| 摘要 |
1337298 Building elements INGENJORSFIRMAN NILCON AB 19 Oct 1971 [15 Dec 1970] 48470/71 Heading E1B [Also in Divisions B4 and B5] Channel- or T-shaped building elements are moulded from concrete having a water/cement ratio of 0.27-0.35. A channel-shaped element 1 (Figure 10) includes side projections 9 and reinforcing irons 5, 6, 8. The sides of two elements can be interlocked and joined by mortar 61 (Figure 12). |
