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seismic

  1. J

    Finding Tension and Shear Loads of Seismic Snubbers

    Hi, When I want to calculate tension and shear loads of cables at picture below, I am using equations below; Cable Load (Fc = Horizontal seismic force / cos60°) Tension Load (T = Fc x sin60x1,3) Shear Load (V = Fc * cos60x1,3) However, I want to use seismic snubbers to mount my...
  2. J

    Seismic Applications for Lighting Fixtures

    Hi, I have searched about seismic applications for lighting fixtures and I found the text below. Can I use this table for conventional ceilings or do these requirements apply only to suspended acoustical ceilings? Should I use four seismic cables for each luminaire (even for circular luminaires...
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