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Re: Base Isolators

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Actually, the lead mainly provides energy dissipation.  Axial load 
is carried by steel-and-rubber sandwich.  All deformation is carried 
by shear of rubber & lead.  No "lubrication" that I can think of.

Charley

-- 
Charles Hamilton, EIT                   Graduate Student Researcher     
Department of Civil and                 Phone: 949.824.8694
    Environmental Engineering           FAX:   949.824.2117 
University of California, Irvine        Email: chamilto(--nospam--at)eng.uci.edu