Stravibase Spring* bearings are structural springs used for building base isolation, where an acoustic performance with a resonance frequency lower than 6Hz is required.

Stravibase Spring bearings have a static deflection ranging from 10 to 30 mm. Therefore, these bearings are only recommended for structures that are capable to deal with such a deflection variation during the construction process. If limited deflection during construction is required, pre-compressed spring solutions can be offered – please check our Stravibase SpringBox solution for more information.

Each Stravibase Spring consists of a single or double nested springs with a top and bottom cover plate, including an elastomeric anti-slip layer.

Main Benefits

• 2.5Hz to 5Hz natural frequency
• Cost effective high-performance solution
• Quick and easy installation
• Long-lasting and maintenance free
• High lateral stiffness
• Easily adapted to meet different loads and performance requirements

Design Requirements

• Natural frequency requirement
• Design dead and live loads on each load bearing point (vertical and horizontal)
• Available load bearing footprint and dimensions as well as locations of any fixing down bolts
• Fire protection requirements
• Maximum dynamic forces / dynamic displacemen

*Previously known as CDM-CHR