| 摘要 |
<p>The variable multi-purpose space preserver on vertical, horizontal or intersecting points in steel reinforcement meshes is for spacing concrete coverings and interfacing reinforcements, with means for boring racking or bolting holes in interfacing form sections of plastic in tubular form with two end pieces which can rotate fully and be laterally displaced. The front and bottom slits, which are rectangular square or triangular as preferred, in the saddle-type workpieces on the tubular piece, are arranged so that one side of the front slit lies in a single plane with one side of the bottom slit. The nail holes or slotted holes provided at the side in the saddle workpiece produce a union with the reinforcement acting as a barrier in combination with a nail.</p> |
