TDP is the double curvature curved surface slider type seismic isolation device, developed by TIS. TDP is composed of two backing plates with the same radius of curvature and a sliding element at the center. Upper and lower parts of the sliding element have the same properties and identical radius of curvature with the backing plates. Therefore, upper and lower backing plates remain parallel to each other during relative sliding motion.

Sliding takes place on both mating surfaces between backing plates and sliding element, simultaneously. During earthquake motion, displacement demand is accommodated by sliding of two different materials on top of each other at the mating surfaces. Energy dissipation is also achieved by friction force that occurs as a result of this sliding. Materials in the sliding surfaces are;

• stainless steel sheet on backing plate side,
• special friction material, Technoslide®, developed and patented by TIS, on the sliding element side.


S.No. Name Size Download
1 TIS Catalogue 1.46 MB
2 TIS Double Pendulum General Information 21.6 MB


S.No. Name Size Download
1 TIS Brand Registry 311 KB
2 TIS CE Certificate 2017 165 KB
3 TIS CE Certificate 2018 440 KB
4 TIS Certificate of European Technical Assessment 306 KB
5 TIS ISO 9001 475 KB
6 TIS ISO 14001 485 KB
7 TIS OHSAS 18001 449 KB
8 TIS TUR Certificate 2017 328 KB
9 TIS ZUS Certificate 2018 478 KB