Seismic joint is designed to amortise a large and violent movement in all directions. Usually it is installed in very large gaps in all public buildings. In many countries, seismic activity in the form of earthquakes and tremors has a huge impact on the design and construction of buildings. These special joints connections, work by developing specified resisting moment that enables the connection to maintain its original geometry when under seismic stress. Proper design of these connections is imperative, and structures that perform well in earthquakes are the result.

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	NHS80 - Aluminium The Miska NHS80 is a waterproof joint system designed for both internal and external vertical wall and soffit applications. A significant movement range of � 55mm is catered for with provision for lateral and vertical movement during seismic events. Installation requirements are minimal and a block out of 80mm wide x 70mm deep will ensure a flush finish with surrounding levels. The use of Santoprene in both seals resists moisture and chemical attack whilst providing an aesthetically pleasing architectural finish. This seal can be supplied in a limited colour range to match external facade materials. Covers gap sizes 5-105mm

	MSD - Aluminium Expansion joint cover system MSD with DuroSeal Innovative solutions for Seismic Applications. Structural grade materials ensures extended serviceability. Designed for pathogen sensitive applications and to provide a smooth �bump free� transition. Covers gap sizes 90-140mm, 140-190mm.