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Our consultants regularly engage in research activities related to our normal client services. This archive includes the majority of the published technical papers, presentations, and other publications related to this research.

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Blong Xiong Colin Gordon Dale Pekrul Hal Amick Michael Gendreau Stephen Jaeger Steven Lank
Acoustics Construction Vibration Groundborne Vibration Infrasound Instrument Isolation Structural Vibration Vibration and Noise Criteria
 

Case Study – Vibration Source Investigation in Large Semiconductor Fab Facility

    ABSTRACT Semiconductor fabrication facilities contain many vibration sensitive instruments which are often in close proximity to large vibration sources. A good structural system and proper vibration isolation of mechanical equipment is required to minimize the impact from sources such as pumps, fans, piping, and ducts within the building. This paper presents a case […]...
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Construction vibration monitoring for sensitive facilities

Building expansion and densely developed campuses often require construction adjacent to highly vibration sensitive facilities such as advanced technology manufacturing, laboratories, and hospitals. The vibration generated by the construction work poses a considerable risk to the sensitive processes in these facilities, which typically need to continue operations during construction. In these scenarios it is often […]...
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Effects of frequency and depth on attenuation of ambient ground vibration.

This article discusses the effects of below-grade building placement on vibrations measured prior to design and construction. Typically, site vibration studies are conducted on undeveloped locations (grass fields, parking lots, etc.) to assess the ambient vibration conditions for a potential building site. These results, though very important, do not necessarily represent the final ambient vibration […]...
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Voids Beneath Slabs-on-Ground: Using the impulse response test to verify adequate slab support

Introduction A concrete slab-on-ground is one of the most common of all floor types.  Slabs-on-ground are popular for many applications, especially in research facilities, where they usually provide the highest-quality vibration environment.  This is because they are stiff and uniformly supported, such that they do not exhibit the resonance characteristics of a suspended slab. As […]...
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The Effect of Buildings on Ground Vibration Propagation

This paper discusses the effects of buildings on ground vibration propagation. Typically, site vibration studies are conducted on undeveloped locations (grass fields, parking lots, etc.) to assess the ambient vibration conditions for a potential building site. These results, though very important, do not necessarily represent the final ambient vibration conditions that would be observed in […]...
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