectangular in perimetric profile when seen in a second elevation at right angles to the first elevation, is generally rectangular in perimetric profile when seen in plan (Fig. 4) and in bottom view, and wherein the end flank (6) of one upright (5), and the end (7) flank of the other upright (4), of the H-shape have, respectively, a projection (8) and a recess (9) shaped and located such that when a number of such bricks or blocks are oriented and stood in side-by-side relation the projections (8) will engage in the recesses (9). </p> |
