Abstract: A film tunnel for forming a roadway roof has supports between which at least one film is stretched. The supports include first and second groups of supports, the first group supports arranged on a first side and the second group supports arranged on a second opposite side of a longitudinal center plane of the film tunnel. The first and second group supports form pairs of supports having spaced upper free ends and connected and retained relative to one another by at least one retaining device. Each support at least of the first and/or second group has a lower part and at least one upper part. When the retaining device is released, the at least one upper part is guided by its weight force along the at least one lower part in the direction of a lower end of the at least one lower part into a lower end position.

Abstract: A film tunnel for forming a roadway roof has supports between which at least one film is stretched. The supports include first and second groups of supports, the first group supports arranged on a first side and the second group supports arranged on a second opposite side of a longitudinal center plane of the film tunnel. The first and second group supports form pairs of supports having spaced upper free ends and connected and retained relative to one another by at least one retaining device. Each support at least of the first and/or second group has a lower part and at least one upper part. When the retaining device is released, the at least one upper part is guided by its weight force along the at least one lower part in the direction of a lower end of the at least one lower part into a lower end position.