| 摘要 |
Shuttering for use in casting a slab/beam over a substrate comprises a hollow support structure 2 defining a multiplicity of four-sided cells (8, 9 Figure 4) bounded by a first set of walls 6 extending across the structure in a first direction and a second set of walls 7 extending across the structure in a second direction transverse to the first direction. The support structure is placed on the substrate to support the slab during casting. The support structure is formed by a moulding process using expanded plastics material. The structure has a first supporting condition (Figure 6)in which the depth of the support structure is D, and a second collapsed condition (Figure 7)in which the depth of the support structure is d, wherein d is less than 0.38D. The shuttering may feature recesses which define passageways between adjacent cells. |
