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HOOK and LEVERAGE
Strong  -  Easy  -  Fast

VIBRATION RESISTANT
SEISMIC APPLICATIONS

The QuakeClamp provides an answer for
Seismic applications.  It remains secure
during Extreme Shaking and Vibration.

  • Prohibits friction clips/attachments that rely  only
    on friction to hold in place.
  • Requires Positive Connection Across Beam
  • Requires the use of safety straps/devices when
    friction based clamps are used.


         U-bolt and Window Clamps do not meet
                                 these requirements.
The QuakeClamp grabs the strut and beam in one leveraged
total entrapment.  The strut and beam is held together with
the spring action of the clamp.  

This insures constant clamping where the force that
causes  sliding remains high even after slipping begins
An early version of the QuakeClamp has been in use for
over 8 years.  The clamp is holding thousands of
accessories to boat trailers.  The bouncing, shaking, and
extreme vibration on the road far exceeds the dynamics of
an earthquake.

        Seismic Beam Clamps / QuakeClamp

Choices for beam clamps that meet various seismic code requirements are quite limited.  
Common U-bolt clamps do not meet anchorage requirements since they rely on friction to hold in
place and are susceptible to walking off the beam.  Clamps that use restraining straps are limited
in how they can be used.  The way retainers and straps are used has to be evaluated for each
situation as they are applied during installation.  Unfortunately, because there have not been
good choices, common clamps are often used even though they fail to meet basic requirements.  
Engineers need components that are acceptable in all situations.

The QuakeClamp can solve these problems.  The QuakeClamp  grips as one unit around the
strut channel and both flanges of the beam eliminating any need for additional retainer/safety
straps or other anchorage devices.  It hooks and leverages to efficiently hold the strut channels
using only one bolt and nut.  Not only does it meet basic requirements for seismic codes, the
QuakeClamp is the economic choice in non-seismic applications.  It is competitively priced and
saves 4+ minutes installation time for each connection.  It also works as the basis for single point
and trapeze hanger assemblies when used with standard strut channels or stronger hanger
bars.   The QuakeClamps for holding pipes and conduits will be available in the future.  
QuakeClamps are easily scalable to needed sizes and capacities.  Our Hanger Clips provide
many ways to hang and brace loads.

                           Seismic Advantages of the QuakeClamp

•        Spring Action – Clamp flexes as bolt is tightened.
•        Total Entrapment griping both sides of I-beam and strut channel. Built in across beam
  restraining.
                        (No safety strap required)
•        QuakeClamps can hang loose and still not fail.
•        Priced for everyday non seismic use.
•        Use for direct attachment or with a hanger assembly.

QuakeClamps have a straight load path and do not apply unwanted forces to strut channels.  
When the U-bolt clamp is tightened, loads are applied through both ends of the bent plate.  One
end creates clamping forces pulling the beams flange and strut channel together.  The other end
pushes against strut channel in the same direction as the load adding to forces on the strut
channel.  This force decreases the actual load that the strut channel will be able to support.  As
tightening occurs the combined forces on each end of the bent plate in opposition to the U-bolt
can cause the strut channel to begin to crush further weakening the strut.  The load path is offset
and not straight through the beam flange.

The QuakeClamp was tested and evaluated to the MSS SP-58-2009 standards by NC State
University.
QuakeClamps meet these requirements.
Seismic Standards
Seismic Advantages
US Patent Numbers
8480041
8714495
8770885