Archive for October, 2013

Centennial Airport Update

Thursday, October 31st, 2013

by Gene Reindel

The following link provides a well-written article featuring the installation progress of the noise monitoring system at Centennial Airport in Arapahoe County Colorado.  The progress is visible to the surrounding communities as 12 fixed noise monitors, installed to measure noise from aircraft operations, and is up and running.  The system installation is continuing over the next few months with full acceptance of the system expected in early 2014.  The purpose of the system is to provide much needed data to monitor the Centennial Airport aircraft noise environment and prepare highly accurate reports and noise exposure contours related to the aircraft operations at Centennial Airport.

http://www.ourcoloradonews.com/centennial/news/centennial-airport-activates-noise-monitors/article_b56843b4-4187-11e3-952e-001a4bcf887a.html#.UnGAnELEeGh.twitter

 

 

In Memoriam

Monday, October 28th, 2013

by Mary Ellen Eagan

Laymon Miller

Laymon Miller

 

 

 

 

 

 

 

 

 

Many of us at HMMH knew Laymon Miller personally – he was an important early contributor to the practice of noise control.  Laymon did much of the early work on aviation and highway noise control, as well as industrial acoustics, as described in this biography prepared for a University of Texas award that Laymon received:

Laymon Miller, Leo Beranek and Walden Clark of BBN in Seattle with Boeing 707 in background

Laymon Miller, Leo Beranek and Walden Clark of BBN in Seattle with Boeing 707 in background

 

 

 

 

 

 

 

 

 

 

 

 

Most of Laymon’s consulting work was: (1) Noise and vibration control for HVAC (Heating, Ventilating, and Air-Conditioning) systems in buildings; (2) noise control for manufacturing plants, aimed at meeting OSHA noise regulations for the protection of workers’ hearing; (3) noise surveys and noise control aimed at protection of communities against the intrusion of excess noise from manufacturing plants, highways, power plants, airports, etc.; (4) noise and vibration control of products for customer acceptance; and (5) vibration isolation designs for achieving very low vibration levels for particular instruments or processes.

From my perspective, one of Laymon’s greatest contributions – not only to the field of acoustics, but also to the world – is Bob Miller, one of HMMH’s founders and former Chairman of the Board.   Bob mirrors not just Laymon’s passion for acoustics, but his courtesy and grace, and is a constant reminder that scientific inquiry and curiosity are a wonder.

Laymon will be missed, and our thoughts and prayers go to Bob and his family.

Founder’s Award

Monday, October 28th, 2013

by Nick Miller

At last week’s HMMH Annual Stockholder Meeting, the Founders of HMMH presented their award for excellence “In recognition of outstanding performance on a project that was uniquely challenging, technically innovative, and resulted in proven client satisfaction.”  The award was given to the project “On-Board Sound Intensity Measurements to Evaluate the Noise Reduction of Pavement Grinding, I-195, Providence RI.”  The Project Manager was J. Eric Cox, Principal in Charge was Christopher W. Menge, and the team included James E. Ferguson III, and Ryan Cranfill.

From left: Carl Hanson, Chris Menge, J. Eric Cox, Nick Miller

From left: Carl Hanson, Chris Menge, J. Eric Cox, Nick Miller

 

 

 

 

 

 

 

 

 

 

 

The purpose of the project was to prove that adequate sound reduction of I-195 road noise had been achieved by diamond grinding of the concrete bridge deck, mainline roadway, and on/off/interchange ramp surfaces. Grinding operations were conducted to reduce noise generated by traffic traveling over transverse tining. The “OBSI” measurements had to be made on 19 ramps and roadway sections, in the wee morning hours when little other traffic was using the roadways.  Client David Freeman of Maguire Group, Providence, RI said that “it worked out really well and the results [of the measurements] were used to justify a bonus to the contractor.”

More information on OBSI can  be found on HMMH’s website: http://www.hmmh.com/on-board-sound-intensity.html.