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(11) | EP 0 378 972 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Grid lagging for a tunnel lining |
(57) Net grid lagging for road tunnels or the like, characterized in that it comprises
a plurality of preformed panels (1) made of a metal net grid assembly which is provided,
on two opposite sides thereof, with ccoupling members (2,4,5) for engaging with two
side longitudinal guides (10) supported between the ribs of a supporting frame. |