| 摘要 |
End wall ties, vertical support bars on the other side, with clamping brackets screwed to the steps, and bolt connections between steps, incorporated in a staircase. Between all the steps (24), on both sides, there is a flexurally rigid, height- adjustable bolt connection (26).On the wall side, only below every second, third or fourth step, there is a wall tie (30), independent of the bolts, and screwed in.The system is designed to give a sound insulating effect. Brackets (25) are fitted pref. only on the steps which have no wall ties. Steps may be made of chipboard, or layer-cemented stone steps.Mass-production and installation are simplified
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