Why Pall Friction Dampers are Favoured?
They are simple and foolproof in construction. Offer reliable and repeatable performance at low cost. Possess large rectangular hysteresis loops. Greater energy dissipation for a given force. Hence, fewer Pall Friction Dampers are needed. Conversely, exert lesser force for a given damping. Provide supplemental damping and stiffness for added stability. Performance is independent of velocity and temperature. Constant force for all future earthquakes (DBE/MCE). Therefore, design of connections and members is economical. They are not active during service loads and wind. Hence, no possibility of failure due to fatigue before an earthquake. Need no repair or replacement before and after earthquake. There is nothing to damage or leak. Energy dissipation is through friction and not through the damaging process of yielding. After an earthquake, the building returns to its near original alignment due to spring action of an elastic structure. Compact and narrow enough to be hidden in partitions. They can accommodate foundation settlements. Available for all types of bracing, including tension cross bracing, and expansion joints. Custom made. Easily adaptable to any site condition. Can be welded or bolted.