| 摘要 |
This form comprises an inner envelope (3) which is open at the top and whose shape and inner cross-section correspond to those of the element (40) to be lined, and whose opening (5) is edged by two wings (6) protruding towards the outside, and an outer envelope (4) in which there is formed a longitudinal opening permitting the engagement, through it, of the inner envelope (3) until the abovementioned wings (6) come into contact with the wall of the outer envelope (4), the space delimited by the envelopes between them being filled with a rigid material (15 to 17) of low density, means (10) for fixing the envelopes (3, 4) to one another being provided, as well as spacers (11) fixed to at least one of the envelopes (3, 4) and acting as tie rods between the free edges of the latter, means additionally being provided for fixing the form (2) to a wall along the thickness thereof or to a facade, these means being capable of holding it via its outer envelope (4). Shuttering of beams or lintels. <IMAGE>
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