Lots of people have heard of the Horton Grand Hotel in downtown San Diego, CA. Here's a view of the hotel that not too many people see - a view from the roof of this historic building. 

ISE was involved in a forensic case that required us to do some work on top of the hotel. The view is a panoramic one close to sunset looking towards the west towards Seaport Village and the convention center. 

What's New at ISE...

Architectural Acoustics at ISEISE is one of only a small handful of firms offering a complete suite of acoustical engineering services tailored specif...
Acoustical Analysis & DesignISE\'s staff is formally trained in the requisite fields of acoustics, fluid mechanics, and gas dynamics allowing us to...
Lighting & Photometric AssessmentsISE provides a complete range of lighting and photometric services geared towards commercial and industrial comp...
ISE has again raised the environmental bar to new levels by adding Mass Spectrometry to our list of in-house air quality monitoring services. Our SRS ...
Expert Witness & Litigation AssistanceAt the heart of any forensic problem involving the laws of physics are two fundamental quantities: the path ...
Kinetic & Kinematic Analyses at ISEAt the heart of any forensic problem involving the laws of physics are two fundamental quantities: the path of ...
Structural Dynamics Analysis at ISEISE is a recognized expert in the field of structural and soil dynamics having developed several cutting-edge techn...
Environmental Impact ReportingAll of ISE’s technical services are available in a variety of environmental formats to satisfy local, state, and feder...
Here\'s a photo from the archives of the Olivenhain Dam inundation area circa 1998 prior to construction of the dam. ISE took this photo during some e...
The ISE Rayleigh Wave (R-Wave) seismic vibration prediction model hit another milestone in 2011 in development by being able to accurately predict sur...
Electromagnetic Pollution Control at ISEISE provides a complete suite of electromagnetic field (EMF) and Radio Frequency (RF) services designed to det...
Environmental Noise Control at ISEISE provides a full spectrum of acoustical consulting services necessary for compliance with environmental regulatio...
We\'ve received several inquiries on how civil modal analysis is performed and what instruments are used. Shown in the photo is ISE\'s \'modal sledgeham...
Physical Laboratory Services Available at ISEISE maintains a secure physical science laboratory traceable to standards set forth by the American Natio...
Historic Preservation Services at ISEISE’s historical preservation services are a natural extension of our structural dynamics services which we hav...
Modal Analysis Services Available at ISEModal analysis is the experimental determination of the vibrational properties (i.e., normal modes) of a physi...
Environmental Vibration Solutions at ISEISE is a recognized leader in mechanical and dynamic vibration analysis, and has a full range of portable moda...
Aeroelastic & Gas Dynamics Analysis at ISEISE is one of the only consulting firms specializing in the commercial solution of aeroelastic and high-...
Air Quality Conformity at ISEISE offers a comprehensive suite of air quality and air toxics analyses geared principally towards prediction and mitigat...
Structural Risk AssessmentISE’s structural risk assessment services are a natural extension of our structural dynamics services. We take the concept...

Featured Video Clip (Shock Wave)

A video taken by ISE showing the supersonic expansion of high pressure natural gas in a pipeline. 

The shock wave is clearly visible at the 1:00 min mark as a white cloud above the end of the pipe and produces an acoustic overpressure of close to 140 dB - which is as loud as a rocket engine.