Abstract: The present invention concerns a drainage network, which is characterized by the fact that said drainage network is a network for ground constructions equipped with drainage belts with which a three-dimensional drainage network system for diverting water can be formed in the ground, thereby providing rain water and underground water accumulated in the ground a means to be drained for the purposes of alleviating hydraulic pressure exerted on the ground, increasing ground stability and preventing earth movements from occurring in the construction site.

Abstract: An expansion joint for buried inner placement over an expansion seam under a bridge roadway includes padding sheets fixed to the bridge deck on either side of the expansion seam in the deck. Padding slats are fixed to the bridge deck outboard of the padding sheets. A steel plate is superimposed above the padding sheets and padding slats and is provided on its underside with sliding pads and padding slats corresponding to the padding sheets and padding slats on the bridge deck. Rivets are anchored in the deck and accommodated in expansion slots in the sliding pads and steel plate. The rivets and slots are covered by guard covers. The joint is intended to be paved over.