| 摘要 |
<p>The double-faced shuttering panel has each face with reinforcing components, and is partic. for the formation of cavity walls. It incorporates a mechanism whereby the two faces are movable to and from each other, while remaining parallel. Bolts are provided for locking them in the expanded position, and lugs for attachment of lifting tackle. The mechanism can be so arranged that the faces move apart and together in an oblique direction while remaining parallel and in contact with each other via ramp faces on the rear sides. These ramp faces can be formed by horizontal reinforcing members of trapezium section.</p> |
