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...

Laboratory Shake Table Testing at ISEISE houses a complete dynamic analysis laboratory consisting of an APS Dynamics long stroke shake table, capable...
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...
Architectural Acoustics at ISEISE is one of only a small handful of firms offering a complete suite of acoustical engineering services tailored specif...
Structural Risk AssessmentISE’s structural risk assessment services are a natural extension of our structural dynamics services. We take the concept...
Phase I ESA\'s & Environmental Due DiligenceISE provides a broad suite of environmental site assessment and due diligence services geared towards c...
Computational Fluid Dynamics at ISEISE are experts in the field of computational fluid dynamics (CFD) and wave propagation analysis. We utilize, and h...
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...
Electromagnetic Pollution Control at ISEISE provides a complete suite of electromagnetic field (EMF) and Radio Frequency (RF) services designed to det...
The following article is an opinion piece that reflects the scientific thoughts of the author. It is my opinion based upon my review of the science an...
ISE has completed work on our laser optics test bench. The focal point is our newly built one-watt Class IV 655nm continuous wave (CW) laser capable o...
We\'re not sure how well this works, but you have the give the City of San Francisco a \'A\' for effort.This sign is located at the bottom of Lombard Str...
       ISE 2024 Statement of Qualifications (SOQ)Click on the image to the left to view our Statement of Qualifications (32.4 MB) as a PDF. You c...
The current version of the ISE Industrial Source Model (IS3) is sure to make the competitors cringe. Version 3.9 touts some highly advanced features s...
Environmental Vibration Solutions at ISEISE is a recognized leader in mechanical and dynamic vibration analysis, and has a full range of portable moda...
Acoustical Analysis & DesignISE\'s staff is formally trained in the requisite fields of acoustics, fluid mechanics, and gas dynamics allowing us to...
Air Quality Conformity at ISEISE offers a comprehensive suite of air quality and air toxics analyses geared principally towards prediction and mitigat...
Modal Analysis Services Available at ISEModal analysis is the experimental determination of the vibrational properties (i.e., normal modes) of a physi...
Historic Preservation Services at ISEISE’s historical preservation services are a natural extension of our structural dynamics services which we hav...
Environmental Impact ReportingAll of ISE’s technical services are available in a variety of environmental formats to satisfy local, state, and feder...
The ISE Rayleigh Wave (R-Wave) seismic vibration prediction model hit another milestone in 2011 in development by being able to accurately predict sur...

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.