Mass–Spring Seismic Isolation Technology
ISVPL develops one of the world’s most advanced ultra-low-frequency steel mass–spring isolation systems — engineered for early isolation, deep vibration attenuation, and maximum seismic protection for buildings, R&D labs, metro structures, and critical facilities.
The Problem We Solve
Buildings and critical structures fail during M7–M8+ earthquakesdue to the destructive energy of low-frequency seismic waves. Most conventional isolators begin working only after the damaging energy has already entered the structure.
- • Low-frequency S-waves excite building fundamental modes.
- • P-waves travel vertically and cause sudden accelerations.
- • Conventional isolation starts late (typically above 3–4 Hz).
- • No vertical isolation in most global systems.
- • Result → High inter-story drift, resonance, and collapse risk.
Our Solution — Tunable Ultra-Low-Frequency Isolation
ISVPL’s steel mass–spring isolator uses a patent-direction tunable mechanism that reduces natural frequencies to the 1.4 Hz vertical and 1.0 Hz horizontalrange — lower than most global isolator systems.
- • Shifts structural natural frequency far below seismic excitation band.
- • Dramatically reduces resonant amplification.
- • Provides early isolation starting at 1.98 Hz.
- • Reduces acceleration and inter-story drift during strong earthquakes.
- • Controls both vertical (P-wave) and horizontal (S-wave) seismic energy.
What Makes ISVPL Technology Unique?
1.4 Hz Vertical Isolation
One of the lowest vertical natural frequencies in the world — significantly lower than typical 3–4 Hz global systems.
Early Isolation (1.98 Hz)
Seismic isolation starts earlier than conventional isolators, preventing resonance and structural overload.
Horizontal Isolation at 1.0 Hz
Provides exceptional drift reduction during strong lateral shaking.
42 VdB Global Attenuation
Industry-leading vibration reduction from 0–250 Hz — benchmarked against global leaders like GERB, Fabreeka, and Mason.
Vertical + Horizontal Control
Controls P-waves, S-waves, structural vibration, and ground-borne noise — a capability very few global systems provide simultaneously.
Tunable & Modular Design
Frequency tuning allows designing custom low-frequency systems for buildings, labs, data centers, metros, and industries.
Technical Highlights
- • Vertical natural frequency: 1.4 Hz
- • Horizontal natural frequency: 1.0 Hz
- • Attenuation: 42 VdB (0–250 Hz)
- • Isolation onset: 1.98 Hz
- • Controls: P-waves, S-waves, micro-vibrations, building resonance
- • Load capacity: Custom engineered
- • Applications: Buildings, Metro, Data Centers, R&D Labs, Industry