the wad journaltm · the wad journaltm the international journal of transportation-related...

The WaD JournalTMTHE INTERNATIONAL JOURNAL OF TRANSPORTATION-RELATED ENVIRONMENTAL ISSUES

Ir~Ih~huge:p.4Newsmakers in NoiseAbatement

p. 5Press Releases

p. 6FHWA Update

p. 7A1FO4 SummerMeeting

Jul/Aug 1996

p. 8Summariesof Papers

p1. 12PennDOT Study ofRetrofit Program

p. 14Meet the Staff (PennDOT)

p. 15New Products

p. 16PennDOT Task Force onDirt and Gravel Roads

p. 18Green Sound,Green Noise, &Analytic Standards

Summertime1996 — the bestof times and the worstof times

When beautifying andprotecting soundwalL.

Pigmented, VOC compliant acrylic stains to provide anattractive, uniform color and water repellent protection.Aesthetically pleasing - anti graffiti properties.Specify Cementrate or Cementrate WB.

Graffiti resistant, pigmented coatings protect soundwalls fromvandalism.Specify Graffitlguard 2.

I EA-Sealer high solids, non-yellowing ‘wet look acrylic sealer. Solventand VOC compliant. Also available in low lustre’ finish.

I Exposed aggregate retarders create uniform etch reveals onsoundwall. Preco retarders are more economical, cleaner and lesscomplicated than acid etching or sandblasting.

The Preco Precast Division offers enhanced technical support to all of ourcustomers. Free on-site seminars are also available on concrete coatingtechnology. Call or write today for more information on how we can helpyouon your next soundwall project. &A8URMP~1Cf5TRO1COMPANV

Sound absorptive highway noise barriers are becoming specifiedmore and more. To significantly improve the appearance anddurability of these structures, more specifiers are relying onFosroc for:

Also a wide range of seaters/coatings available:

L~-1i~1Fosroc Inc.Preco Precast Division

150 Carley CourtGeorgetown, KY 40324Tel 800-645-1258Fax 502-863-4010

2 The Wall Journal Jul/Aug 1996 Issue No. 24

TheW~I!ournalTb, k na onal ,.,u,r, lot Fr,, i_anal ,. eIa’ed insi lraianaLer

Volume ‘1, 1996Issue No. 24

The Wall Journal is published six timesa year. Issues are mailed hi-monthly onor about the end of the first month in thedesignated two-month issue date.

The Wall Journal is a publication ofAcoustiCom PubI hug Corporal ion.Editorial, subscription and advertisingoiflces are located at 205 Danby Road,Lehigh Acres, FL 33936. Telephone us at941 369-0178 or fax 941 369.0451.

Submissions of papers, articles, letters,and photographs for publication shouldbe addressed to The Wall Journal, P.O.Box 1 389, Lehigh Acres, FL 33970-1 389.

EditorEl Angove

Director of PublicationsJohn G. Piper

All material submitted becomes theproperty of The Wall Journal, and maybeedited for length, clarity and accuracy.Material will not be returned withoutspecial arrangements prior to submis-sion. The Wall Journal will not be respon-sible for lost or damaged materials.

Published artk les, comments, letters,papers and advertisenients do not neces-sarily represent the views and/orendorsements of The Wall Journal. Theauthors of submitted material are solelyresponsible for the truth and accuracy oftheir submissions, and The Wall Journalcannot be held liable for any damagessuffered by our readers as a result of theiruse of published material.

Circulation is made to governmentagencies, consulting engineers, scien-tists, universities, contractors, vendorsand others with an interest in transporta-tion-related environmental issues. Read-ership is primarily in the United Statesand Canada, with growing interest inEurope, Asia and the Pacific Rim.

Subscription and advertising informationare shown on page 23.

The Wall Journal is composed in itsentirety on Apple Macintosh computersusing QuarkXPress electronic publishing

software.

Printed in the U.S.A.copyright 1996 The Wall Journal

think it’s the name of a song, or a news-paper or a magazine or a rock band —

but it’s the truth. The times are a-changin’. I can feel it. I can smell it.

I’m not as young as I used to be, butI still look pretty much like my picture.Except that I haven’t worn a suit and tiein the last six years. So, I’m not com-plaining about getting old, nor gettingleft behind, nor being lonely, nor of notgetting my share of the pie.

None of that. It’s just that I sort of feelthat there are things out there that areabout to overtake me. I feel a sort ofmounting presence of, well, evil. Notlike Satan or ghosties, but just thingsover which I have no control.

Maybe it’s all the violence and badstuff that’s going on in the world.Maybe it’s just my imagination, but itsurely makes me uneasy.

Like many of you, I watched theentire Olympic Games (which hasdelayed my publication of this issue —

sorry about that). I was absolutelyentranced by the thousands of athletesfrom all across the world, who weregiving their gutmost efforts to win atcompetitive sports.

Those kids were all healthy, good-looking, bright, muscular, talented,well-coordinated, intelligent, well-trained and totally dedicated to whattheywere doing. What a great bunch ofpeople to have on this planet!

Their enthusiasm and drive is infec-tious; it makes you happy just to be intheir presence. I want to be aroundyoung people like that. Race, religion,color, country of origin — none of thatmatters when you deal with goldenpersonalities in real people.

Conversely, I look at the lack of qual-ity in a lot of the youth of America thatI see in the streets and neighborhoodsof the cities and towns in America. Weseem to have spawned a breed of ill-educated, non-motivated, listless andhopeless youth. Their gods are rock

stars and multi-millionaire sportsfigures who nowlook down ontheir own poorand underprivi-leged.

Of course, it isnot entirely theirown fault that they are in such dire cir-cumstances. We can lay some blameon our government for this, but themilitia is not an answer to the problem.

There is a simple answer to thewhole problem in the universe. It isknown as discipline. We need a lotmore discipline in our lives. I don’tmean black boot discipline. Possibly ayear of (shudder) compulsory militaryservice would put some backbone inour youth. More likely, in view of whatsports competition has done for thosegreat Olympic heroes, a national sportsprogram for amateur athletes wouldprobably produce a higher quality ofcitizen. I’ve had my fill of overpaid andegocentric professional sports figures.

I think that my hours watching theOlympic Games have allayed a lot ofmy unrest. Those kids have resurrectedmy faith in the human spirit. You knowthat it was their sheer discipline andstrength of character that made them allchampions.

There were really no losers in themore than 1 0,000 athletes who partici-pated. All of them had already becomechampions for the millions of kids whodidn’t make it to the Olympics.

And their total humanism showeditself at the end of every hard-foughtcompetition — winners and non-win-ners all congratulated and hugged eachother in celebration of the struggle.They all showed us the way to realpeace in the world. Discipline, hardwork and love for each other.

And I think that the Atlantansshowed everyone in the world a mag-nificent show and performance whichwill probabty never be topped.

Sadly enough, Olympic athletes andterrorists coexist on the same planet. Itis now time for a real change. I

CHANGING TIMESI know that title is not unique —

The Wall Journal Jul/Aug 1996 Issue No. 24 3

Newsmakers in Noise Abatement IGARY FIGALLO HEADS NEW

HIGHWAY NOISE BARRIERDEPARTMENT FOR

INDUSTRIAL ACOUSTICSCOMPANY

Bronx, New York, June 19, 1996. The appointment of Gary Figallo to head Indus-trial Acoustic Company’s (IAC) new Highway Noise Barrier Department, has beenannounced by IAC’s President, Martin Hirschorn, effective immediately. IAC is aninternational noise control engineering and manufacturing company headquar-tered in New York and for many years has designed and constructed SoundAbsorptive NoishieldT°Barriers for highway and industrial applications.

Mr. Figallo, who joined IAC in 1994, brings more than 1 5 years of experience inthe design and construction of highway walls. He has broad experience as prod-uct manager for sound absorbing concrete barriers and is well-known in the trans-portation noise control industry.

“I look forward to continuing AC’s long presence in the design and construction

of highly Sound Absorptive Noishield Barriers for highways, at airports for jet air-craft, for transformers, pumping stations, cooling towers and many other applica-tions,” comments Figallo. “In addition,” he states, “IAC will enhance its productline by offering low cost concrete, wooden and other innovative barrier structures.The necessary alliances for this type of work have already been established. It’sexciting — we already have orders for several concrete barriers.”

Figallo notes that there are many situations where state highway authorities, orcommunities specify concrete, wood or other barrier materials, but remarks, “Wewill continue to recommend sound absorptive barriers wherever appropriatebecause they provide more noise reduction than reflective ones, and allow forlower barrier heights. Sometimes the noise problem is truck related which wouldrequire a barrier designed for the lower frequency rumble while other problemsmay be the high pitched sound from grooved pavements.” Moreover, IAC’s NVLAPcertified Aero Acoustic Laboratory can arrange for acoustical performance tests ofbarrier components or scale model barriers. The IAC Laboratory has an outstand-ing record in solving unusual acoustical and aerodynamical problems.

MORE ABOUT IAC

IAC, founded in 1949, a world leader in the manufacture of acoustical productsand systems, is headquartered in New York City with offices and production plantsin New York, South Carolina, and England and engineering sales offices in Ger-many and licensed representatives in the Far East. IAC serves the transportation,architectural, air conditioning (HVAC), industrial, medical life/sciences, powerplant and military/commercial aviation markets. I

~t,

Dear Mr. Angove:I am writing to request that you renew

our free subscription to The Wall Journal asit is a very useful and informative tool usedby our District Environmental Specialists.Please address the subscription to: Mr.William Barbel, Environmental StudiesManager, Illinois Department of Transporta-tion, 201 West Center Court, Schaumburg,IL 601 96-1 096.

Thank you for the work you do to keepall interested parties current with the newestproducts and technologies. If you have anyquestions please contact William Barbel,Environmental Studies Unit Chief, at (847)705-4122.

Very truly yours,

Duane P. Carlson, P.E.District EngineerIllinois Dept. of TransportationDistrict 1, Schaumburg, IL

By:Patrick J. Pechnick, P.E.Project and Environmental Studies SectionChief

(Ed. — Following is the kind of letterwhich does me the most good, because itadds to the size and accuracy of our data-base of readers, and makes me feel warm atthe same time. / need all the help I can get.

The letter is from Wayne Kober, Directorof the Bureau of Environmental Quality forPennDOT in Harrisburg. It is too full ofdetails to print here, but I will highlight):

Dear El,As we recently discussed, we looked

over the PennDOT mailing list for TheWall Journal and request that youupdate your list as follows:

Make These Changes to Our CentralOffice Personnel:

(Wayne then lists four name and locationchanges).

Add the Following People:(Wayne then gave me 11 new names,

which also included District Engineers).Keep Other PennDOT Personnel,

Namely:(He then verified the status of 9 names on

our database. And then he wrote):“Thank you”.

(He had that last all wrong — it’s me whoshould be thanking him, and / did. Youcan’t believe how much moving around1,800 readers can do. / really appreciatereceiving letters with mailing list info andparticularly new names. Sock it to me).

Gary Figatlo


Larson’Davis Announces New Literature:

Provo, Utah — Larson•Davis Incorporated (Nasdaq Symbol“LDII”) today announced the release of their “Superior Sound andVibration Instrumentation home page at “http://www.lardav.com”.

Larson’Davis’ initial entry to the Internet includes full text andgraphics for its product specification sheets; a calendar of upcom-ing shows featuring Larson’Davis booths; an overview to theLarson• Davis service and support policy; an e-mail link to theLarson’Davis Marketing Department for additional product andpricing information; and a comprehensive international directory ofLarson’Davis sales representatives including phone and fax num-bers, e-mail addresses and related links.

“While the current information establishes a strong presence onthe Internet,” stated the Larson’Davis Web designer Bruce Kolste,“in the near future we will be stretching the tremendous potentialof the Internet to improve access to vital information, provide inter-active product introductions, and give answers to frequently askedquestions (FAQs) for enhanced customer support.” In keeping withthe Larson’ Davis policy to remain at the industry forefront in termsof client satisfaction, Kolste continued, “We encourage all ourclients - including both current and potential customers - to visitour Web site. Let us know the features you’d like to see to help youmake more informed decisions.”

For more information contact Ron Guymon at (801) 375-01 77 ext. 168.

Provo, Utah — Larson’Davis Laboratories has published it’snewest full color 16 page brochure describing it’s full line of hand-held, portable, and permanent environmental noise monitoringproducts.

The entire Larson• Davis range is discussed. The simplest prod-ucts are the type 1 and type 2 basic sound level meters that providetime histories, interval data, and exceedance events that can beread in the field or in the office with or without the WindowsrMbased software. The four portable systems, ranging from 20 poundsto 60 pounds, provide increasing sophistication and capability. Thesystems are chosen based on moderate to severe weather condi-tions, lengths of measurement up to two weeks, ability for self cal-ibration, and weather-data collection. All functions can beaccessed and downloaded through cellular phones and modems aswell as manually or by PC hookup at the site.

The permanent monitoring systems have abilities to share com-munications between units and the central station, alarms on tam-pering, remote calibration, and a host of other features. Ldfl, CNEL,and virtually any other noise metric can be automatically andremotely retrieved by modems and telephones. Data can includewind velocity, humidity, barometric pressure, and rainfall.

For further information call or write: John Carey, Larson.Davis Lab-oratories, 1681 West 820 North, Provo, UT Tel: 801 375-0177 Fax:801 375-0182 Internet: www.lardav.com

NEW Ilrgh PerformanceTransportaflon Sound Barriers

IAC NOISHIELD~Transportation Sound Barriers:• High low-frequency panel sound absorption helps reduce un-

desirable community noise.• High sound-transmission loss assures maximum sound barrier

effectiveness.

• Tough, thermosetting, polyester, graffiti-resistant, cleanable finish.• Rugged low-weight construction.• Wind load resistance per AASHTO Guide Specifications

• Relocatable.‘Steel or aluminum constructionavailable as a free-standing barrier

or as cladding for existing noise-reflecting walls.• Laboratory tested, reports available:

ASTM E 90 Sound Transmission Loss — STC 31 to 38.ASTM C 423 Sound Absorption Coefficients — NRC 0.95.ASTM B 117 Corrosion Resistance —7000 hours, no failure.ASTM G 23 Accelerated Weathering — no degradation.

INDUSTRIAL ACOUSTICS COMPANYSINCE 1949— LEADERS IN NOISE CONTROL ENGINEERING, PRODUCTSAND SYSTEMSUNITED STATES UNITED KINGDOM GERMANY

C1160 COMMERCE AVENUE CENTRALTRADING E5TATE SOHLWEG 17BRONX, NEW YORK 10462-5599 STAINES, MIDDLESEX, TW18 4XB D-41372 NIEDERKRUCHTENPHONE: (716) 931-8000 PHONE: (0784) 456-251 PHONE: (02163) 8431FAX: (718) 863-1138 FAX: (0784) 463-303, TELEX: 25518 FAX: (02163) 80618

THE STANOARD OF SILENCE TECHNICAL REPRESENTATION IN PRINCIPAL CITIES THROUGHOUT THE WORLD.4

New Internet Home Page Environmental Noise Monitoring System


NHS Designation Act of 1995 (NHS):This act restricts Federal participa-

tion in the construction of Type II noisebarriers (barriers built along an existinghighway that are not part of a highwayconstruction project). Federal fundsmay only be used to construct Type IIbarriers that (1) were approved beforethe date of enactment of the NHS bill or(2) are proposed along lands whichwere developed or were under substan-tial construction before approval of theacquisition of the rights-of-way for, orconstruction of, an existing highway.

FHWA intends to publish an InterimFinal Rule in the Federal Register tomake 23 CFR Part 772, Procedures forAbatement of Highway Traffic Noiseand Construction Noise, consistentwith the NHS legislation.

Section 772.13(b) of 23 CFR Part772 will be revised to read as follows:“For Type II projects, noise abatementmeasures will only be approved forprojects that were approved beforeNovember 28, 1995 or are proposedalong lands where land developmentor substantial construction predated theexistence of any highway. The grantingof a building permit, filing of a platplan, or a similar action must haveoccurred prior to right-of-way acquisi-tion or construction approval for theoriginal highway on new location.Noise abatement measures will not beapproved at locations where such mea-sures were previously determined notto be reasonable and feasible for a TypeI project.”

Traffic Noise Model (TNM):FHWA is planning to release a new

highway traffic noise prediction model,the Traffic Noise Model, Version 1 .0(FHWA TNM). Release has been

delayed pending correction of program“bugs” and reduction of program runtimes.

The FHWA TNM will calculate traf-fic noise levels using totally newacoustical algorithms, as well as newly-measured emission levels for five stan-dard vehicle types, i.e., automobiles,medium trucks, heavy trucks, buses,and motorcycles. The calculations willbe based on one-third octave-bandanalysis and subsource heights fortrucks. The FHWA TNM will outputoverall a-weighted sound levels forlocations with and without noise barri-ers. It will allow for analyses of (1) bothconstant-flow and interrupted-flow traf-fic, (2) attenuation due to rows of build-ings and dense vegetation, (3) effects ofparallel noise barriers, (4) results ofmultiple diffractions, and (5) noise con-tours

The FHWA TNM will have aMicrosoft Windows interface and aninternal Computer-Aided Design Draw-ing capability. It will be designed torun on the following hardware/soft-ware:

• Processor: IBM-PC compatiblewith 66 MHz 486 and integralmath coprocessor

• Memory: 8 MBytes• Hard Drive: 300 MBytes• Monitor; Accelerated Super VGA

(1024 x 768),16 colors,small font

TNM “Look-Up Tables”:FHWA plans to distribute TNM “look-up tables” for simple applications ofhighway traffic noise prediction. Thesetables can be used for screening analy-ses or uncomplicated traffic noiseanalyses.

New “Highway-Related Noise”Measurement Manual:

FHWA plans to distribute a new noisemeasurement manual this fall. Thenew manual will replace the existing“Sound Procedures for Measuring High-way Noise: Final Report.”

Noise Barrier Listing:FHWA plans to distribute “A Sum-

mary of Noise Barriers Constructed byDecember 31, 1995,” this fall. Data isstill being supplied by State highwayagencies. Barrier “trends” data will alsobe distributed and will also be pub-lished in The Wall Journal.

OECD Report on “Roadside NoiseAbatement”

The Organization for EconomicCooperation and Development (OECD)published a report in October 1995titled “Roadside Noise abatement.” Thereport reviews the current state-of the-art and national experience with noiseabatement techniques for new andexisting roads. It presents the trafficnoise regulations and limits prevailingin the different OECD countries andprovides criteria that are used in mea-suring, predicting, and evaluating traf-fic noise. It discusses low-noise road-way pavements, noise barriers, and theeconomics of noise abatement indetail.

Copies of the report (# ISBN 92-64-14578-8) are available for$50 from thefollowing:

OECDPublications & Information Centre2001 L Street, NW., Suite 700Washington, DC 20036-4910Tel: (202) 785-6323Fax: (202) 785-0350

The reports ofmy demise havebecome greatlyexaggerated. Asyou can see, Iam back in my

accustomed column, where I intend toremain and continue to update you onwhat’s happening at FHWA.

Noise Barrier Videotape:FHWA will release a 30-45--minute

videotape this fall on noise barriers,intended for use in public forumswhere a general knowledge on trafficnoise and noise barrier examples isdesired. Copies will be distributed toall State highway agencies.


Committee Al F04 of the Transporta-tion Research Board held its 1996 Sum-mer Conference in Lisle, Illinois.Hosted by H. W. Lochner, Inc. and theIllinois State Toll Highway Authorityand the Illinois Department of Trans-portation, the conference was held July21 to 24. Over 80 participants attendedthe three days of exceptional presenta-tions, afternoon field trips in theChicago area and evening social events.

Highlighting the 1996 Conferencewere a special guest Chairman appear-ance by the inimitable DomenickBillera, a two hour interactive demon-stration of FHWA’s new Traffic NoiseModel (TNM) by Grant Anderson, thelatest on the Mayan ruins and how thismight affect highway traffic noise bar-rier design by Roger Wayson and

Michael Staiano, PennDOT’s newnoise video (a.k.a. the Osborne Tapes)by Roy Osborne and James Cowan,Testifying in Court (praised on everyConference Evaluation Form, includingJim’s) by James Cowan, afternoon toursto O’Hare International Airport’s NoiseAbatement Department, RiverbankAcoustical Laboratories of lIT ResearchInstitute and the Mainstream PumpingStation of Chicago’s Tunnel and Reser-voir Project, and three different eveningevents (we count it as four, because weare taking credit for the Tuesday nightpool game, also).

The technical discussions, which youcan read summaries of in this issue,were again of the highest quality andpainstakingly prepared by many work-ing professionals in the field of noise

and vibration. These professionalsdeserve our sincere gratitude for theexcellent work they contributed tosharing their expertise and experienceswith the conference attendees. Yearafter year, the presenters of the discus-sions work the hardest and determinethe level of success of the conference.Our gratitude is also expressed to theexhibitors and sponsors, who havebecome an integral part of these meet-ings, for their contribution to the wealthof information available to the atten-dees and to the excellent food availableat this summer’s event. I

(For further information, you may contactMichael Bruns by phone at 217 782-7077or by fax at 217 524-9356).

TRB COMMITFEE Al F04 ON TRANSPORTATIONREPORT ON THE SUMMER

RELATEDMEETING

NOISE AND VIBRATION

By Michael T. Bruns, Noise Specialist for Illinois DOT and Al F04 Committee Coordinator

Michael Bruns, Noise Specialist for the Illinois Departmentof Ken Polcak, of Maryland State Highway Administration andTransportation and Conference Coordinator, welcomes the Chairman of the Al F04 Highway Noise Subcommittee,

attendees and delivers the opening address, presents Domenick Billera of New Jersey Department of Transportationwith a plaque for outstanding service as the former Chairman of the

Al F04 Committee on Transportation Related Noise and Vibration

Eric Stusnick of Wyle Laboratories and Chairman of the Al F04Subcommittee on Aircraft Noise, presenting his paper.

A partial view ot the VendoN’ Lxhibition Hall during a morning coffeebreak, where attendees visited with vendors at their booths.


SUMMARIES OF PROFESSIONAL PAPERSPresented at the TRB Al F04 Committee 1996 Summer Meeting In Chicago, Illinois, July 21-24, 1996Hosted by: H. W. Lochner, Inc., Illinois State Toll Highway Authority and Illinois Department of Transportation

Interactive Demonstration of theFHWA Traffic Noise Model

Author: Grant S. Anderson,Harris Miller Miller & Hanson Inc.

Mr. Anderson will demonstrate thecapabilities of FHWA’s new TrafficNoise Model (TNM) in action: setup,input, calculate, barrier analysis, paral-lel barriers, and contours. The demowill show TNM’s input dialogs, graphi-cal views, and output tables — howthey work and how they interact, Thedemo will be loosely structured, so thatit can adapt to questions and sugges-tions from conference attendees. U

Public Opinion of 1-71Noise Barrier Effectiveness

Author: Lloyd A. Herman, Ph.D., AssistantProfessor, Civil Engineering, Ohio Univer-sity

The largest Ohio Department of Trans-portation (ODOT) Type I Traffic NoiseAbatement Project to date was com-pleted in Hamilton County in 1994.Concrete noise barriers totaling 5.4miles in length were installed on bothsides of the 1-71 roadway at a cost of$9.4 million, The initial publicresponse to the noise abatement pro-ject was mixed, with some residentsbelieving that the noise barriers wereeffective, while other residents believedthat the barriers made the noise prob-lem worse.

As a result of the public response,which gained significant media atten-tion, ODOT sponsored a research pro-ject, conducted by Ohio University, todetermine the nature and extent of anyproblems that may have resulted fromtbe construction of the noise barriers. Asurvey of public opinion was con-ducted to obtain the perceptions ofnoise barrier effectiveness for 1 ,200residents living in the project areawithin 1/2 mile on either side of 1-71.The results of this survey, as well as cor-relations with noise measurements, willbe presented. I

Aircraft Community Noise ImpactModel (ACNIM)

Authors: Eric Stusnick and Xin Zhuang,Wyle Laboratories

Under contract to the National Aero-nautics and Space Administration,Wyle Laboratories is developing theAircraft Community Noise ImpactModel (ACNIM) — a software packageintended for use as an adjunct to theFederal Aviation Administration’s Inte-grated Noise Model (INM). ACNIM willallow a more detailed analysis of theimpact of aircraft noise on the peoplein the communities surrounding an air-port than does INM. It accomplishesthis by coupling INM to a powerfulGeographic Information System calledGRASS (Geographical Resource Analy-sis Support System), which was devel-oped by the U.S. Army Corps of Engi-neers.The current version of ACNIM, which

runs on an Intel processor-based per-sonal computer under the Microsoft®WindowsTM operating system, has thecapability of providing a more preciseestimate of the number of peoplewithin any given aircraft noise contourthan does INM. It also has the capabil-ity of determining the number of homeswithin the contour and of determiningthe population and housing counts forsubsets of the U.S. Census database.ACNIM computes the number of peo-

ple within a given noise contour by firstcalculating, from the total populationand land area within each censusblock, the population densities of theblocks. It then applies this density tothe area within the census block that iscontained within the noise contour. Atotal count is obtained by summingover all census blocks, A similarprocess is followed in calculating thenumber of housing units within thenoise contour.

ACNIM goes one step further inimproving the accuracy of the popula-tion (and housing) count within a noisecontour, by allowing the noise analystto remove obvious non-residentialareas, such as water bodies, industrial

parks, and shopping centers, from thecalculation. This is done by superim-posing the noise contours onto remoteimagery (aircraft or satellite photogra-phy) of the region around the airportand providing a drawing tool whichallows the analyst to outline non-resi-dential areas.

An additional feature has recentlybeen added to ACNIM which allowsindividual elements of the Census’sSummary Tape File 1 (STF1) and Sum-mary Tape File 3 (STF3) to be analyzed.STF1 ‘s population categories include,for example, age, race, sex, and maritalstatus, and number of units in the struc-ture. STF3 expands these categories toinclude, for example, citizenship,ancestry, and income in the populationcategories and number of rooms perunit, type of heating fuel, and value inthe housing categories. This additionalinformation not only provides informa-tion useful for planning a residenialsound insulation program at the airportbut also information for an “environ-mental justice” analysis, should one berequired. I

PennDO’ps New Noise Video

Authors: Roy Osborne, PennsylvaniaDepartment of Transportation James P.Cowan, I NCE.Bd.Cert.. McCormick, Taylor& Associates, Inc.

This will be the first public presentationof an educational video developed byPennDOT’s Bureau of EnvironmentalQuality and McCormick, Taylor &Associates. The video will present thebasics of noise analysis, control, andpolicy used by Penn DOT for new high-way projects. It will be used at publicmeetings and any other appropriateforums where noise issues will be dis-cussed. The 14-minute video has prac-tical, real-world examples (includingsound perception demonstrations) todemonstrate the principles being dis-cussed. This will hopefully provide amodel for other states to develop suchneeded educational tools. I


Offering Testimony in Court from theNoise Expert’s Point of View

Author: James P. Cowan, INCE.Bd.Cert.,McCormick, Taylor & Associates, Inc.

It has been said that the most dreadedof experiences for most people (evenover death) is public speaking. Withthis in mind, testifying in court takes usexponentially beyond this fear becausethis experience has each word we utterdestined to haunt us for the rest of ourlives. As the law enforcement officerssay, “Each word can (and will) be heldagainst you in a court of law”. Manyattorneys have recently published arti-cles and books on expert testimony;however, only the expert in each disci-pline can appropriately relate the expe-rience to his peers. This presentationstems from the author’s experiencewith attorneys and court appearances(for clients but not in his own defense).As each of us may someday be calledto the witness stand (with or against ourwishes), this presentation will give theaudience an intimate perspective ondealing with lawyers, what to say (andhow to say it) and what not to say incourt. If no lawyers are in the audience,the honesty of the presentation will bebrutal. I

Good Fences Make Good Neighbors:Highway Noise Barriers

and the Landscape

Authors: Domenick Billera, New JerseyDepartment of Transportation, and RichardParsons and S. Hetrick,Gannett Fleming Engineers

This paper focuses on the importanceof early consideration of aesthetics inthe noise barrier design process andoutlines a case study process followedto develop a barrier system which is anenhancement to the roadway and com-munity.U

Validation of Aircraft Noise Modelsat Lower Levels of Exposure

Noise levels around airports and air-bases in the United States are com-puted via the FAA’s Integrated NoiseModel (INM) or the Air Force’sNOISEMAP (NMAP) software. Manyother countries use these or similar soft-ware. These models are generally usedto compute day-night average soundlevel (DNL) in the vicinity of the air-port, where “vicinity” usually meansareas exposed to a DNL of 65 dB orgreater. There is increasing interest inaircraft noise at larger distances fromairports as community planning andenvironmental assessments sometimesconsider DNLs as low as 60 or 55 dB.Wyle was retained by the NationalAeronautics and Space Administrationto conduct a measurement program toexamine the accurcy of noise models atdistances encompassing areas exposedto a DNL of 55 dB.Measurements were conducted at 14

sites around a major air carrier airportover a two month period. ARTS radartracking data, which provides actualflight paths and positive identificationof aircraft, were obtained for the 25days in that period. Three hundred andforty-two (342) specific aircraft opera-tions were selected for detailed analy-sis. This selection was sampled by air-craft type, stage length, straight versuscurved flight tracks, runway, and arrivalversus departure. Single-event noise,quantified by sound exposure level(SEL), was computed via INM and com-pared with measured SEL. The INMmodeling used flight paths derivedfrom ARTS data.Once the field data was collected and

the corresponding INM calculationswere performed, a statistical analysiswas carried out of the differencebetween measured and predicted SELs.While the average results were veryconsistent, and therefore support DNLanalysis, there was large variation inindividual events. The individual over-flight SEL data was characterized byspreads of 10 dB or more, that wereindependent of most of the indepen-dent variables considered, includingdistance.The event-to-event variation is larger

than can be explained by any singlemechanism. Differences due to choicesin modeling of tracks, nominal powersettings, etc., account for differences of2 to 3 dB. Aircraft position, type, weight(as predicted from stage or trip length

and associated fuel load), and nominalmeteorological conditions (analysislimited to good-weather days) werecontrolled in the analysis. There wereunknowns of actual power settings andvariations, actual engine types (ratherthan fleet nominal), turbulence, andsurface micrometeorology, that arecontinuing to be examined in this on-going project. U

NASA Advanced Subsonic TechnologyNoise Reduction Program

Author: Frank Jones,NASA Langley Research Center,Noise Reduction Program Office

Aircraft noise is an international issueprompting airports to operate with strictnoise budgets and/or curfews, therebyrestricting airline operations. Interna-tonal treaty organizations are activelyconsidering more stringent noise stan-dards which will impact the world mar-ket growth of the air transportation sys-tem and the U.S. aincraft industry’smarketability. Evidence of thisincreased stringency is the mandatedphase out of Stage 2 airplanes by theyear 2000. NASA’s noise retuction pro-gram, in cooperation with U.S. industryand the Federal Aviation Administra-tion (FAA), targets technologies toreduce the aircraft community noiseimpact by 10 decibel (dB) relative tothe state of the art by the year 2000 forfuture subsonic transports. Technolo-gies that meet these design goals willprovide the design margins for success-ful U.S. engine and aircraft growth forthe next generation of subsonic trans-ports. The program approach isdesigned to develop noise reductiontechnology in cooperation with U.S.industry and the FAA; namely, enginenoise reduction, nacelle aeroacoustics,engine/airframe integration, interiornoise reduction, and flight proceduresto reduce airport community noiseimpact, while maintaining high aircraftefficiency. This presentation is a discus-sion of the technical objectives and theaccomplishment of the NASA, FAA andU.S. aircraft industry subsonic noisereduction program. I

(continued on page 10)Authors: Juliet A. Page and Kenneth J.Plotkin (presented by Eric Stusnick), WyleLaboratones


(Papers, continued from page 9)

Stop the Whine! Narrow BandNoise Level Measurements of

Three Highway Pavements

Authors: Domenick Billera, New JerseyDepartment of Transportation;Bela Schmidt and W. Miller,Louis Berger Associates

A series of measurements were con-ducted to identify and correlate road-way surface texture and frequencycomponents of tire noise and their rela-tionship to annoyance for roadside lis-teners. U

A HITEC Evaluation of theUSG Sight and Sound Screen

Authors: Louis F. Cohn and Roswell A.Harris, Department of Civil Engineering,University of Louisville;Richard T. Kaczkowski,US Gypsum Research Center

A program of laboratory and field test-ing designed to evaluate the capabili-ties and limitations of the US GypsumSight and Sound Screen (SSS) is dis-cussed. The evaluation plan is a collab-orative testing and evaluation effortconducted with volunteer state high-way agencies, and includes a programof field demonstrations. Also discussedis a new product evaluation protocolthat has been completed and applied tothe SSS system. The current status of theproject is also to be discussed. I

Pensacola Weigh-in-MotionSite Noise Study: A Case History

Author: Win Lindeman, Florida Depart-ment of Transportation

Based on public concern expressedduring the public hearing process, thePlorida Department of Transportationwas asked to take a detailed look at thepotential impact of increased noise lev-els on adjacent property owners. Usingexisting traffic noise models to accu-rately predict the noise impact provedto be questionable so an alternatemethodology was employed. Theresults of this effort were used to iden-tify abatement needs and options. U

Noise Characteristics of PavementSurfaceTexture in Wisconsin

Authors: David A. Kuemmel, P.E., Centerfor Highway and Traffic Engineering, Mar-quette University;John R. Jaeckel, P.E. and AlexanderSatanovsky, P.E., HNTB Corp.;Stephen F. Shober, P.E. and Mitzi M.Dobersek, P.E., Wisconsin Department ofTransportation

Twelve Portland Cement ConcretePavement (PCCP) test sections wereconstructed to compare with the stan-dard PCCP and asphaltic concretepavements (ACP) to quantify theimpacts of the pavement surface tex-ture on noise, safety, and winter main-tenance. Asphalt pavements studiedincluded a Strategic Highway ResearchProgram (SHRP) asphalt, stone matrixasphalt (SMA) and Wisconsin standardasphalt.A dependency between the pavement

textures and their noise characteristicswas observed. Noise measurementsindicated that uniformly transversetined PCCP created dominant noise fre-quencies. These dominant frequencieswere audible adjacent to the road andinside the test vehicles. Careful designand construction of transversely tinedPCCP can reduce tire/road noise. Nosignificant acoustical advantages ofopen graded asphalts over the standarddense asphalt were found. U

Interrupted Flow Reference EnergyMean Emission Levels for theFHWA Traffic Noise Model

Authors: William Bowiby and SrvinivasChiguluri, Civil and Environmental Engi-neering Department, Vanderbilt Univer-sity; Roger I. Wayson and M. Martin, Civiland Environmental Engineering Depart-ment, University of Central Florida; LloydA. Herman, Ph.D., Center for Geotechnicaland Environmental Research, Ohio Univer-sity

During the period, November 1994through January 1996, the U.S. Dep—of Transportation, Research and SpecialPrograms Administration, John A. VolpeNational Transportation Systems Center(Volpe Center), Acoustics Facility, insupport of the Federal Highway Admin-

istration (FHWA) and 25 sponsoringstate transportation agencies, con-ducted the National Pooled-FundStudy (NPFS), SP&R 0002-136, titled“Highway Noise Model Data BaseDevelopment”.This presentation discusses the resultsof one portion of that study — the mea-surement, data reduction and analysisof individual vehicle sound level andspeed data for interrupted flow traffic(accelerating from stop signs, tollbooths and on highway ramps). Alsodescribed is the development of regres-sion equations for the resulting Refer-ence Energy Mean Emission Levels(REMELs) as a function of vehicle speedand vehicle type. These REMELs arepart of the data base that is the founda-tion around which the acoustical algo-rithms in the FHWA’s Traffic NoiseModel, Version 1 .0 (FHWA-TNM®) arebeing structured. U

Use of Contours for ReportingHighway Traffic Sound Levels

Author: Michael A. Staiano,Staiano Engineering, Inc.

This paper examines practical consid-erations for presenting highway trafficnoise prediction results. Predicted traf-fic noise can be reported in the form ofpoint-specific sound levels or moregraphically in the form of sound levelcontours. Contourrs have the advan-tage of being more concise and readilyunderstandable — especially to layaudiences. However, the accuracy ofthe contour lines, that is, their “width”,is often ignored. Consequently, deci-sion-making based upon finely drawncontour lines may be needlessly arbi-trary. Since contour locations are inter-polated from a matrix of location-spe-cific predictions, the required densityof the prediction points depends uponthe variability of the sound propagationconditions. The presence of propaga-tion “discontinuities” along a roadway— such as finite-length barriers, rapidgrade changes, or ground surface varia-tions— necessitate more predictionpoints for the computed contour torealistically represent the actual soundfield. I


Sound Phenomenonfrom the Mayan Ruins

Authors: Roger L. Wayson, University ofCentral Florida; Michael A. Staiano, Sta-iano Engineering, Inc.

This presentation dealsphenomenon occurringruins of Chichen Itza.

at the MayanDetails of a

recent trip to the site that includedsound measurements will be discussedand results shown. It is apparent fromthe results of this study that not onlywere these the first Indians to developwriting and an accurate astronomicalcalendar, but that their understandingof acoustics was also quite advanced.The results of this study will address theclaimed parametric amplification asdiscussed in The Wall Journal, the rea-sons for the frequency shift of the echofrom the temple, and how this mightaffect highway traffic noise barrierdesign. Also discussed will be otheracoustic phenomena that was experi-enced in other parts of the ruins such asthe ball court. U

CONTACT INFORMATION ON THEAUTHORS AND PRESENTERS OF THE

ABOVEPROFESSIONAL PAPERS

Grant S. AndersonHarris Miller Miller & Hanson, Inc.15 New England Executive ParkBurlington, Massachusetts 01803(61 7) 229-0707(617) 229-7939 (Fax)

Domenick BilleraNew Jersey Dept. of Transportation1035 Parkway Avenue CN 600Trenton, New Jersey 08625(609) 530-2834(609) 530-3767 (Fax)

William Bowlby andSrvinivas ChiguluriBowlby & Associates, Inc.2 Maryland Farms, Suite 1 30Brentwood, Tennessee 37027(615) 661-5838(61S) 661-5918 (Fax)

Louis F. Cohn andRoswell A. HarrisDept. of Civil EngineeringUniversity of LouisvilleLouisville, Kentucky 40292(502) 852-6276(502) 852-7033 (Fax)

James P. CowanMcCormack, Taylor & Assoc, Inc.701 Market St., Suite 6000Philadelphia, Pennsylvania 19106(215) 592-4200(215) 592-0682 (Fax)

Mitzi DobersekWisconsin Dept. of Transportation2000 Pewaukee Road, Suite AWaukesha, Wisconsin 53187414 521-537414 548-8655 (Fax)

Lloyd HermanOhio UniversityCivil Engineering Department141 Stocker CenterAthens, Ohio 45701(614) 593-1472(614) 593-4684 (Fax)

John Jaeckel andAlexander SatanovskyHNTB Corporation11270 West Park PlaceSuite 500Milwaukee, Wisconsin 53224(414) 359-2300(414) 359-2310 (Fax)

Frank JonesNASANASA Langley Research CenterHamptons, Virginia 23681 -0001

David A. KuemmelMarquette UniversityMilwaukee, Wisconsin414 288-3528

Win LindemanFlorida Dept. of Transportation60S Suwannee St., MS—37Tallahassee, Florida 32933-0450(904) 488-2914(904) 922-7217 (Fax)

Roy J. OsbornePennsylvania Dept. of TransportationRoom 1009, T & S BuildingHarrisburg, Pennsylvania 1 7120(717) 772-0832(71 7) 772-0834 (Fax)

Juliet A. Page andKenneth J. PlotkinWyle Laboratories2001 Jefferson Davis Highway, Suite 70Arlington, Virginia 22202-3604(703) 415-4550(703) 415-4556 (Fax)

Richard D. Parsons andS. HetrickGannett Fleming, Inc.P.O. Box 67100Harrisburg, Pennsylvania 17106-7100(717) 763-7211(717) 763-8150 (Fax)

Bela Schmidt andW. MillerLouis Berger & Associates, Inc.100 Halsted StreetEast Orange, New Jersey 07019(201) 678-1960 ext. 471(201) 672-4284

Stephen F. ShoberWisconsin Dept. of Transportation3502 KinsmanMadison, Wisconsin 53707608 246-5399

Michael A. StaianoStaiano Engineering, mc,1923 Stanley AvenueRockville, Maryland 20851(301) 468-1074(301) 468-1262 (Fax)

Eric Stusnick andXin ZhuangWyle Laboratories2001 Jefferson Davis Highway, Suite 70Arlington, Virginia 22202-3604(703) 415-4550(703) 415-4556 (Fax)

Roger L. Wayson andM. MartinUniversity of Central FloridaCEE Dept., P.O. Box 162450Orlando, Florida 3281 6-2450(407) 823-2480(407) 823-3315 (Fax)

with acoustic

I Sound and Vibration •L~ FOR RENT •II OR LEASE •

Instrumentation a

To help you meet today’s capital-spending constraints, we will work withyou on whatever ittakes— Rental, Leaseor Lease Purchase — to get you theequipment you need.

From single instruments to com-plete systems, we otter Outdoor NoiseMonitors, SLMs, FFTs, Dosimeters,RTAs, Tapping Machines, ReferenceSound Sources, DAT Recorders, Mul-tiplexers, Human-Body Vibration Ana-lyzers, Level Recorders, Micro-phones, Calibrators, and more.

Our rental and lease plans are flex-ible enough to meet your needs. Ourrates are reasonable. And you still getour expert engineering assistance—evenpaid on-site personnel are available.

Strike a deal with us. And get onwith your job.

Call today.

SCANTEK INC.916 Gist Avenue

Silver Spring, MD 20910Tel: (301) 495-7738 FAX 7739


A growing complaint throughoutPennsylvania is noise related to high-ways. Unfortunately, due to populationgrowth and increased single occupancyvehicle use, roads once less traveledhave become main thoroughfares. Theprimary source of noise for many resi-dences is traffic along these existingroadways in Pennsylvania.

The reduction of traffic noise alongexisting highways is termed “RetrofitNoise Abatement or Type II Abatement”.From a noise standpoint there are two(2) types of noise abatement projects:

Type I highway improvement projectsinclude those projects which involve theconstruction of a highway on new loca-tion or the physical alteration of an exist-ing highway which significantly changeseither the horizontal or vertical align-ment or increases the number of throughtravel lanes. For these types of projects,federal regulations and our policyrequire that we evaluate potential noiseimpacts and incorporate noise abate-ment measures as part of the project if

such measures are determined to bewarranted, feasible, and reasonable.

Type II (Retrofit) projects include pro-jects for providing noise relief along anexisting highway. The latest federal reg-ulations (The National Highway SystemDesignation Act of 1995) allow (but donot require) us to spend federal funds forthis type of abatement only if the prop-erty to be protected was substantiallydeveloped prior to the acquisition ofright-of-way for or construction of theoriginal highway. Because of other morecritical needs for our available funds(roadway reconstruction, bridge deckreplacement, safety improvements, etc.)our policy has been (and remains) thatwe will not undertake retrofit noiseabatement pro

The Pennsylvania Department ofTransportation recognizes the lack of anactive Type II program as a concern notonly to the Department, but the publicas well. As a result, the Department’sBureau of Environmental Quality under-took a comprehensive Retrofit Noise

Barrier study in November of 1993. TheDepartment devised a three (3) phaseprocess to provide an informational baseand study a Type II program.

Phase I of the study was a nationwidesurvey of Type II programs. This phase ofthe study was completed in April 1994.Utilizing survey questionnaires and tele-phone interviews, it was determined thattwelve (1 2) states have had a RetrofitNoise Policy implemented at one time.It was determined that approximately200 miles of Retrofit Noise Barriers havebeen constructed nationally. Of thestates evaluated, funding for the Type IIbarriers varied, however it was sug-gested not to implement a Type II pro-gram without identifying a fundingsource first. The twelve states all hadvery explicit eligibility requirements andprioritization methods. Also it was sug-gested that once a policy is establisheddo not deviate from the standard.

Phase II of the study was a statewideassessment of need. This phase wascompleted in December 1994. This

PennOOTStudy of Retrofit (Type U) Noise Barrier ProgramBy Roy J. Osborne, Environmental Analysis Division, Pennsylvania Department of Transportation


phase incorporated information from theDepartment’s Roadway ManagementSystem (RMS) Data and the GeographicInformation System (GIS). Informationfrom these two data systems, in con-junction with 1990 Census data wereused to produce mapping exhibiting iso-lines of noise impacts throughout Penn-sylvania.This enabled the Department to providean analysis of potential statewideneed/impact for retrofit noise barriers.The analysis showed an overwhelmingneed for Type II abatement alongNational Highway System roadways inPennsylvania. The conclusion of thisphase was the illustration of statewideapplicability and need for Retrofit NoiseBarriers.

Phase III of the study was the devel-opment of a draft retrofit noise barrierprogram. This phase was completed inNovember of 1995 and presented to theState Transportation Commission I heobjective was the development of pro-gram alternatives which could be con-sidered for adoption. Throughout thisphase input from the MPO’s in Harris-burg, Philadelphia, and Pittsburgh aswell as from a Subcommittee of the

Transportation Advisory Committee wascontinually solicited, and used to guidethe study. A proposed decision supportprocess consisting of eight (8) steps wereidentified during this phase, such as;identify programmed projects, eligibility,detailed noise analysis, prioritization,noise abatement public involvement,visual screening evaluation, visualscreening public involvement, and con-struction. Utilizing this information vari-ables were identified and alternativeconcepts developed, The Departmentanalyzed the potential use of “VisualScreening” for those areas that may beeliminated during the prioritizationprocess.

The Department is currently complet-ing the administrative record of thestudy which will provide more detailedinformation. Presently no funding sourcehas been identified, therefore no Type IIprogram will be implemented. The iden-tification of a funding source isextremely important when you considerthe financial impact of providing suchabatement. The average cost of provid-ing Type II abatement will range from $2to $ 3 Million per mile, and potentiallymore if the barrier is constructed on

structure rather than simply groundmounted. Due to the financial impact ofType II Barriers the Department has ana-lyzed the potential use of “Visual Screen-ing” which would cost approximatelyhalf as much. Although the insertion loss(noise reduction) wouldn’t be as great, itwould still provide a screen between thenoise source and the receptor

Due to the lack of a revenueenhancement, no program will beimplemented. Until such time as a fund-ing source is identified, the Departmentwill not consider the possibility ofadopting a Retrofit Noise AbatementProgram. However, if additional statetransportation revenue is identified as afunding source, the pro gram will go for-ward. If implemented, a four year pilotprogram with a target of $2 Million peryear may be proposed in order to evalu-ate the program’s effectiveness. I

(For further information, you may contactthe author by phone at 717 772-0832. Theabove article has been reprinted here withthe permission of Environmental Express ,apublication of the Bureau of EnvironmentalQuality, Pennsylvania DOT).

JJJ CARSONITE Leath’ig The WayThrough Innovation Presents- -

A SQUND SQLLYFR~NIMThe Carsonite Sound Barrier System (SBS), made from aglass reinforced composite filled with recycled tire crumb offersa complete solution to your environmental problems. Byreducing both noise and waste materials Carsonite becomesan environmentally sound solution.

* STRUCTURE MOUNTED * EASILY INSTALLED

* UTILIZES SCRAP TIRES * GRAFFITI RESISTANT

Meets and exceeds the guidelines set for soundtransmission coefficient, noise reduction, and wind

load requirements by AASHTO and State Departments.

FOR MORE INFORMATION CALL1-800-648-7916

~ CARSONITEINTERNATIONAL

10 Bob Gifford Blvd • P0 Box 98- Early Branch SC 29916-0098FAX (803) 943-3375

____________________________________________ 3o~TWJo1~96

Photo features one of Carsonite’s newest completed proiects inLas Vegas. Nevada on 1-15 southbound at the Sahara Blvd. exit.

© 1995 CarsonftelnterflaSoflal . All R~ht9Reee~ved


MEET THE STAFF — PennDOT’s “Air Quality,By Roy J. Osborne

The Bureau of Environmental Quality is comprised of three Divi-sions, the Environmental Analysis Division, the Waste ManagementDivision, and the Policy/Project Development Division. Within theEnvironmental Analysis Division three “Groups” of varying technicalexpertise exist. One of these groups is the “Air Quality, Noise andVibration Group”.

A primary focus of the Air and Noise Group is to continuallyimprove the technical services provided to our customers. The grouprecognizes that customer service is a top priority, and we will con-tinually strive to improve in all facets of our technical areas to serveyou better.

The Air andNoise Group has a compliment of three staff members,James Byers, Roy Osborne, and Mark Lombard.

James Byers is the Air~Noise and Vibration Group Leader. Jimbrings twelve years experience to the Department and holds a Bach-elors of Science Degree from Indiana University, as well as a MastersDegree in Regional Planning from the Pennsylvania State University.Mr. Byers is an Armed Forces Veteran having served Honorably in theUnited States Navy.

Roy Osborne is an Environmental Planner II and has held the posi-tion of Noise and Vibration Specialist for three years. Roy holds aBachelors of Science Degree in Environmental Biology/Biology fromLock Haven University. Mr. Osborne has served nine years Honor-ably in the U.S. Armed Forces, and is currently active in the U.S.Army Reserve.

Mark Lombard is also an Environmental Planner II with three yearsas the Air Quality Specialist for the Group. Mark holds a Bachelors ofScience Degree in Environmental Land Planning from ShippensburgUniversity. Mr. Lombard has also served in the U.S. Armed Forces,having served Honorably in the United States Navy.

Noise and Vibration Group”

The Air, Noise and Vibration Group provides technical assistanceto the Engineering Districts as well as Central Office on a wide rangeof Air and Noise Issues. Assistance may be provided on a project spe-cific basis as well as through policy development and training. Inaddi tion, the group administers six Statewide Open End Contracts forEnvironmental and Engineering services. The Group also participateson several State and National committees, such as the Air QualityExecutive Committee, the Transportation Research Board, ProductEvaluation Panels and several research foundations.U

L to R: Mark D. Lombard, James B. Byers and Roy 1. Osborne

(If you wish further information, Roy Osborne may be reached byphone at 717 772-0832 and fax at 717 772-0834).

Two-SkIed Sound-AbsorptivePanelsComply With Aesthetic Treatment,Freeze-Thaw,Salt Scaling andAcceleratedWeathering Requirementsof Indiana Department of Transportation

The Reinforced Earth Company8614 Westwood Center Drive, Suite 1100

Vienna, Virginia 22182Tel703821-1175 Fax703821-1815

•S••• re~nfarcedettrth®

Write, fax or phone for further project informationor to receive literature or design details

ATLANTA BOSTON CHICAGO DALLAS DENVER LOS ANGELES ORLANDO SEATTLE


Whisper-GripWhisper-Grip is a thin coating of 2-5

mm, which can be applied to bothasphalt and concrete. Whisper-Grip con-sists of a two-component epoxid basedbinding agent in conjunction with fineaggregate of a high PSV-value. The bind-ing agent is applied in metered quantitiesto the dry, brushed road surface, bymeans of an electronically controlledtransverse application system. Theadvance of the applicator vehicledepends on the amount of resin appliedper m2 of road sur face.

The aggregate is spread onto the resinimmediately. The grain size is 1-2, 2-3 or3-4 mm. depending on the amount ofresin used. Any material that has notadhered after the binder has hardened, isremoved by sweepers. The Whisper-Gripcan then be driven on immediately.

The excellent adhesive properties ofthe binding agent both on the road sur-face and in respect of the aggregateensure a long maintenance free servicelife.

Improved skid-resistance withWhisper-Grip

Whisper-Grip provides existing roadsurfaces with both micro and macro tex-ture. The micro texture gives the road sur-face its sharpness and thus increases thefriction between tyre and road surface. Amacro texture of between 0,2 and 3 mm.provides the road surface with excellentdrainage properties which are compara-ble to porous asphalt. Any water that ispresent on the surface is rapidly dispersedfrom the contact area between tyre androad.

Whisper-Grip has an optimum microand macro texture with extremely highSRT or SFC value. It has been establishedthat accident figures are clearly reduced,particularly in the wet (see sketch).

Whisper-Grip reduces tyre noiseUnfavourable mega textures of the

road surface generate a droning/boomingnoise when in contact with tyres.

On theother hand excessively smoothsurfaces generate a whistling noise, i.e.the so-called air pumping effect. Whis-per-Grip works in two ways:

Mega textures which have an un-

favourable effect and generate noise areevened out by the Whisper-Grip. Theoscillation of the tyre profile is thusdampened and the droning reduced (seesketch).

The surface is, in addition, providedwith numerous small chippings distri-buted randomly. The air between the tyrecontact area/road surface can thus escapeat all times without pressure, reducing theair pumping effect.

Measurements carried out in accor-dance with method DIN-ISO 362 andalso using the tyre noise measuring vehi-cle, demonstrate a significant reductionin tyre noise of 2-5 dB(A) with the DIN-ISO method, and 3-8 dB(A) for the tyrenoise measuring device. ~

(Whisper-Grip was developed in Ger-many. For further information, contact:

Marvin SchneiderConstruction Technology Division

1052 Lancaster AvenueRosemont, PA 19010

Tel. 610 527-2010Fax 610 527-6046).

~SoundOtt1M Noise Barrier SystemByCORTEC

COR TEC COMPANY2351 Kenskill Avenue

Washington Court House, Ohio 43160Fax 614-335-4843

~SoundOff” i~a registeredtrademark of DyrotechIndustries.

Sound Off” Offers You: For More Information or a Price Quote,+ Outstanding Noise Protection (Exceedsall SIC and Perfor- Contact COR TEC’s CustomerService at

manceBasedSpecifications). 1-800-879-4377+ Light Weight, making it ideal for useoverbridges (Under 5

poundsper squarefoot).+ Simple and Easy to Install (50 square feet/manhour of labor).+ Graffiti Resistant, MaintenanceFree SurfaceFinish.+ 20 Year Warranty Against Surface Color Fading+ 25+Yearsof ExperienceMaking Panelsfor the Transportation

Industry.


Twenty eight thousand miles ofunpaved roads provide local service toPennsylvania’s rural residents and themajor enterprises of agriculture,tourism, mining/mineral industries andforest products. Although they are inex-pensive to maintain, loss of fine materi-als from the roads and their drainageareas creates dust and sediment.

Dust is both a nuisance and a pollu-tant. Sediment is one of the greatestsources of pollution to waters of theCommonwealth. Excessive amounts ofsediment can adversely affect aquaticlife in many ways. Sediment cansmother species of plants, insects andfish eggs and destroy the habitat theyrequire.

History ~fTask, Force1990 - Anglers in Potter County,

reported streams were being hurt bysedimentation conveyed in dirt roaddrainage. Turbidity was so high, peoplehad to travel elsewhere to fish for trout.

1991 - James H. Byron of Pennsyl-vania Trout, a Council of Trout Unlim-ited, arranged a “Northcentral ErosionConference.” It was attended by gov-ernment agencies and concernedenvironmental groups. Effects of sedi-ments on streams were brought to theforefront of environmental concern atthat meeting.

1991 - The Rural Technology Assis-tance Program conducted a meeting ondrainage and maintenance of unpavedroads. The meeting was sponsored bythe Potter County Conservation Dis-trict and Trout Unlimited,

1991 - Ademonstration to stabilizebanks by hydro-seeding was funded byTrout Unlimited and Butterkrust Bak-eries of Sunbury, PA. Specializedequipment for that work was providedby Penn Lines Utilities and The PANational Guard.

1993 - A series of meetings were heldto discuss how to control runoff from

Roads

unpaved road drainage areas. Pen-nDOT, as administraters of the Munici-pal Services funding program, wasselected to head the statewide effort.

1993 - The Task Force On Dirt andGravel Roads was formed and the fol-lowing work groups were appointed:‘Scope of Problem”, “Training”, “Mon-itoring” and “Road Maintenance Stan-dards, Techniques, Demonstrations”.

j~jjforce Participants:Department of Environmental Pro-

tection, DCNR - Bureau of Forestry,Fish and Boat Commission, GameCommission, PA Association of Town-ship Supervisors, PA Council - TroutUnlimited, PA County ConservationDistricts, PA Environmental DefenseFoundation, PA House and SenateStaffs, PA Federation of Sportsmen,Penelec Power Company, PennzoilProducts, PennDOT, US Fish andWildlife Service, US Forest Service.

PennDOT’s Task Force on Dirt and GravelServingPennsylvania’sindustriesand citizenswithenvironmentalguidancefor managersofunpavedroads

By Wayne B. Kober, Chair, PennDOT Task Force on Dirt and Gravel Roads

4

itTA

(continued next page)

Fi~1i:iThe ~!41In~U,

Lt...JSOri i Noi Tiers

a~.

With morethan50 yearsof provenperformancein the manufactureofproducts for building construction and highway traffic noise abate-ment,Durisol haslong beenestablishedas aworld leaderof qualityconstructionsystemsat competitive prices. Our clients are servicedfrommanufacturingplantsin the 14 countrieslistedat right.

Manufacturing licenses are available in selected geographiclocations. We cooperate in materials research, processtechnologies, product and application development, designand engineering, and international marketing and sales.

Phone, fax or write for full details.World Headquarters

DURISOL INTERNATIONAL CORP.95 Frid Street, Hamilton, Ontario L8P 4M3,

CanadaTel. 905-521-0999 • Fax 905-521-8658


GoalsConduct statewide evaluations to

determine the extent of unpaved roads’adverse affects on streams protected as“Exceptional Value” and “High Qual-ity” Waters.

Develop an interim reference man-ual for road managers.

Address the circumstance of environ-mentally harmful products beingincluded in state purchasing contractswithout adequate safe guards andwarnings.

Develop a multi-media training pro-gram on environmentally sensitivemaintenance of unpaved roads andmake this training easily available toroad managers.

Document or develop new ex-amples of dirt and gravel road manage-ment practices that establish the valueof considering environmental ramifica-tions.

Develop maintenance standards fordirt and gravel roads that include con-sideration of environmental valuesand consequences of their loss.

AchievementsUsing maps prepared by a PennDOT

funded contract, Trout Unlimited vol-unteers are field verifying the extent ofand locations where drainage from dirtand gravel roads adversely affectsstreams classified as special protectionwaters.

“Controlling Sediment PollutionFrom Light Duty Gravel/Dirt Roads”was produced by the Indiana CountyConservation District using an Environ-mental Protection Agency 319 grant.

A PennDOT product evaluationboard now requires vendors offeringnew products to include data on theaffects of their ingredients on the nat-ural environment; future work of theboard will include consideration ofproducts already on the purchasinglists.

The Transportation Institute at PennState is working with Task Force mem-bers to prepare manuals of “Best Man-agement Practices.” Correlationsbetween the functions of natural sys-tems and road maintenance are beingprepared by the Fish and Wildlife Unit.The Local Technology Assistance Pro-gram will present this material to roadmanagers.

SOUND FIGHTER® SYSTEMS

Staff of the Mid-Atlantic UniversityTransportation Center at Penn Stateis soliciting conservation and trans-portation agencies for colored slidephotographs and cost figures ofunpaved road projects that demonstratethese values.

The Task Force offered guidance toPennDOT District 2-0 during planningof road upgrades for Card Creek Roadin Potter County. Card Creek Road waspart of a group of roads which wereimproved and then turned back toRoulette Township.

In conjunction with preparation ofthe training program, individuals at thePennsylvania Transportation Instituteare identifying specifications withinPennDOT manuals that are inconsis-tent with best practices. R

• STC-33, Based on E-90 Certified Tests• NRC 1.05, Based on ASTM C-423 Certified Tests• Basic Building Block Design

‘No Rust, No Rot, No Stain‘Light Weight‘Non-Conducting‘Graffiti Removes Easily‘Cost Effective‘Any Color Available—No

Painting!

To obtain further information, contact:Wayne W Kober

ChairmanTask Force on Dirt and Gravel Roads

1009 Transportation & Safety Bldg.Harrisburg, PA 17120

Tel 717 787-1024Fax 717 772-0834

The PowerinYour Hand!

.iWNorsonic -~ Control.

Now you can have a handheld soundlevel meter calculate thesound powerfor you. It has never been easier thanwith thenew sound power module forour sound level meter SLM 116. Nofurther need for special locations orcostly instrumentation!Interested? Call today to get all thedetails!

~SCANTEK, INC.916 Gist Ave., Silver Spring, MD 20910Phone 301/495-7738, FAX 301/495-7739

In UseWorldwide21 Years!

SOUND FIGHTER® SYSTEMSJ INC.6135 Linwood Ave. • Shreveport, LA 71106(318) 861-6640 • FAX (318) 865-7353


Green Sound, GreenNoise and Analytic StandardsBy Frank HodgsonCopyright 1 996 The Kilo Foundation, Inc.

This document is an appeal for theuse of proven scientific methods for theevaluation and design of commerciallyrelevant sound structures. Theseinclude sound barriers, baffles, grates,frequency shifting surfaces and otheruseful structures. This document alsosuggests nomenclature that may beuseful and outlines areas of study thatshould be productive and helpful tothose concerned with the design ofsuch physical structures for the modifi-cation of ambient sound.

The current and popular practice ofmeasuring energy amplitudes in narrowfrequency bands should be abandonedin favor of obtaining accurate fre-quency profiles, plotted on paper, inthe field when possible, from commer-cially available modern oscilloscopesand/or from software packages such asHiQ available from National Instru-ments (800 433-3488). The HiQ math-ematical package runs on most PC andMac personal computers. For measure-

ments in the field a good reliable ACpower source such as Statpower equip-ment (604 420-1 585), which is a bat-tery powered source, can be used.Such power sources have the advan-tage of being silent. The current mea-suring methods obscure much of thecritical detail, conceal the creation ofnew frequencies and generally are notoptimum approaches to data acquisi-tion.

The work done by Herb Chaudiereand others in documenting the so-called “picket fence” effect is mostnoteworthy. These publications cangenerally be summarized by statingthat regardless of impinging frequencyspectra, much of the reflected energyhas been converted to a frequencyroughly twice that of the gap width,that is, the distance between individualpicket slats. These notable publicationsare of particular interest when consid-ering the use of narrow slots, as hasbeen reported by this author in The

Wall Journal, as the phenomena cer-tainly also occurs in higher, inaudible,frequencies. Restated, the use of nar-row slots that resonate at inaudible fre-quencies can convert audible frequen-cies upward to inaudible frequencyranges.

Thus, the transformation of audiblefrequencies into higher inaudible fre-quencies, with the concurrent reduc-tion in audible sound levels, wouldseem to be a common event given thediversity of structures in many urbanareas. The amount of energy convertedwould normally seem to be quite small,however, as in most cases the effect isincidental, the structure not havingbeen designed to optimize this result.The design of suitable structures whichwill enhance this effect would seem tobe a most attractive objective for engi-neers concerned with the design ofsound walls.

Pursuant to the examination of thiscritical area of study, it is suggested that

EEFCfl.E.EN®

CLAY WARNERREPRESENTATIVE

REEN WALL SYSTEMS, N.A.? OAKBROOK PARKWAY

ORCROSS, GEORGIA 30093TEL 770-840-7060FAX 770-840-7069

THE NATURAL AL


three general terms be adopted for thedescription of sound frequencies thatinclude those which extend below andabove audible frequencies. These termsare defined as follows:

Natural Green Sound. In the broad-est sense, natural green sound isdefined as sound frequencies whichare, or which can be created, withouthuman action or intervention andwhich extend below and beyond therange of frequencies to which humansare perceptive. Natural green soundalso includes those sounds which resultfrom human action or interventionwhich effectively duplicate or whichclosely mimic such sounds.

Green Noise. Green noise is definedas any natural green sound which isgenerally recognized as being unpleas-ant because of its amplitude and/orcontent. Obviously in many cases whatconstitutes green noise is very subjec-tive. In general, as amplitude dimin-ishes normally as the distance from thesound source is increased, it becomesless and less likely that the sound canstill be characterized as green noise.Another way to view the situation is to

envision a set of concentric envelopesof sound, the characteristics of whichare essentially constant on the surfaceof each imaginary envelope. For agiven observer, one single envelopewould represent a theoretical boundaryat which the natural green soundchanges from green noise to greensound.

Green Sound. Green sound isdefined as the difference between nat-ural green sound and green noise. It issound which is generally recognized asnot being unpleasant. Agaip, in manycases, what constitutes green sound isvery subjective. In general, greensound does not normally includemusic.

It would seem most desirable tobegin to measure and to document indetail the broad range of natural greensounds which are most common. Ofequal importance is the determinationof the frequency response characteris-tics of common structures, particularlythose which can be routinely integratedinto the design of large man-madestructures. Slotted structures whose gapwidths are half wave lengths which are

well above audible frequencies, say 1/8inch gap widths and narrower, are ofparticular interest. These measurementsshould extend well into the inaudiblerange, say to 50 kHz, to insure that thefinal designs fully utilize the neededfrequency transformations.

These transformations have thepotential of substantially reducing theamount of energy in the impingingaudible frequency ranges. Again it mustbe stressed that to be of real value, fre-quency profiles for the specific soundsources and the true frequency spectraderived from specific structures shouldbe determined. These can be plotted ingraphical form on paper, preferably asthe sound is recorded in the field ifrequired.

The result of such an analyticalapproach to the design of sound wallsand related structures is that the char-acteristics of given structures can besystematically compared with specifictypes of green sound with the objectiveof suitably modifying the frequencyprofile of the structure so that the netresult is the creation of a form of green

(continued on page 20)

SQU~llT!tAP®SOUND ABSORPTIVE BARRIER:The CommonSenseSolution to NoiseAbatement— Outsideand Inside

V ExcellentAcousticalPeiforinance:NRCup to 1.0 &¶C 40.

/ Costcompetitivewith reflectiveproducts.V Extremelylight-weight (32lbs. percu. ft.). Excellent

forbridges,tall walls,andretro-fit panels.V Easily integratedinto mostwall andbarrier designs.V Excellentlife-cycleperformance—

durable/washable/graffitiresistant/9flameii smoke.

S (I U ~II T 11 j~P ACOUSTICAL APPLICATIONS

1-lospitalsFacilitiesDormitoriesAuditoriumsRestaurantsConcert HallsAthletic FacilitiesAirport Terminals

Noise BarriersConvention CentersMuseums & LibrariesCorrectional FacilitiesIndustrial ApplicationsPower Generation FacilitiesAll Transportation Systems

For more information and licensing opportunities, contact:CSI, 3300BeeCaveRd., Ste.650, Austin~IX 78746

Pb: 512-327-8481 Fax: 512-327-5111

The Wall journal Jul/Aug1996 Issue No. 24 19

(Green Sound, continued from page 19)

sound, To some degree this presumesthat a given environment with objec-tionable levels of noise has fairly pre-dictable frequency profiles. Many situ-ations involving highway noiseabatement would seem to qualify forthis approach.

The equipment that is needed torecord on a dynamic basis is moreexpensive than that required to make“snap-shot” frequency profiles. Bothapproaches howeverare of comparablemerit. Most of the commercially avail-able oscilloscopes which are of inter-est, are very portable and rugged, lend-ing themselves to use in the field underdifficult conditions. For those thatrequire AC current, the use of suitablebattery sources is a reasonableapproach.

Analytic MeasurementsThe generation of the needed fre-

quency profiles is not an unreasonableeffort and given their utility and thatfact that such information is generallynot available, there is a measure ofurgency in acquiring and publishingthem. It is hoped that a measure of stan-

dardization in the cataloging of the var-ious types of profiles can be achieved.For the serious investigator the follow-ing equipment is recommended,although a great variety of commer-cially available equipment will alsoserve equally well. The Gould 1600series oscilloscopes with built-in hardcopy capabilities (216 328-7400) havea sample rate of 100 mHz. These unitscurrently cost less than $5,000 and per-mit the taking of a “snapshot” of the fre-quency profile being recorded. Themore sophisticated units allow a con-tinuous recording of the events.

When such equipment is used witha good microphone which is suitablefor recording ultrasonic frequenciessuch as the Bruel & Kjaer 4135 (havinga range of 2 Hz to 100 kHz with adynamic range of 96 dB), excellentresults should be routinely obtainable.The Gould 1602 scope has a samplesize (not to be confused with samplerate) of 1 024 for FFT (Fast Fourier Trans-forms). In simple terms, the sampleselected (usually 1/1 000 of a second or1/100 of a second — called the sweeptime), is sampled at intervals of I/i 024

across the screen. Some scopes havelarger sample rates but the lower rate isfine. What this means is that a 400 Hzsignal with a sweep time of 1/100 sec-ond puts 4 full sine waves on the faceof the scope. This means that the cal-culation for the frequency by FFT has256 data points on each sine wave toanalyze. The result is that the frequencyshould be known to an accuracy of bet-ter than .01%. Given the great sensitiv-ity of this type of equipment, the verti-cal scale, the amplitude of the variousfrequencies calculated by FFT, can alsousually be displayed on a vertical scaleon the scope for clarity and conve-nience.

Fast Fourier TransformsTypically the FFT calculation plots

a series of vertical lines to indicate theamplitudes of the various frequenciesmeasured. The actual calculation isbased upon the fact that a sine wavecan be characterized by a mathemati-cal series. $

(Frank Hodgson will welcome inquiry anddiscussion on the subjects of this article. Hemaybe reached at 415 493-5511).

Community noise measurement,Leq~Ln, Ldn, Lmax, Lmjn, Peak, Statistical Analysis,

Microphones, Precision sound level meters,Octave-band, 1/3 octave-band, and FFT analyzers,

Portable real-time analyzers,Vehicle pass-by systems, Order analysis,

Interior noise measurements,NVH measurements, Human vibration,

NC, AC, loudness, reverberation time measurements,Remote access and operation by cellular phone, modem, RS-232,

Airport noise systems, Aircraft fly-over and FAR 36,Sound power determination by sound intensity,

meets ANSI, IEC, SAE requirements,Building acoustics.

Surfing the WebSubject: More Mayan AcousticsDate: 14 May 1996 15:39:50 GMTFrom: [email protected]

(Wayne Van Kirk)Organization: Prodigy Services CompanyNewsgroups: sci .archaeology.mesoamerican

NEWS ALERT!!!The Journal of the Acoustical Society of

America, Feb 1996 issue, has published anarticle “Acoustical Resonances of AssortedAncient Structures”

Abstract“Rudimentary acoustical measurements

preformed inside six diverse Neolithic andIron Age structures, revealed that each sus-tained a strong resonance at a frequencybetween 95 and 120 Hz (wavelength - 3m).

Despite major differences in chambershapes and sizes, the resonant modal pat-terns all featured strong antinodes at theouter walls, with appropriately configurednodes and antinodes interspersed toward thecentral source. In some cases, interior andexterior rock drawing resembled theseacoustical patterns. Since the resonant fre-quencies are well within the adult malevoice range, one may speculate that someforms of human chanting, enhanced by thecavity resonance, were invoked for ritualpurposes.” I

-

LARSON~DAVlS

1681 West 820 NorthProvo, UT 84601

ph. 801-375-0177 • fax 801-375-0182e-mail mkt @lardav.com. http://www.lardav.com/


The Walrus says: “I’m off on my summer

Some of the good stuff you might want toread again, now and then:

Noise Barrier Construction ForecastSummaries of Professional PapersNoise Barrier Project ReportsFundamentals of SoundNew Product Press ReleasesTRB Al F04 Committee MeetingsState DOT Noise Barrier ProgramsFHWA Noise Model UpdatesNoise Abatement in Other CountriesAirport Noise ControlConstruction Trends in Noise BarriersProduct Approval ProcessFHWA History of Barrier ConstructionMaterials Test StandardsRail Transit Noise ControlAnd a Bunch More

vaca/lon, soa~it~iyup some rays before IZ~ave/oye//aci(In/o L4~a/co/c/~icy wa/er up

nor/J~S’~7f}yooc/frienc/ I?o,~Ijuffmoose is

wa/ci~ithyover /J~,sspace for me wLfe ./ie

a/so fays on a foaJoffa/for /Jje wi~/er”.

Hi. My name’s Gus. I’m one of thestaff around here, along with Bob Bull-moose, Walrus and Bashful. El calls usthe Animal House.

My job is to make sure that every-one who gets The Wall Journal is apaid-up subscriber if they’re from theprivate sector, and if they are regis-tered if they are government people. Ihate it when people don’t follow therules. See page 23.

I don’t want to have to tell you again.

We build attractive, economical, functional, extremely durable soundwalls for a fraction ofthe cost of castles. Call us and we’ll tell you how to fit one of our walls to your needs andto your budget. We’ll also tell you how utilization of silica fume admixtures and the latestgeneration of waterproofing agents make the Faddis Noise Barriersystems truly a product you could build and forget. Much like the FADDISancient castles, these sound walls will stand the test of time. CONCRETE PRODUCTS

Back Issues from No. 1 to present areavailable at $3.00 each, postpaid.Send check to The Wall Journal,

P.O. Box 1389Lehigh Acres, FL 33970-1 389

There are castlesand there are sound walls.

Faddis Concrete Products 3515 Kings Highway, Downingtown, PA 19335 - Phone (800) 777-7973 - FAX (610)873-8431

The Wall journal jul/Aug 1996 Issue No. 24 21

C.• r

Bowlby & Associates, Inc. 24Nashville, Tennessee

~arsonite International 1 3

Carson City, Nevada

Cur Tec Company 1 5Hazel Crest, Illinois

DURISOL International Corp. 16

I-lamilton, Ontario, Canada

EVERGREEN 18Norcross, Georgia

Faddis Concrete Products 21Downington, Pennsylvania

Fosroc Inc.Georgetown, Kentucky

Industrial Acoustics CoBronx, New York

JTE Inc. 12Lorton, Virginia

Larson•~)avis 20Provo, Utah

Pickett Wall Systems, Inc. 22Hollywood, Florida

The Reinforced Earth Co. 14Vienna, Virginia

SCANTEK Inc. 11,17Silver Spring, Maryland

SOUND FIGHTERShreveport, Louisiana 1 7

SOUNDTRAp 19Austin, Texas

SOUNDZERO 22Birdsboro, Pennsylvania

Structure MountedNoise Walls

• The problem-solvingdesign solution fortransportation officialsand communities.

• Light weight barriersfacilitate unprece-dented convenienceand time efficiency.

ZEROitive in

• Integral safety riggingprotect communitiesand traffic.

~erConstruction

rdsboro, PA 19508

For More InformationCall 1 -800-321-6275

Phone: (215) 385-6797 FAX: (215) 385-7524

PICKETT’S Patented WALLSFirst in DesignSince ‘69

2

IIIL.

1. First free-standing wall with rotatable & vertically adjustable joints - FANWALL2. Capability for three-dimensional designs and textures for concrete block facings3. Atomic power plant radiation shield, 24” thick panels, demountable for

strip-down maintenance4. Universal connector for all vertical rotary joints including full height panels5. Rail transit barrier - low height, noise-absorptive & emergency evacuation

capability for passengers6. Bullet-resistant transparent noise barrier - VU-Wall7. Combined post and shallow depth, free-standing barrier8. Rotary step-joint panel with concealed fastener - HINGEWALL

and NOW:

monowaflTMmonowall One Crane Pass—from DeliveryTruck to Final Wall Position

Integrated post and panel module with rotatable joint —

Design accommodates grades, grade changes, alignment changesModule makes either free-standing or pier supported barriers, OR

Cost effectively can intermix both as site conditions require or permitStackable wide panels or full height monolithic panels

For monowail video, engfueering drawings and recap of Features and Benefits:Pickett Wall Systems,Inc.

4028 North Ocean Drive, Hollywood, Florida 33019 Tel. 954 927-1529

22 The Wall journal jul/Aug 1996 Issue No. 24

The Last WordAs your fearless but benevolent

leader, I believe I have rights to the firstand last words in The journal. There-fore, I have dedicated this space to myparting messages for each issue. TheEditor’s Corner simply does not allotme sufficient space to exercise my vastwriting talent, nor to adequately ventmy spleen when the occasiondemands, as oft occurs.

In this introductory column, therewill be no splenetic comments. RatherI have some complimentary salutationsto you, my favorite readers.

You are probably well aware that allof you are part of a select fraternity andsorority of dedicated professionals,who are engaged in the worthyendeavorof protecting the environmentfrom the impact of air, noise and waterpollution which is ascribed to the trans-portation industry. May you live longand prosper.

However, you are all probablyunaware that you belong to a moreselect segment of that group. The read-ership of The Wall journal has been

O.K. I know that there are hun-dreds, maybe thousands, of readersout there who are right now workingon projects, theories, new productsand technical data which the rest ofour readers would really, really liketolearn about. Please share it with us.

~ \ .~‘~-“~‘ ‘~~ ,.,.~ ~. ~~) ~

The nice thing about being a reg-istered reader of The Wall Journal isthat you can also be a writer. Wewon’t charge you a dime for publish-ing your articles, Look at all thosepeople who got into this issue. And,we have international readership.You will be famous.

Ladies are most welcome. In fact,I harbor a personal preference forthem, Come on in. —Ed.

culled from aninitial mailing of3,000 copies ofthe July/August1992 issue, to1,700 copies ofthis issue. Thatwould seem to bean indication thatwe are in trouble.

Not to worry. We started The Journalwith whatever databases we could getour hands on. We soon discovered thatthere were lots of ‘dearly departeds’,‘no longer heres’, ‘addresseeunknowns’ and other vaporous nameson our lists.

Over the past four years, thanks toour “You MUST Register” policy andthe “Address Correction Requested”notice on the label portion of The jour-nal, and your own cooperation in keep-ing our database current, we have themost accurately targeted mailing list inthe business.

I’m proud to say that our readers arethe real shakers and movers in theworld of transportation related environ-mental issues. Thank you. U

cvA ~ ~ _ir ~~ii ~iw~w~

Reader RegistrationFor Federal,StateandLocal GovernmentOfficials,

GovernmentAssociations,UniversitiesandLibrariesOnly you are entitled to a free subscription to The Wall Journal.

Just provide us with a subscription request on your letterhead and mail it to:

The Wall Journal, P.O. Box 1389, Lehigh Acres, FL 33970-1 389

Please don’t telephone it to us. If you have already registered, just ignore this —

you are safely in our database and will continue to receive The journal..

Reader SubscriptionFor U.S. Consultants, Contractors, Manufacturers,

Equipment Vendors and Others in the Private Sector

Please~ begin! EJ renew my subscription to The Wall Journal.Subscriptions are for a one-year period (six bi-monthly issues)

Single Copy Subscription (USA) Li 1 Year, $20.00Corporate Subscription (5 copies each issue, one address) Li 1 Year, $56.00

Please order your subscription on your letterhead,enclose your check for the appropriate amount, and mail to:

The Wall Journal, P.O. Box 1389, Lehigh Acres, FL 33970-1 389

The Wall journal jul/Aug 1996 Issue No. 24 23

BQWLj3Y~ What you’ve beenwaiting for!

& A5SOCIA t~, INC.

(7~/~I/~iiIThe New Traffic NoiseModeling( Short Course

~s’ This carefully crafted, hands-on course is a must for

What’s new and why you should attend -- current STAMINA and OPTIMA users

* The FHWA ‘s new Traffic Noise Model (TNM) software, to be ‘~ Don’t lose valuable time trying to learn the manyfeatures of this complicated software on your own.phased in over the comi~’ year, will be the required method for

traffic noise analysis and barrier design. ‘~ More importantly, learn the best work flow how to

use TNM’s extensive capabilities to do the job right.* TNM represents an entirely new set of acoustic algorithms fornoise emission, propagation & attenuation, This complex Every student will work at their own high-powered PC,software includes many different features over past models. through group exercises & real~worldcase studies.

* Comments from recent offerings of our “Advanced Traffic ‘~ Taught by Drs, William Bowiby and Roger L. Wayson,with over 40 years combined experience in traffic noise

Noise Modeling” course: analysis and teaching.“My high expectations were all exceeded” Thomas Wholley, VHB, Inc.“Put together extremely well,” Rob Kolmansberger, Skelly & Loy, Inc. ~ Learn with the best. We’ve trained hundreds of“Excellent course, very knowledgeable presenters” Don Good, Fiander-Good engineers & analysts across the U.S., Canada and abroad.

Call us for dates and cost information. Phone: (615)661-5838Fax: (615)661-5918,or check our web page http://www.isdn.net/bowlby

Bowiby & Associates. Inc., Two Maryland Farms, Suite 1 30, Brentwood, Tennessee 37027

SubscriptionsSubscriptions to The Wall journal are free of charge to

federal, state and local government agencies and theirofficials, to government associations, and to universities,provided they have registered in writing by sendingname, department and complete mailing address. Wewould also like to have telephone and fax numbers forour referral records.

Subscriptions for the private sector (e.g.,consultingengineers, contractors, equipment manufacturers andvendors) are available at the costs per year (6 issues)shown below. Please include your check with your sub-scription order.

U.S. Subscribers: $20.00. Please send checks andsubscription orders to The Wall journal, P.O. Box 1389,Lehigh Acres, FL 33970-1 389.

Canadian Subscribers: $29.00 (CDN, including GST).Please make checks and subscription orders payable toCatseye Services, Postal Outlet Box 27001, Etobicoke,Ontario M9W 6L0.

All Others: $33.00 (U.S.). Please send subscriptionorders and drafts payable in U.S. funds through U.S.banks to The Wall journal, P.O. Box 1 389,Lehigh Acres,FL 33970-1 389. Issues will be sent via air mail.

AdvertisingDisplay advertising rates and sizes are contained in our

Advertising Rate Schedule, a copy of which is availableon request sent to The Wall journal, P.O. Box 1389,Lehigh Acres FL 33970-1 389.

24 The Wall journal Jul/Aug 1996 Issue No. 24

the wad journaltm · the wad journaltm the international journal of transportation-related...

Documents